This commit is contained in:
Qyriad 2024-05-07 13:42:34 -06:00
parent 7226aaf7ab
commit e988de0793
1783 changed files with 1 additions and 149220 deletions

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---
BasedOnStyle: LLVM
AccessModifierOffset: -4
AlignAfterOpenBracket: BlockIndent
AlignEscapedNewlines: Left
AlignOperands: DontAlign
AllowShortBlocksOnASingleLine: Always
AllowShortFunctionsOnASingleLine: Empty
AllowShortIfStatementsOnASingleLine: WithoutElse
AlwaysBreakBeforeMultilineStrings: true
AlwaysBreakTemplateDeclarations: Yes
BinPackArguments: false
BinPackParameters: false
BitFieldColonSpacing: None
BraceWrapping:
AfterCaseLabel: false
AfterClass: true
AfterControlStatement: MultiLine
AfterEnum: false
AfterFunction: true
AfterNamespace: false
AfterObjCDeclaration: false
AfterStruct: true
AfterUnion: true
AfterExternBlock: false
BeforeCatch: false
BeforeElse: false
BeforeLambdaBody: false
BeforeWhile: false
IndentBraces: false
SplitEmptyFunction: true
SplitEmptyRecord: false
SplitEmptyNamespace: true
BreakAfterAttributes: Always
BreakBeforeBinaryOperators: NonAssignment
BreakBeforeBraces: Custom
BreakConstructorInitializers: BeforeComma
ColumnLimit: 100
EmptyLineAfterAccessModifier: Leave
EmptyLineBeforeAccessModifier: Leave
FixNamespaceComments: false
IndentWidth: 4
InsertBraces: true
InsertTrailingCommas: Wrapped
LambdaBodyIndentation: Signature
PackConstructorInitializers: CurrentLine
PointerAlignment: Middle
SortIncludes: Never
SpaceAfterCStyleCast: true
SpaceAfterTemplateKeyword: false

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UseColor: true
Checks:
- -*
- bugprone-*
# too many warnings
- -bugprone-assignment-in-if-condition
# too many warnings
- -bugprone-narrowing-conversions
# kind of nonsense
- -bugprone-easily-swappable-parameters
# too many warnings for now
- -bugprone-implicit-widening-of-multiplication-result
# Lix's exception handling is Questionable
- -bugprone-empty-catch
# many warnings
- -bugprone-unchecked-optional-access
# many warnings, seems like a questionable lint
- -bugprone-branch-clone

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((c++-mode . (
(c-file-style . "k&r")
(c-basic-offset . 4)
(c-block-comment-prefix . " ")
(indent-tabs-mode . nil)
(tab-width . 4)
(show-trailing-whitespace . t)
(indicate-empty-lines . t)
(eval . (c-set-offset 'innamespace 0))
(eval . (c-set-offset 'defun-open 0))
(eval . (c-set-offset 'inline-open 0))
(eval . (c-set-offset 'arglist-intro '+))
(eval . (c-set-offset 'arglist-cont 0))
(eval . (c-set-offset 'arglist-cont-nonempty '+))
(eval . (c-set-offset 'substatement-open 0))
(eval . (c-set-offset 'access-label '-))
(eval . (c-set-offset 'inlambda 0))
)))

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# EditorConfig configuration for nix
# http://EditorConfig.org
# Top-most EditorConfig file
root = true
# Unix-style newlines with a newline ending every file, utf-8 charset
[*]
end_of_line = lf
insert_final_newline = true
trim_trailing_whitespace = true
charset = utf-8
# Match nix files, set indent to spaces with width of two
[*.nix]
indent_style = space
indent_size = 2
# Match c++/shell/perl, set indent to spaces with width of four
[*.{hpp,cc,hh,sh,pl}]
indent_style = space
indent_size = 4
# Match diffs, avoid to trim trailing whitespace
[*.{diff,patch}]
trim_trailing_whitespace = false

9
.envrc
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# shellcheck shell=bash
source_env_if_exists .envrc.local
# TODO: `use flake .#native-clangStdenvPackages` on macOS?
use flake ".#${LIX_SHELL_VARIANT:-default}" "${LIX_SHELL_EXTRA_ARGS[@]}"
export MAKEFLAGS="$MAKEFLAGS -e"
if [[ -n "$NIX_BUILD_CORES" ]]; then
export MAKEFLAGS="$MAKEFLAGS -j $NIX_BUILD_CORES"
fi
export GTEST_BRIEF=1

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.github/CODEOWNERS vendored
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# Pull requests concerning the listed files will automatically invite the respective maintainers as reviewers.
# This file is not used for denoting any kind of ownership, but is merely a tool for handling notifications.
#
# Merge permissions are required for maintaining an entry in this file.
# For documentation on this mechanism, see https://help.github.com/articles/about-codeowners/
# Default reviewers if nothing else matches
* @edolstra
# This file
.github/CODEOWNERS @edolstra
# Public documentation
/doc @fricklerhandwerk
*.md @fricklerhandwerk
# Libstore layer
/src/libstore @thufschmitt

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---
name: Bug report
about: Create a report to help us improve
title: ''
labels: bug
assignees: ''
---
## Describe the bug
A clear and concise description of what the bug is.
If you have a problem with a specific package or NixOS,
you probably want to file an issue at https://github.com/NixOS/nixpkgs/issues.
## Steps To Reproduce
1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error
## Expected behavior
A clear and concise description of what you expected to happen.
## `nix --version` output
## Additional context
Add any other context about the problem here.

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---
name: Feature request
about: Suggest an idea for this project
title: ''
labels: feature
assignees: ''
---
## Is your feature request related to a problem? Please describe.
A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
## Describe the solution you'd like
A clear and concise description of what you want to happen.
## Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.
## Additional context
Add any other context or screenshots about the feature request here.

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@ -1,32 +0,0 @@
---
name: Installer issue
about: Report problems with installation
title: ''
labels: installer
assignees: ''
---
## Platform
<!-- select the platform on which you tried to install Nix -->
- [ ] Linux: <!-- state your distribution, e.g. Arch Linux, Ubuntu, ... -->
- [ ] macOS
- [ ] WSL
## Additional information
<!-- state special circumstances on your system or additional steps you have taken prior to installation -->
## Output
<details><summary>Output</summary>
```log
<!-- paste console output here and remove this comment -->
```
</details>

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---
name: Missing or incorrect documentation
about: Help us improve the reference manual
title: ''
labels: documentation
assignees: ''
---
## Problem
<!-- describe your problem -->
## Proposal
<!-- propose a solution -->
## Checklist
<!-- make sure this issue is not redundant or obsolete -->
- [ ] checked [latest Nix manual] \([source])
- [ ] checked [open documentation issues and pull requests] for possible duplicates
[latest Nix manual]: https://nixos.org/manual/nix/unstable/
[source]: https://github.com/NixOS/nix/tree/master/doc/manual/src
[open documentation issues and pull requests]: https://github.com/NixOS/nix/labels/documentation

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# Motivation
<!-- Briefly explain what the change is about and why it is desirable. -->
# Context
<!-- Provide context. Reference open issues if available. -->
<!-- Non-trivial change: Briefly outline the implementation strategy. -->
<!-- Invasive change: Discuss alternative designs or approaches you considered. -->
<!-- Large change: Provide instructions to reviewers how to read the diff. -->

35
.github/STALE-BOT.md vendored
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# Stale bot information
- Thanks for your contribution!
- To remove the stale label, just leave a new comment.
- _How to find the right people to ping?_ &rarr; [`git blame`](https://git-scm.com/docs/git-blame) to the rescue! (or GitHub's history and blame buttons.)
- You can always ask for help on [our Discourse Forum](https://discourse.nixos.org/) or on [Matrix - #nix:nixos.org](https://matrix.to/#/#nix:nixos.org).
## Suggestions for PRs
1. GitHub sometimes doesn't notify people who commented / reviewed a PR previously, when you (force) push commits. If you have addressed the reviews you can [officially ask for a review](https://docs.github.com/en/free-pro-team@latest/github/collaborating-with-issues-and-pull-requests/requesting-a-pull-request-review) from those who commented to you or anyone else.
2. If it is unfinished but you plan to finish it, please mark it as a draft.
3. If you don't expect to work on it any time soon, closing it with a short comment may encourage someone else to pick up your work.
4. To get things rolling again, rebase the PR against the target branch and address valid comments.
5. If you need a review to move forward, ask in [the Discourse thread for PRs that need help](https://discourse.nixos.org/t/prs-in-distress/3604).
6. If all you need is a merge, check the git history to find and [request reviews](https://docs.github.com/en/github/collaborating-with-issues-and-pull-requests/requesting-a-pull-request-review) from people who usually merge related contributions.
## Suggestions for issues
1. If it is resolved (either for you personally, or in general), please consider closing it.
2. If this might still be an issue, but you are not interested in promoting its resolution, please consider closing it while encouraging others to take over and reopen an issue if they care enough.
3. If you still have interest in resolving it, try to ping somebody who you believe might have an interest in the topic. Consider discussing the problem in [our Discourse Forum](https://discourse.nixos.org/).
4. As with all open source projects, your best option is to submit a Pull Request that addresses this issue. We :heart: this attitude!
**Memorandum on closing issues**
Don't be afraid to close an issue that holds valuable information. Closed issues stay in the system for people to search, read, cross-reference, or even reopen--nothing is lost! Closing obsolete issues is an important way to help maintainers focus their time and effort.
## Useful GitHub search queries
- [Open PRs with any stale-bot interaction](https://github.com/NixOS/nix/pulls?q=is%3Apr+is%3Aopen+commenter%3Aapp%2Fstale+)
- [Open PRs with any stale-bot interaction and `stale`](https://github.com/NixOS/nix/pulls?q=is%3Apr+is%3Aopen+commenter%3Aapp%2Fstale+label%3A%22stale%22)
- [Open PRs with any stale-bot interaction and NOT `stale`](https://github.com/NixOS/nix/pulls?q=is%3Apr+is%3Aopen+commenter%3Aapp%2Fstale+-label%3A%22stale%22+)
- [Open Issues with any stale-bot interaction](https://github.com/NixOS/nix/issues?q=is%3Aissue+is%3Aopen+commenter%3Aapp%2Fstale+)
- [Open Issues with any stale-bot interaction and `stale`](https://github.com/NixOS/nix/issues?q=is%3Aissue+is%3Aopen+commenter%3Aapp%2Fstale+label%3A%22stale%22+)
- [Open Issues with any stale-bot interaction and NOT `stale`](https://github.com/NixOS/nix/issues?q=is%3Aissue+is%3Aopen+commenter%3Aapp%2Fstale+-label%3A%22stale%22+)

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version: 2
updates:
- package-ecosystem: "github-actions"
directory: "/"
schedule:
interval: "weekly"

23
.github/labeler.yml vendored
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"documentation":
- doc/manual/*
- src/nix/**/*.md
"store":
- src/libstore/store-api.*
- src/libstore/*-store.*
"fetching":
- src/libfetchers/**/*
"repl":
- src/libcmd/repl.*
- src/nix/repl.*
"new-cli":
- src/nix/**/*
"with-tests":
# Unit tests
- src/*/tests/**/*
# Functional and integration tests
- tests/functional/**/*

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.github/stale.yml vendored
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# Configuration for probot-stale - https://github.com/probot/stale
daysUntilStale: 180
daysUntilClose: false
exemptLabels:
- "critical"
- "never-stale"
staleLabel: "stale"
markComment: false
closeComment: false

159
.gitignore vendored
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Makefile.config
perl/Makefile.config
# /
/aclocal.m4
/autom4te.cache
/precompiled-headers.h.gch
/config.*
/configure
/stamp-h1
/svn-revision
/libtool
/config
# /doc/manual/
/doc/manual/*.1
/doc/manual/*.5
/doc/manual/*.8
/doc/manual/generated/*
/doc/manual/nix.json
/doc/manual/conf-file.json
/doc/manual/language.json
/doc/manual/xp-features.json
/doc/manual/src/command-ref/experimental-features-shortlist.md
/doc/manual/src/contributing/experimental-feature-descriptions.md
/doc/manual/src/release-notes/rl-next-generated.md
# /scripts/
/scripts/nix-profile.sh
/scripts/nix-profile-daemon.sh
/scripts/nix-profile.fish
/scripts/nix-profile-daemon.fish
# /src/libexpr/
/src/libexpr/lexer-tab.cc
/src/libexpr/lexer-tab.hh
/src/libexpr/parser-tab.cc
/src/libexpr/parser-tab.hh
/src/libexpr/parser-tab.output
/src/libexpr/nix.tbl
/src/libexpr/tests
/tests/unit/libexpr/libnixexpr-tests
# /src/libstore/
*.gen.*
/src/libstore/tests
/tests/unit/libstore/libnixstore-tests
# /src/libutil/
/src/libutil/tests
/tests/unit/libutil/libnixutil-tests
/src/nix/nix
/src/nix/doc
# /src/nix-env/
/src/nix-env/nix-env
# /src/nix-instantiate/
/src/nix-instantiate/nix-instantiate
# /src/nix-store/
/src/nix-store/nix-store
/src/nix-prefetch-url/nix-prefetch-url
/src/nix-collect-garbage/nix-collect-garbage
# /src/nix-channel/
/src/nix-channel/nix-channel
# /src/nix-build/
/src/nix-build/nix-build
/src/nix-copy-closure/nix-copy-closure
/src/error-demo/error-demo
/src/build-remote/build-remote
# /tests/functional/
/tests/functional/test-tmp
/tests/functional/common/vars-and-functions.sh
/tests/functional/result*
/tests/functional/restricted-innocent
/tests/functional/shell
/tests/functional/shell.drv
/tests/functional/config.nix
/tests/functional/ca/config.nix
/tests/functional/dyn-drv/config.nix
/tests/functional/repl-result-out
/tests/functional/debugger-test-out
/tests/functional/test-libstoreconsumer/test-libstoreconsumer
# /tests/functional/lang/
/tests/functional/lang/*.out
/tests/functional/lang/*.out.xml
/tests/functional/lang/*.err
/tests/functional/lang/*.ast
/perl/lib/Nix/Config.pm
/perl/lib/Nix/Store.cc
/misc/systemd/nix-daemon.service
/misc/systemd/nix-daemon.socket
/misc/systemd/nix-daemon.conf
/misc/upstart/nix-daemon.conf
/src/resolve-system-dependencies/resolve-system-dependencies
outputs/
*.a
*.o
*.o.tmp
*.so
*.dylib
*.dll
*.exe
*.dep
*~
*.pc
*.plist
# GNU Global
GPATH
GRTAGS
GSYMS
GTAGS
# ccls
/.ccls-cache
# auto-generated compilation database
compile_commands.json
nix-rust/target
result
result-*
.vscode/
.direnv/
.envrc.local
# clangd and possibly more
.cache/
# Mac OS
.DS_Store
# ClangBuildAnalyzer output, see maintainers/buildtime_report.sh
buildtime.bin
.envrc.local
# We generate this with a Nix shell hook
/.pre-commit-config.yaml
/.nocontribmsg

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2.90.0

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# Contributing to Lix
Welcome and thank you for considering contributing to Lix! We're currently in a soft release phase, and your support means a lot to us.
To ensure a smooth and effective contribution process, here is a summary of our guidelines:
## Getting help?
If you have any question regarding getting started or reporting bugs, feel free
to reach out to us.
On Matrix, we have a space at `#space:lix.systems`, composed of:
- [`#discuss:lix.systems`](https://matrix.to/#/#discuss:lix.systems) for discussions on Lix.
- [`#dev:lix.systems`](https://matrix.to/#/#dev:lix.systems) for the development channel on Lix.
## Report a bug
- Check if your bug has already been reported in the [issue tracker](https://git.lix.systems/lix-project/lix/issues).
- If you can't find the bug or feature, please open a new issue.
We maintain a copy of the upstream Nix bugs. Their organisation can be read about [here](https://wiki.lix.systems/books/lix-contributors/page/bug-tracker-organisation).
## Report a security vulnerability
For security vulnerabilities, reach out by email at `security at lix dot systems`.
## Making changes to Lix
Before diving into making changes, we want to engage with you and your ideas.
We have a few policies in effect; please take the time to familiarize yourself:
- [Style guide on code](https://wiki.lix.systems/books/lix-contributors/page/code)
- [Freeze policy and recommended contributions](https://wiki.lix.systems/books/lix-contributors/page/freezes-and-recommended-contributions)
To avoid duplication of effort, it may be a good idea to check out the list of
[pending pull requests](https://gerrit.lix.systems/q/status:open+-is:wip) (or "change lists", as Gerrit calls them). Once you have
an idea of what you might want to do, we recommend dropping a message on our
Matrix to ensure your contribution fits with our current schedule and plans
When you're ready and your changes are ready to go:
- Submit your code.
- Submitting a GitHub PR [on our mirror](https://github.com/lix-project/lix) is totally ok if that's easier for you and your change is relatively small (300 lines or so).
We may ask you to resubmit it as a Gerrit CL if it is necessary for the change you're making.
- Our primary code review system is [our Gerrit instance](https://gerrit.lix.systems), where you can open a change list (CL).
If you're new to Gerrit, check out [our wiki page about Gerrit](https://wiki.lix.systems/books/lix-contributors/page/gerrit).
- Make sure to link any related issues.
- If needed, indicate that the change is 'work in progress'.
You can obtain an account on our platforms by clicking "Sign In with GitHub" on the sign-in page.

502
COPYING
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GNU LESSER GENERAL PUBLIC LICENSE
Version 2.1, February 1999
Copyright (C) 1991, 1999 Free Software Foundation, Inc.
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
[This is the first released version of the Lesser GPL. It also counts
as the successor of the GNU Library Public License, version 2, hence
the version number 2.1.]
Preamble
The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU General Public
Licenses are intended to guarantee your freedom to share and change
free software--to make sure the software is free for all its users.
This license, the Lesser General Public License, applies to some
specially designated software packages--typically libraries--of the
Free Software Foundation and other authors who decide to use it. You
can use it too, but we suggest you first think carefully about whether
this license or the ordinary General Public License is the better
strategy to use in any particular case, based on the explanations below.
When we speak of free software, we are referring to freedom of use,
not price. Our General Public Licenses are designed to make sure that
you have the freedom to distribute copies of free software (and charge
for this service if you wish); that you receive source code or can get
it if you want it; that you can change the software and use pieces of
it in new free programs; and that you are informed that you can do
these things.
To protect your rights, we need to make restrictions that forbid
distributors to deny you these rights or to ask you to surrender these
rights. These restrictions translate to certain responsibilities for
you if you distribute copies of the library or if you modify it.
For example, if you distribute copies of the library, whether gratis
or for a fee, you must give the recipients all the rights that we gave
you. You must make sure that they, too, receive or can get the source
code. If you link other code with the library, you must provide
complete object files to the recipients, so that they can relink them
with the library after making changes to the library and recompiling
it. And you must show them these terms so they know their rights.
We protect your rights with a two-step method: (1) we copyright the
library, and (2) we offer you this license, which gives you legal
permission to copy, distribute and/or modify the library.
To protect each distributor, we want to make it very clear that
there is no warranty for the free library. Also, if the library is
modified by someone else and passed on, the recipients should know
that what they have is not the original version, so that the original
author's reputation will not be affected by problems that might be
introduced by others.
Finally, software patents pose a constant threat to the existence of
any free program. We wish to make sure that a company cannot
effectively restrict the users of a free program by obtaining a
restrictive license from a patent holder. Therefore, we insist that
any patent license obtained for a version of the library must be
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Most GNU software, including some libraries, is covered by the
ordinary GNU General Public License. This license, the GNU Lesser
General Public License, applies to certain designated libraries, and
is quite different from the ordinary General Public License. We use
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When a program is linked with a library, whether statically or using
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General Public License therefore permits such linking only if the
entire combination fits its criteria of freedom. The Lesser General
Public License permits more lax criteria for linking other code with
the library.
We call this license the "Lesser" General Public License because it
does Less to protect the user's freedom than the ordinary General
Public License. It also provides other free software developers Less
of an advantage over competing non-free programs. These disadvantages
are the reason we use the ordinary General Public License for many
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For example, on rare occasions, there may be a special need to
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allowed to use the library. A more frequent case is that a free
library does the same job as widely used non-free libraries. In this
case, there is little to gain by limiting the free library to free
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In other cases, permission to use a particular library in non-free
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free software. For example, permission to use the GNU C Library in
non-free programs enables many more people to use the whole GNU
operating system, as well as its variant, the GNU/Linux operating
system.
Although the Lesser General Public License is Less protective of the
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linked with the Library has the freedom and the wherewithal to run
that program using a modified version of the Library.
The precise terms and conditions for copying, distribution and
modification follow. Pay close attention to the difference between a
"work based on the library" and a "work that uses the library". The
former contains code derived from the library, whereas the latter must
be combined with the library in order to run.
GNU LESSER GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License Agreement applies to any software library or other
program which contains a notice placed by the copyright holder or
other authorized party saying it may be distributed under the terms of
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Each licensee is addressed as "you".
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and what the program that uses the Library does.
1. You may copy and distribute verbatim copies of the Library's
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You may charge a fee for the physical act of transferring a copy,
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above, provided that you also meet all of these conditions:
a) The modified work must itself be a software library.
b) You must cause the files modified to carry prominent notices
stating that you changed the files and the date of any change.
c) You must cause the whole of the work to be licensed at no
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d) If a facility in the modified Library refers to a function or a
table of data to be supplied by an application program that uses
the facility, other than as an argument passed when the facility
is invoked, then you must make a good faith effort to ensure that,
in the event an application does not supply such function or
table, the facility still operates, and performs whatever part of
its purpose remains meaningful.
(For example, a function in a library to compute square roots has
a purpose that is entirely well-defined independent of the
application. Therefore, Subsection 2d requires that any
application-supplied function or table used by this function must
be optional: if the application does not supply it, the square
root function must still compute square roots.)
These requirements apply to the modified work as a whole. If
identifiable sections of that work are not derived from the Library,
and can be reasonably considered independent and separate works in
themselves, then this License, and its terms, do not apply to those
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distribute the same sections as part of a whole which is a work based
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Copyright (C) <year> <name of author>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
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Also add information on how to contact you by electronic and paper mail.
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necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the
library `Frob' (a library for tweaking knobs) written by James Random Hacker.
<signature of Ty Coon>, 1 April 1990
Ty Coon, President of Vice
That's all there is to it!

View file

@ -1,29 +0,0 @@
# Lix
**Lix** is an implementation of **Nix**, a powerful package management system for Linux and other Unix systems that makes package management reliable and reproducible.
Read more about us at https://lix.systems.
## Installation
On Linux and macOS the easiest way to install Nix is to run the following shell command
(as a user other than root):
```console
$ curl -sSf -L https://install.lix.systems/lix | sh -s -- install
```
For systems that **already have Nix installed**, such as NixOS systems, read our [install page](https://lix.systems/install)
## Building And Developing
See our [Hacking guide](https://git.lix.systems/lix-project/lix/src/branch/main/doc/manual/src/contributing/hacking.md) in our manual for instruction on how to to set up a development environment and build Lix from source.
## Additional Resources
- [Our wiki](https://wiki.lix.systems)
- [Matrix - #space:lix.systems](https://matrix.to/#/#space:lix.systems)
## License
Lix is released under the [LGPL v2.1](./COPYING).

3
bench/.gitignore vendored
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@ -1,3 +0,0 @@
bench-*.json
bench-*.md
nixpkgs

View file

@ -1,91 +0,0 @@
# Benchmarking scripts for Lix
These are very much WIP, and have a few clumsy assumptions that we would
somewhat rather be fixed, but we have committed them to let others be able to
do benchmarking in the mean time.
## Benchmarking procedure
Build some Lixes you want to compare, by whichever means you wish.
Get a computer that is not busy and *strongly preferably* is bare-metal or at
least not a cloud VM (e.g. go make coffee when running benchmarks).
From the root of a Lix checkout, run `./bench/bench.sh resultlink-one
resultlink-two`, where `resultlink-one` and `resultlink-two` are the result
links from the builds you want to test (they can be any directory with bin/nix
in it, however).
To get the summary again, run `./bench/summarize.jq bench/bench-*.json`.
## Example results
(vim tip: `:r !bench/summarize.jq bench/bench-*.json` to dump it directly into
your editor)
```
result-asserts/bin/nix --extra-experimental-features 'nix-command flakes' search --no-eval-cache github:nixos/nixpkgs/e1fa12d4f6
c6fe19ccb59cac54b5b3f25e160870 hello
mean: 15.993s ± 0.081s
user: 13.321s | system: 1.865s
median: 15.994s
range: 15.829s ... 16.096s
relative: 1
result/bin/nix --extra-experimental-features 'nix-command flakes' search --no-eval-cache github:nixos/nixpkgs/e1fa12d4f6c6fe19cc
b59cac54b5b3f25e160870 hello
mean: 15.897s ± 0.075s
user: 13.248s | system: 1.843s
median: 15.88s
range: 15.807s ... 16.047s
relative: 0.994
---
result/bin/nix --extra-experimental-features 'nix-command flakes' eval -f bench/nixpkgs/pkgs/development/haskell-modules/hackage-packages.nix
mean: 0.4s ± 0.024s
user: 0.335s | system: 0.046s
median: 0.386s
range: 0.379s ... 0.43s
relative: 1
result-asserts/bin/nix --extra-experimental-features 'nix-command flakes' eval -f bench/nixpkgs/pkgs/development/haskell-modules/hackage-packages.nix
mean: 0.404s ± 0.024s
user: 0.338s | system: 0.046s
median: 0.386s
range: 0.384s ... 0.436s
relative: 1.008
---
result-asserts/bin/nix --extra-experimental-features 'nix-command flakes' eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'
mean: 5.838s ± 0.023s
user: 5.083s | system: 0.464s
median: 5.845s
range: 5.799s ... 5.867s
relative: 1
result/bin/nix --extra-experimental-features 'nix-command flakes' eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'
mean: 5.788s ± 0.044s
user: 5.056s | system: 0.439s
median: 5.79s
range: 5.715s ... 5.876s
relative: 0.991
---
GC_INITIAL_HEAP_SIZE=10g result-asserts/bin/nix eval --extra-experimental-features 'nix-command flakes' --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'
mean: 4.147s ± 0.021s
user: 3.457s | system: 0.487s
median: 4.147s
range: 4.123s ... 4.195s
relative: 1
GC_INITIAL_HEAP_SIZE=10g result/bin/nix eval --extra-experimental-features 'nix-command flakes' --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'
mean: 4.149s ± 0.027s
user: 3.483s | system: 0.456s
median: 4.142s
range: 4.126s ... 4.215s
relative: 1
---
```

View file

@ -1,62 +0,0 @@
#!/usr/bin/env bash
set -euo pipefail
shopt -s inherit_errexit
scriptdir=$(cd "$(dirname -- "$0")" ; pwd -P)
cd "$scriptdir/.."
if [[ $# -lt 2 ]]; then
# FIXME(jade): it is a reasonable use case to want to run a benchmark run
# on just one build. However, since we are using hyperfine in comparison
# mode, we would have to combine the JSON ourselves to support that, which
# would probably be better done by writing a benchmarking script in
# not-bash.
echo "Fewer than two result dirs given, nothing to compare!" >&2
echo "Pass some directories (with names indicating which alternative they are) with bin/nix in them" >&2
echo "Usage: ./bench/bench.sh result-1 result-2 [result-3...]" >&2
exit 1
fi
_exit=""
trap "$_exit" EXIT
# XXX: yes this is very silly. flakes~!!
nix build --impure --expr '(builtins.getFlake "git+file:.").inputs.nixpkgs.outPath' -o bench/nixpkgs
export NIX_REMOTE="$(mktemp -d)"
_exit='rm -rfv "$NIX_REMOTE"; $_exit'
export NIX_PATH="nixpkgs=bench/nixpkgs:nixos-config=bench/configuration.nix"
builds=("$@")
flake_args="--extra-experimental-features 'nix-command flakes'"
hyperfineArgs=(
--parameter-list BUILD "$(IFS=,; echo "${builds[*]}")"
--warmup 2 --runs 10
)
declare -A cases
cases=(
[search]="{BUILD}/bin/nix $flake_args search --no-eval-cache github:nixos/nixpkgs/e1fa12d4f6c6fe19ccb59cac54b5b3f25e160870 hello"
[rebuild]="{BUILD}/bin/nix $flake_args eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'"
[rebuild-lh]="GC_INITIAL_HEAP_SIZE=10g {BUILD}/bin/nix eval $flake_args --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'"
[parse]="{BUILD}/bin/nix $flake_args eval -f bench/nixpkgs/pkgs/development/haskell-modules/hackage-packages.nix"
)
benches=(
rebuild
rebuild-lh
search
parse
)
for k in "${benches[@]}"; do
taskset -c 2,3 \
chrt -f 50 \
hyperfine "${hyperfineArgs[@]}" --export-json="bench/bench-${k}.json" --export-markdown="bench/bench-${k}.md" "${cases[$k]}"
done
echo "Benchmarks summary (from ./bench/summarize.jq bench/bench-*.json)"
bench/summarize.jq bench/*.json

View file

@ -1,325 +0,0 @@
{
config,
pkgs,
lib,
...
}:
{
boot = {
initrd = {
availableKernelModules = [
"xhci_pci"
"ahci"
];
kernelModules = [ "dm-snapshot" ];
luks.devices = {
croot = {
device = "/dev/sdb";
allowDiscards = true;
};
};
};
kernelModules = [ "kvm-intel" ];
kernelPackages = pkgs.linuxPackages_latest;
loader = {
systemd-boot.enable = true;
efi.canTouchEfiVariables = true;
};
};
hardware = {
enableRedistributableFirmware = true;
cpu.intel.updateMicrocode = true;
opengl.driSupport32Bit = true;
opengl.extraPackages = with pkgs; [
vaapiIntel
intel-media-driver
intel-compute-runtime
];
};
fileSystems = {
"/" = {
device = "/dev/sda2";
fsType = "xfs";
options = [ "noatime" ];
};
"/boot" = {
device = "/dev/sda1";
fsType = "vfat";
};
"/nas" = {
device = "nas:/";
fsType = "nfs4";
options = [
"ro"
"x-systemd.automount"
];
};
};
swapDevices = [ { device = "/dev/swap"; } ];
networking = {
useDHCP = false;
hostName = "host";
wireless = {
enable = true;
interfaces = [ "eth1" ];
};
interfaces = {
eth0.useDHCP = true;
eth1.useDHCP = true;
};
wg-quick.interfaces = {
wg0 = {
address = [ "2001:db8::1" ];
privateKeyFile = "/etc/secrets/wg0.key";
peers = [
{
publicKey = "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=";
endpoint = "[2001:db8::2]:61021";
allowedIPs = [ "2001::db8:1::/64" ];
}
];
};
};
firewall.allowedUDPPorts = [ 4567 ];
};
i18n = {
defaultLocale = "en_US.UTF-8";
inputMethod.enabled = "ibus";
};
services = {
xserver = {
enable = true;
layout = "us";
xkbVariant = "altgr-intl";
xkbOptions = "ctrl:nocaps";
libinput.enable = true;
wacom.enable = true;
videoDrivers = [ "modesetting" ];
modules = [ pkgs.xf86_input_wacom ];
displayManager.sx.enable = true;
windowManager.i3.enable = true;
};
udev.extraHwdb = ''
# not like this mattered at all
# we're not running udev from here
'';
udev.extraRules = ''
# ACTION=="add", SUBSYSTEM=="input", ...
'';
};
sound.enable = true;
hardware.pulseaudio = {
enable = true;
package = pkgs.pulseaudioFull;
daemon.config = {
lock-memory = "yes";
realtime-scheduling = "yes";
rlimit-rtprio = "-1";
};
};
programs = {
light.enable = true;
wireshark = {
enable = true;
package = pkgs.wireshark-qt;
};
gnupg.agent = {
enable = true;
};
};
fonts.packages = with pkgs; [
font-awesome
noto-fonts
noto-fonts-cjk
noto-fonts-emoji
noto-fonts-extra
dejavu_fonts
powerline-fonts
source-code-pro
cantarell-fonts
];
users = {
mutableUsers = false;
users = {
user = {
isNormalUser = true;
group = "user";
extraGroups = [
"wheel"
"video"
"audio"
"dialout"
"users"
"kvm"
"wireshark"
];
password = "unimportant";
};
};
groups = {
user = { };
};
};
security = {
pam.loginLimits = [
{
domain = "@audio";
item = "memlock";
type = "-";
value = "unlimited";
}
{
domain = "@audio";
item = "rtprio";
type = "-";
value = "99";
}
{
domain = "@audio";
item = "nofile";
type = "soft";
value = "99999";
}
{
domain = "@audio";
item = "nofile";
type = "hard";
value = "99999";
}
];
sudo.extraRules = [
{
users = [ "user" ];
commands = [
{
command = "${pkgs.linuxPackages.cpupower}/bin/cpupower";
options = [ "NOPASSWD" ];
}
];
}
];
};
environment.systemPackages = with pkgs; [
a2jmidid
age
ardour
bemenu
blender
breeze-icons
breeze-qt5
bubblewrap
calf
claws-mail
darktable
duperemove
emacs
feh
file
firefox
fluidsynth
gnome3.adwaita-icon-theme
gnuplot
graphviz
helm
i3status-rust
inkscape
jack2
jq
krita
ldns
libqalculate
libreoffice
man-pages
nheko
nix-diff
nix-index
nix-output-monitor
open-music-kontrollers.patchmatrix
pamixer
pavucontrol
pciutils
picom
pwgen
redshift
ripgrep
rlwrap
silver-searcher
soundfont-fluid
whois
wol
xclip
xdot
xdotool
xorg.xkbcomp
yt-dlp
zathura
borgbackup
linuxPackages.cpupower
mtr
kitty
xf86_input_wacom
];
environment.pathsToLink = [ "/share/soundfonts" ];
systemd.user.services.run-python = {
after = [ "network-online.target" ];
script = ''
exec ${pkgs.python3}/bin/python
'';
serviceConfig = {
CapabilityBoundingSet = [ "" ];
KeyringMode = "private";
LockPersonality = true;
MemoryDenyWriteExecute = true;
NoNewPrivileges = true;
PrivateDevices = true;
PrivateTmp = true;
PrivateUsers = true;
ProcSubset = "pid";
ProtectClock = true;
ProtectControlGroups = true;
ProtectHome = true;
ProtectHostname = true;
ProtectKernelLogs = true;
ProtectKernelModules = true;
ProtectKernelTunables = true;
ProtectProc = "invisible";
ProtectSystem = "strict";
RestrictAddressFamilies = "AF_INET AF_INET6";
RestrictNamespaces = true;
RestrictRealtime = true;
RestrictSUIDSGID = true;
SystemCallArchitectures = "native";
SystemCallFilter = [
"@system-service"
"~ @resources @privileged"
];
UMask = "077";
};
};
system.stateVersion = "23.11";
}

View file

@ -1,22 +0,0 @@
#!/usr/bin/env -S jq -Mrf
def round3:
. * 1000 | round | . / 1000
;
def stats($first):
[
" mean: \(.mean | round3)s ± \(.stddev | round3)s",
" user: \(.user | round3)s | system: \(.system | round3)s",
" median: \(.median | round3)s",
" range: \(.min | round3)s ... \(.max | round3)s",
" relative: \(.mean / $first.mean | round3)"
]
| join("\n")
;
def fmt($first):
"\(.command)\n" + (. | stats($first))
;
[.results | .[0] as $first | .[] | fmt($first)] | join("\n\n") | (. + "\n\n---\n")

View file

@ -1,99 +0,0 @@
diff --git a/darwin_stop_world.c b/darwin_stop_world.c
index 0468aaec..b348d869 100644
--- a/darwin_stop_world.c
+++ b/darwin_stop_world.c
@@ -356,6 +356,7 @@ GC_INNER void GC_push_all_stacks(void)
int nthreads = 0;
word total_size = 0;
mach_msg_type_number_t listcount = (mach_msg_type_number_t)THREAD_TABLE_SZ;
+ size_t stack_limit;
if (!EXPECT(GC_thr_initialized, TRUE))
GC_thr_init();
@@ -411,6 +412,19 @@ GC_INNER void GC_push_all_stacks(void)
GC_push_all_stack_sections(lo, hi, p->traced_stack_sect);
}
if (altstack_lo) {
+ // When a thread goes into a coroutine, we lose its original sp until
+ // control flow returns to the thread.
+ // While in the coroutine, the sp points outside the thread stack,
+ // so we can detect this and push the entire thread stack instead,
+ // as an approximation.
+ // We assume that the coroutine has similarly added its entire stack.
+ // This could be made accurate by cooperating with the application
+ // via new functions and/or callbacks.
+ stack_limit = pthread_get_stacksize_np(p->id);
+ if (altstack_lo >= altstack_hi || altstack_lo < altstack_hi - stack_limit) { // sp outside stack
+ altstack_lo = altstack_hi - stack_limit;
+ }
+
total_size += altstack_hi - altstack_lo;
GC_push_all_stack(altstack_lo, altstack_hi);
}
diff --git a/include/gc.h b/include/gc.h
index edab6c22..f2c61282 100644
--- a/include/gc.h
+++ b/include/gc.h
@@ -2172,6 +2172,11 @@ GC_API void GC_CALL GC_win32_free_heap(void);
(*GC_amiga_allocwrapper_do)(a,GC_malloc_atomic_ignore_off_page)
#endif /* _AMIGA && !GC_AMIGA_MAKINGLIB */
+#if !__APPLE__
+/* Patch doesn't work on apple */
+#define NIX_BOEHM_PATCH_VERSION 1
+#endif
+
#ifdef __cplusplus
} /* extern "C" */
#endif
diff --git a/pthread_stop_world.c b/pthread_stop_world.c
index b5d71e62..aed7b0bf 100644
--- a/pthread_stop_world.c
+++ b/pthread_stop_world.c
@@ -768,6 +768,8 @@ STATIC void GC_restart_handler(int sig)
/* world is stopped. Should not fail if it isn't. */
GC_INNER void GC_push_all_stacks(void)
{
+ size_t stack_limit;
+ pthread_attr_t pattr;
GC_bool found_me = FALSE;
size_t nthreads = 0;
int i;
@@ -851,6 +853,37 @@ GC_INNER void GC_push_all_stacks(void)
hi = p->altstack + p->altstack_size;
/* FIXME: Need to scan the normal stack too, but how ? */
/* FIXME: Assume stack grows down */
+ } else {
+#ifdef HAVE_PTHREAD_ATTR_GET_NP
+ if (!pthread_attr_init(&pattr)
+ || !pthread_attr_get_np(p->id, &pattr))
+#else /* HAVE_PTHREAD_GETATTR_NP */
+ if (pthread_getattr_np(p->id, &pattr))
+#endif
+ {
+ ABORT("GC_push_all_stacks: pthread_getattr_np failed!");
+ }
+ if (pthread_attr_getstacksize(&pattr, &stack_limit)) {
+ ABORT("GC_push_all_stacks: pthread_attr_getstacksize failed!");
+ }
+ if (pthread_attr_destroy(&pattr)) {
+ ABORT("GC_push_all_stacks: pthread_attr_destroy failed!");
+ }
+ // When a thread goes into a coroutine, we lose its original sp until
+ // control flow returns to the thread.
+ // While in the coroutine, the sp points outside the thread stack,
+ // so we can detect this and push the entire thread stack instead,
+ // as an approximation.
+ // We assume that the coroutine has similarly added its entire stack.
+ // This could be made accurate by cooperating with the application
+ // via new functions and/or callbacks.
+ #ifndef STACK_GROWS_UP
+ if (lo >= hi || lo < hi - stack_limit) { // sp outside stack
+ lo = hi - stack_limit;
+ }
+ #else
+ #error "STACK_GROWS_UP not supported in boost_coroutine2 (as of june 2021), so we don't support it in Nix."
+ #endif
}
GC_push_all_stack_sections(lo, hi, traced_stack_sect);
# ifdef STACK_GROWS_UP

View file

@ -1,12 +0,0 @@
diff --git a/include/gc_allocator.h b/include/gc_allocator.h
index 597c7f13..587286be 100644
--- a/include/gc_allocator.h
+++ b/include/gc_allocator.h
@@ -312,6 +312,7 @@ public:
template<>
class traceable_allocator<void> {
+public:
typedef size_t size_type;
typedef ptrdiff_t difference_type;
typedef void* pointer;

View file

@ -1 +0,0 @@
BasedOnStyle: llvm

View file

@ -1,4 +0,0 @@
# LLVM style code is 2-space indented
[*.{cc,hh}]
indent_style = space
indent_size = 2

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@ -1,81 +0,0 @@
#include "FixIncludes.hh"
#include <clang-tidy/ClangTidyCheck.h>
#include <clang/Basic/Diagnostic.h>
#include <clang/Basic/SourceManager.h>
#include <clang/Lex/PPCallbacks.h>
#include <clang/Lex/Preprocessor.h>
#include <llvm/ADT/StringRef.h>
#include <llvm/Support/Debug.h>
#include <memory>
#include <set>
#include <string>
namespace nix::clang_tidy {
using namespace clang;
using namespace clang::tidy;
class FixIncludesCallbacks : public PPCallbacks {
public:
ClangTidyCheck &Check;
Preprocessor &PP;
FixIncludesCallbacks(ClangTidyCheck &Check, Preprocessor &PP)
: Check(Check), PP(PP) {}
private:
bool Ignore = false;
virtual void LexedFileChanged(FileID FID, LexedFileChangeReason Reason,
SrcMgr::CharacteristicKind FileType,
FileID PrevFID, SourceLocation Loc) override;
virtual void InclusionDirective(SourceLocation HashLoc,
const Token &IncludeTok, StringRef FileName,
bool IsAngled, CharSourceRange FilenameRange,
OptionalFileEntryRef File,
StringRef SearchPath, StringRef RelativePath,
const Module *Imported,
SrcMgr::CharacteristicKind FileType) override;
};
void FixIncludesCallbacks::LexedFileChanged(FileID, LexedFileChangeReason,
SrcMgr::CharacteristicKind FileType,
FileID, SourceLocation) {
Ignore = FileType != SrcMgr::C_User;
}
void FixIncludesCallbacks::InclusionDirective(
SourceLocation, const Token &, StringRef, bool,
CharSourceRange FilenameRange, OptionalFileEntryRef File, StringRef,
StringRef, const Module *, SrcMgr::CharacteristicKind) {
if (Ignore)
return;
// FIXME: this is kinda evil, but this is a one-time fixup
const std::string SourceDir = "src/";
if (File && File->getNameAsRequested().contains(SourceDir)) {
StringRef Name = File->getNameAsRequested();
auto Idx = Name.find(SourceDir);
assert(Idx != std::string::npos);
StringRef Suffix = Name.drop_front(Idx + SourceDir.length());
if (!Suffix.starts_with("lib")) {
llvm::dbgs() << "ignored: " << Suffix << "\n";
return;
}
auto Diag = Check.diag(FilenameRange.getBegin(),
"include needs to specify the source subdir");
Diag << FilenameRange
<< FixItHint::CreateReplacement(FilenameRange,
("\"" + Suffix + "\"").str());
}
}
void FixIncludesCheck::registerPPCallbacks(const SourceManager &,
Preprocessor *PP, Preprocessor *) {
PP->addPPCallbacks(std::make_unique<FixIncludesCallbacks>(*this, *PP));
}
}; // namespace nix::clang_tidy

View file

@ -1,21 +0,0 @@
#pragma once
///@file
#include <clang-tidy/ClangTidyCheck.h>
#include <clang/ASTMatchers/ASTMatchFinder.h>
#include <llvm/ADT/StringRef.h>
namespace nix::clang_tidy {
using namespace clang;
using namespace clang::tidy;
class FixIncludesCheck : public ClangTidyCheck {
public:
FixIncludesCheck(StringRef Name, ClangTidyContext *Context)
: ClangTidyCheck(Name, Context) {}
void registerPPCallbacks(const SourceManager &SM, Preprocessor *PP, Preprocessor *ModuleExpanderPP) override;
};
};

View file

@ -1,80 +0,0 @@
#include "HasPrefixSuffix.hh"
#include <clang/AST/ASTTypeTraits.h>
#include <clang/AST/Expr.h>
#include <clang/AST/PrettyPrinter.h>
#include <clang/AST/Type.h>
#include <clang/ASTMatchers/ASTMatchers.h>
#include <clang/Basic/Diagnostic.h>
#include <clang/Frontend/FrontendAction.h>
#include <clang/Frontend/FrontendPluginRegistry.h>
#include <clang/Tooling/Transformer/SourceCode.h>
#include <clang/Tooling/Transformer/SourceCodeBuilders.h>
#include <iostream>
namespace nix::clang_tidy {
using namespace clang::ast_matchers;
using namespace clang;
void HasPrefixSuffixCheck::registerMatchers(ast_matchers::MatchFinder *Finder) {
Finder->addMatcher(
traverse(clang::TK_AsIs,
callExpr(callee(functionDecl(anyOf(hasName("hasPrefix"),
hasName("hasSuffix")))
.bind("callee-decl")),
optionally(hasArgument(
0, cxxConstructExpr(
hasDeclaration(functionDecl(hasParameter(
0, parmVarDecl(hasType(
asString("const char *")))))))
.bind("implicit-cast"))))
.bind("call")),
this);
}
void HasPrefixSuffixCheck::check(
const ast_matchers::MatchFinder::MatchResult &Result) {
const auto *CalleeDecl = Result.Nodes.getNodeAs<FunctionDecl>("callee-decl");
auto FuncName = std::string(CalleeDecl->getName());
std::string NewName;
if (FuncName == "hasPrefix") {
NewName = "starts_with";
} else if (FuncName == "hasSuffix") {
NewName = "ends_with";
} else {
llvm_unreachable("nix-has-prefix: invalid callee");
}
const auto *MatchedDecl = Result.Nodes.getNodeAs<CallExpr>("call");
const auto *ImplicitConvertArg =
Result.Nodes.getNodeAs<CXXConstructExpr>("implicit-cast");
const auto *Lhs = MatchedDecl->getArg(0);
const auto *Rhs = MatchedDecl->getArg(1);
auto Diag = diag(MatchedDecl->getExprLoc(), FuncName + " is deprecated");
std::string Text = "";
// Form possible cast to string_view, or nothing.
if (ImplicitConvertArg) {
Text = "std::string_view(";
Text.append(tooling::getText(*Lhs, *Result.Context));
Text.append(").");
} else {
Text.append(*tooling::buildAccess(*Lhs, *Result.Context));
}
// Call .starts_with.
Text.append(NewName);
Text.push_back('(');
Text.append(tooling::getText(*Rhs, *Result.Context));
Text.push_back(')');
Diag << FixItHint::CreateReplacement(MatchedDecl->getSourceRange(), Text);
// for (const auto *arg : MatchedDecl->arguments()) {
// arg->dumpColor();
// arg->getType().dump();
// }
}
}; // namespace nix::clang_tidy

View file

@ -1,25 +0,0 @@
#pragma once
///@file
/// This is an example of a clang-tidy automated refactoring against the Nix
/// codebase. The refactoring has been completed in
/// https://gerrit.lix.systems/c/lix/+/565 so this code is around as
/// an example.
#include <clang-tidy/ClangTidyCheck.h>
#include <clang/ASTMatchers/ASTMatchFinder.h>
#include <llvm/ADT/StringRef.h>
namespace nix::clang_tidy {
using namespace clang;
using namespace clang::tidy;
using namespace llvm;
class HasPrefixSuffixCheck : public ClangTidyCheck {
public:
HasPrefixSuffixCheck(StringRef Name, ClangTidyContext *Context)
: ClangTidyCheck(Name, Context) {}
void registerMatchers(ast_matchers::MatchFinder *Finder) override;
void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
};
}; // namespace nix::clang_tidy

View file

@ -1,19 +0,0 @@
#include <clang-tidy/ClangTidyModule.h>
#include <clang-tidy/ClangTidyModuleRegistry.h>
#include "FixIncludes.hh"
#include "HasPrefixSuffix.hh"
namespace nix::clang_tidy {
using namespace clang;
using namespace clang::tidy;
class NixClangTidyChecks : public ClangTidyModule {
public:
void addCheckFactories(ClangTidyCheckFactories &CheckFactories) override {
CheckFactories.registerCheck<HasPrefixSuffixCheck>("lix-hasprefixsuffix");
CheckFactories.registerCheck<FixIncludesCheck>("lix-fixincludes");
}
};
static ClangTidyModuleRegistry::Add<NixClangTidyChecks> X("lix-module", "Adds lix specific checks");
};

View file

@ -1,56 +0,0 @@
# Clang tidy lints for Nix
This is a skeleton of a clang-tidy lints library for Nix.
Currently there is one check (which is already obsolete as it has served its
goal and is there as an example), `HasPrefixSuffixCheck`.
## Running fixes/checks
One file:
```
ninja -C build && clang-tidy --checks='-*,nix-*' --load=build/libnix-clang-tidy.so -p ../compile_commands.json --fix ../src/libcmd/installables.cc
```
Several files, in parallel:
```
ninja -C build && run-clang-tidy -checks='-*,nix-*' -load=build/libnix-clang-tidy.so -p .. -fix ../src | tee -a clang-tidy-result
```
## Resources
* https://firefox-source-docs.mozilla.org/code-quality/static-analysis/writing-new/clang-query.html
* https://clang.llvm.org/docs/LibASTMatchersReference.html
* https://devblogs.microsoft.com/cppblog/exploring-clang-tooling-part-3-rewriting-code-with-clang-tidy/
## Developing new checks
Put something like so in `myquery.txt`:
```
set traversal IgnoreUnlessSpelledInSource
# ^ Ignore implicit AST nodes. May need to use AsIs depending on how you are
# working.
set bind-root true
# ^ true unless you use any .bind("foo") commands
set print-matcher true
enable output dump
match callExpr(callee(functionDecl(hasName("hasPrefix"))), optionally(hasArgument( 0, cxxConstructExpr(hasDeclaration(functionDecl(hasParameter(0, parmVarDecl(hasType(asString("const char *"))).bind("meow2"))))))))
```
Then run, e.g. `clang-query --preload hasprefix.query -p compile_commands.json src/libcmd/installables.cc`.
With this you can iterate a query before writing it in C++ and suffering from
C++.
### Tips and tricks for the C++
There is a function `dump()` on many things that will dump to stderr. Also
`llvm::errs()` lets you print to stderr.
When I wrote `HasPrefixSuffixCheck`, I was not really able to figure out how
the structured replacement system was supposed to work. In principle you can
describe the replacement with a nice DSL. Look up the Stencil system in Clang
for details.

View file

@ -1,13 +0,0 @@
project('lix-clang-tidy', ['cpp', 'c'],
version : '0.1',
default_options : ['warning_level=3', 'cpp_std=c++20'])
llvm = dependency('Clang', version: '>= 14', modules: ['libclang'])
sources = files(
'HasPrefixSuffix.cc',
'LixClangTidyChecks.cc',
'FixIncludes.cc',
)
shared_module('lix-clang-tidy', sources,
dependencies: llvm)

View file

@ -1,38 +0,0 @@
#!/usr/bin/env nix-shell
#!nix-shell -i python3 -p python3 --pure
# To be used with `--trace-function-calls` and `flamegraph.pl`.
#
# For example:
#
# nix-instantiate --trace-function-calls '<nixpkgs>' -A hello 2> nix-function-calls.trace
# ./contrib/stack-collapse.py nix-function-calls.trace > nix-function-calls.folded
# nix-shell -p flamegraph --run "flamegraph.pl nix-function-calls.folded > nix-function-calls.svg"
import sys
from pprint import pprint
import fileinput
stack = []
timestack = []
for line in fileinput.input():
components = line.strip().split(" ", 2)
if components[0] != "function-trace":
continue
direction = components[1]
components = components[2].rsplit(" ", 2)
loc = components[0]
_at = components[1]
time = int(components[2])
if direction == "entered":
stack.append(loc)
timestack.append(time)
elif direction == "exited":
dur = time - timestack.pop()
vst = ";".join(stack)
print(f"{vst} {dur}")
stack.pop()

View file

@ -1,9 +0,0 @@
(import (
let
lock = builtins.fromJSON (builtins.readFile ./flake.lock);
in
fetchTarball {
url = "https://github.com/edolstra/flake-compat/archive/${lock.nodes.flake-compat.locked.rev}.tar.gz";
sha256 = lock.nodes.flake-compat.locked.narHash;
}
) { src = ./.; }).defaultNix

View file

@ -1,3 +0,0 @@
/doxygen.cfg
/html
/latex

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@ -1,99 +0,0 @@
# Doxyfile 1.9.5
# The PROJECT_NAME tag is a single word (or a sequence of words surrounded by
# double-quotes, unless you are using Doxywizard) that should identify the
# project for which the documentation is generated. This name is used in the
# title of most generated pages and in a few other places.
# The default value is: My Project.
PROJECT_NAME = "Nix"
# The PROJECT_NUMBER tag can be used to enter a project or revision number. This
# could be handy for archiving the generated documentation or if some version
# control system is used.
PROJECT_NUMBER = @PACKAGE_VERSION@
OUTPUT_DIRECTORY = @docdir@
# Using the PROJECT_BRIEF tag one can provide an optional one line description
# for a project that appears at the top of each page and should give viewer a
# quick idea about the purpose of the project. Keep the description short.
PROJECT_BRIEF = "Nix, the purely functional package manager; unstable internal interfaces"
# If the GENERATE_LATEX tag is set to YES, doxygen will generate LaTeX output.
# The default value is: YES.
GENERATE_LATEX = NO
# The INPUT tag is used to specify the files and/or directories that contain
# documented source files. You may enter file names like myfile.cpp or
# directories like /usr/src/myproject. Separate the files or directories with
# spaces. See also FILE_PATTERNS and EXTENSION_MAPPING
# Note: If this tag is empty the current directory is searched.
# FIXME Make this list more maintainable somehow. We could maybe generate this
# in the Makefile, but we would need to change how `.in` files are preprocessed
# so they can expand variables despite configure variables.
INPUT = \
src/libcmd \
src/libexpr \
src/libexpr/flake \
tests/unit/libexpr \
tests/unit/libexpr/value \
tests/unit/libexpr/test \
tests/unit/libexpr/test/value \
src/libexpr/value \
src/libfetchers \
src/libmain \
src/libstore \
src/libstore/build \
src/libstore/builtins \
tests/unit/libstore \
tests/unit/libstore/test \
src/libutil \
tests/unit/libutil \
tests/unit/libutil/test \
src/nix \
src/nix-env \
src/nix-store
# If the MACRO_EXPANSION tag is set to YES, doxygen will expand all macro names
# in the source code. If set to NO, only conditional compilation will be
# performed. Macro expansion can be done in a controlled way by setting
# EXPAND_ONLY_PREDEF to YES.
# The default value is: NO.
# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
MACRO_EXPANSION = YES
# If the EXPAND_ONLY_PREDEF and MACRO_EXPANSION tags are both set to YES then
# the macro expansion is limited to the macros specified with the PREDEFINED and
# EXPAND_AS_DEFINED tags.
# The default value is: NO.
# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
EXPAND_ONLY_PREDEF = YES
# The INCLUDE_PATH tag can be used to specify one or more directories that
# contain include files that are not input files but should be processed by the
# preprocessor. Note that the INCLUDE_PATH is not recursive, so the setting of
# RECURSIVE has no effect here.
# This tag requires that the tag SEARCH_INCLUDES is set to YES.
INCLUDE_PATH = @RAPIDCHECK_HEADERS@
# If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then this
# tag can be used to specify a list of macro names that should be expanded. The
# macro definition that is found in the sources will be used. Use the PREDEFINED
# tag if you want to use a different macro definition that overrules the
# definition found in the source code.
# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
EXPAND_AS_DEFINED = \
DECLARE_COMMON_SERIALISER \
DECLARE_WORKER_SERIALISER \
DECLARE_SERVE_SERIALISER \
LENGTH_PREFIXED_PROTO_HELPER

View file

@ -1,33 +0,0 @@
doxygen_cfg = configure_file(
input : 'doxygen.cfg.in',
output : 'doxygen.cfg',
configuration : {
'PACKAGE_VERSION': meson.project_version(),
'RAPIDCHECK_HEADERS': rapidcheck_meson.get_variable('includedir'),
'docdir' : meson.current_build_dir(),
},
)
internal_api_docs = custom_target(
'internal-api-docs',
command : [
bash,
# Meson can you please just give us a `workdir` argument to custom targets...
'-c',
# We have to prefix the doxygen_cfg path with the project build root
# because of the cd in front.
'cd @0@ && @1@ @2@/@INPUT0@'.format(
meson.project_source_root(),
doxygen.full_path(),
meson.project_build_root(),
),
],
input : [
doxygen_cfg,
],
output : 'html',
install : true,
install_dir : datadir / 'doc/nix/internal-api',
)
alias_target('internal-api-html', internal_api_docs)

View file

@ -1,31 +0,0 @@
"\\[\\]\\{#(?<anchor>[^\\}]+?)\\}" as $empty_anchor_regex |
"\\[(?<text>[^\\]]+?)\\]\\{#(?<anchor>[^\\}]+?)\\}" as $anchor_regex |
def transform_anchors_html:
. | gsub($empty_anchor_regex; "<a name=\"" + .anchor + "\"></a>")
| gsub($anchor_regex; "<a href=\"#" + .anchor + "\" id=\"" + .anchor + "\">" + .text + "</a>");
def transform_anchors_strip:
. | gsub($empty_anchor_regex; "")
| gsub($anchor_regex; .text);
def map_contents_recursively(transformer):
. + {
Chapter: (.Chapter + {
content: .Chapter.content | transformer,
sub_items: .Chapter.sub_items | map(map_contents_recursively(transformer)),
}),
};
def process_command:
.[0] as $context |
.[1] as $body |
$body + {
sections: $body.sections | map(map_contents_recursively(if $context.renderer == "html" then transform_anchors_html else transform_anchors_strip end)),
};
process_command

View file

@ -1,38 +0,0 @@
[book]
title = "Lix Reference Manual"
[build]
create-missing = false
[output.html]
additional-css = ["custom.css"]
additional-js = ["redirects.js"]
# Using our GitHub mirror enables easier typo fixes since there is no easy way
# to just submit a Gerrit CL by the web for trivial stuff.
edit-url-template = "https://github.com/lix-project/lix/tree/main/doc/manual/{path}"
git-repository-url = "https://git.lix.systems/lix-project/lix"
# Handles replacing @docroot@ with a path to ./src relative to that markdown file,
# {{#include handlebars}}, and the @generated@ syntax used within these. it mostly
# but not entirely replaces the links preprocessor (which we cannot simply use due
# to @generated@ files living in a different directory to make meson happy). we do
# not want to disable the links preprocessor entirely though because that requires
# disabling *all* built-in preprocessors and selectively reenabling those we want.
[preprocessor.substitute]
command = "python3 doc/manual/substitute.py"
before = ["anchors", "links"]
[preprocessor.anchors]
renderers = ["html"]
command = "jq --from-file doc/manual/anchors.jq"
[output.markdown]
[output.linkcheck]
# no Internet during the build (in the sandbox)
follow-web-links = false
# mdbook-linkcheck does not understand [foo]{#bar} style links, resulting in
# excessive "Potential incomplete link" warnings. No other kind of warning was
# produced at the time of writing.
warning-policy = "ignore"

View file

@ -1,11 +0,0 @@
h1:not(:first-of-type) {
margin-top: 1.3em;
}
h2 {
margin-top: 1em;
}
.hljs-meta {
user-select: none;
}

View file

@ -1,37 +0,0 @@
let
inherit (builtins) concatStringsSep attrValues mapAttrs;
inherit (import ./utils.nix) optionalString squash;
in
builtinsInfo:
let
showBuiltin =
name:
{
doc,
type,
impure-only,
}:
let
type' = optionalString (type != null) " (${type})";
impureNotice = optionalString impure-only ''
> **Note**
>
> Not available in [pure evaluation mode](@docroot@/command-ref/conf-file.md#conf-pure-eval).
'';
in
squash ''
<dt id="builtins-${name}">
<a href="#builtins-${name}"><code>${name}</code></a>${type'}
</dt>
<dd>
${doc}
${impureNotice}
</dd>
'';
in
concatStringsSep "\n" (attrValues (mapAttrs showBuiltin builtinsInfo))

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@ -1,35 +0,0 @@
let
inherit (builtins) concatStringsSep attrValues mapAttrs;
inherit (import ./utils.nix) optionalString squash;
in
builtinsInfo:
let
showBuiltin =
name:
{
doc,
args,
arity,
experimental-feature,
}:
let
experimentalNotice = optionalString (experimental-feature != null) ''
This function is only available if the [${experimental-feature}](@docroot@/contributing/experimental-features.md#xp-feature-${experimental-feature}) experimental feature is enabled.
'';
in
squash ''
<dt id="builtins-${name}">
<a href="#builtins-${name}"><code>${name} ${listArgs args}</code></a>
</dt>
<dd>
${doc}
${experimentalNotice}
</dd>
'';
listArgs = args: concatStringsSep " " (map (s: "<var>${s}</var>") args);
in
concatStringsSep "\n" (attrValues (mapAttrs showBuiltin builtinsInfo))

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@ -1,22 +0,0 @@
#!/usr/bin/env python3
import glob
import sys
# meson expects makefile-style dependency declarations, i.e.
#
# target: dependency...
#
# meson seems to pass depfiles straight on to ninja even though
# it also parses the file itself (or at least has code to do so
# in its tree), so we must live by ninja's rules: only slashes,
# spaces and octothorpes can be escaped, anything else is taken
# literally. since the rules for these aren't even the same for
# all three we will just fail when we encounter any of them (if
# asserts are off for some reason the depfile will likely point
# to nonexistant paths, making everything phony and thus fine.)
for path in glob.glob(sys.argv[1] + '/**', recursive=True):
assert '\\' not in path
assert ' ' not in path
assert '#' not in path
print("ignored:", path)

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@ -1,224 +0,0 @@
let
inherit (builtins)
attrNames
attrValues
fromJSON
listToAttrs
mapAttrs
concatStringsSep
concatMap
length
lessThan
replaceStrings
sort
;
inherit (import ./utils.nix)
concatStrings
optionalString
filterAttrs
trim
squash
unique
showSettings
;
in
inlineHTML: commandDump:
let
commandInfo = fromJSON commandDump;
showCommand =
{
command,
details,
filename,
toplevel,
}:
let
result = ''
> **Warning** \
> This program is
> [**experimental**](@docroot@/contributing/experimental-features.md#xp-feature-nix-command)
> and its interface is subject to change.
# Name
`${command}` - ${details.description}
# Synopsis
${showSynopsis command details.args}
${maybeSubcommands}
${maybeStoreDocs}
${maybeOptions}
'';
showSynopsis =
command: args:
let
showArgument = arg: "*${arg.label}*" + optionalString (!arg ? arity) "...";
arguments = concatStringsSep " " (map showArgument args);
in
''
`${command}` [*option*...] ${arguments}
'';
maybeSubcommands = optionalString (details ? commands && details.commands != { }) ''
where *subcommand* is one of the following:
${subcommands}
'';
subcommands = if length categories > 1 then listCategories else listSubcommands details.commands;
categories = sort (x: y: x.id < y.id) (
unique (map (cmd: cmd.category) (attrValues details.commands))
);
listCategories = concatStrings (map showCategory categories);
showCategory = cat: ''
**${toString cat.description}:**
${listSubcommands (filterAttrs (n: v: v.category == cat) details.commands)}
'';
listSubcommands = cmds: concatStrings (attrValues (mapAttrs showSubcommand cmds));
showSubcommand = name: subcmd: ''
* [`${command} ${name}`](./${appendName filename name}.md) - ${subcmd.description}
'';
# TODO: move this confusing special case out of here when implementing #8496
maybeStoreDocs = optionalString (details ? doc) (
replaceStrings [ "@stores@" ] [ storeDocs ] details.doc
);
maybeOptions = optionalString (details.flags != { }) ''
# Options
${showOptions details.flags toplevel.flags}
> **Note**
>
> See [`man nix.conf`](@docroot@/command-ref/conf-file.md#command-line-flags) for overriding configuration settings with command line flags.
'';
showOptions =
options: commonOptions:
let
allOptions = options // commonOptions;
showCategory = cat: ''
${optionalString (cat != "") "**${cat}:**"}
${listOptions (filterAttrs (n: v: v.category == cat) allOptions)}
'';
listOptions = opts: concatStringsSep "\n" (attrValues (mapAttrs showOption opts));
showOption =
name: option:
let
result = trim ''
- ${item}
${option.description}
'';
item =
if inlineHTML then
''<span id="opt-${name}">[`--${name}`](#opt-${name})</span> ${shortName} ${labels}''
else
"`--${name}` ${shortName} ${labels}";
shortName = optionalString (option ? shortName) ("/ `-${option.shortName}`");
labels = optionalString (option ? labels) (concatStringsSep " " (map (s: "*${s}*") option.labels));
in
result;
categories = sort lessThan (unique (map (cmd: cmd.category) (attrValues allOptions)));
in
concatStrings (map showCategory categories);
in
squash result;
appendName = filename: name: (if filename == "nix" then "nix3" else filename) + "-" + name;
processCommand =
{
command,
details,
filename,
toplevel,
}:
let
cmd = {
inherit command;
name = filename + ".md";
value = showCommand {
inherit
command
details
filename
toplevel
;
};
};
subcommand =
subCmd:
processCommand {
command = command + " " + subCmd;
details = details.commands.${subCmd};
filename = appendName filename subCmd;
inherit toplevel;
};
in
[ cmd ] ++ concatMap subcommand (attrNames details.commands or { });
manpages = processCommand {
command = "nix";
details = commandInfo.args;
filename = "nix";
toplevel = commandInfo.args;
};
storeDocs =
let
showStore =
name:
{
settings,
doc,
experimentalFeature,
}:
let
experimentalFeatureNote = optionalString (experimentalFeature != null) ''
> **Warning**
> This store is part of an
> [experimental feature](@docroot@/contributing/experimental-features.md).
To use this store, you need to make sure the corresponding experimental feature,
[`${experimentalFeature}`](@docroot@/contributing/experimental-features.md#xp-feature-${experimentalFeature}),
is enabled.
For example, include the following in [`nix.conf`](@docroot@/command-ref/conf-file.md):
```
extra-experimental-features = ${experimentalFeature}
```
'';
in
''
## ${name}
${doc}
${experimentalFeatureNote}
**Settings**:
${showSettings { inherit inlineHTML; } settings}
'';
in
concatStrings (attrValues (mapAttrs showStore commandInfo.stores));
in
listToAttrs manpages

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@ -1,9 +0,0 @@
with builtins;
with import ./utils.nix;
let
showExperimentalFeature = name: doc: ''
- [`${name}`](@docroot@/contributing/experimental-features.md#xp-feature-${name})
'';
in
xps: indent " " (concatStrings (attrValues (mapAttrs showExperimentalFeature xps)))

View file

@ -1,13 +0,0 @@
with builtins;
with import ./utils.nix;
let
showExperimentalFeature =
name: doc:
squash ''
## [`${name}`]{#xp-feature-${name}}
${doc}
'';
in
xps: (concatStringsSep "\n" (attrValues (mapAttrs showExperimentalFeature xps)))

View file

@ -1,61 +0,0 @@
#!/usr/bin/env python3
"""
This script is a helper for this project's Meson buildsystem, to replace its
usage of `nix eval --write-to`. Writing a JSON object as a nested directory
tree is more generic, easier to maintain, and far, far less cursed. Nix
has 'good' support for JSON output. Let's just use it.
"""
import argparse
from pathlib import Path
import json
import sys
name = 'json-to-tree.py'
def log(*args, **kwargs):
kwargs['file'] = sys.stderr
return print(f'{name}:', *args, **kwargs)
def write_dict_to_directory(current_directory: Path, data: dict, files_written=0):
current_directory.mkdir(parents=True, exist_ok=True)
for key, value in data.items():
nested_path = current_directory / key
match value:
case dict(nested_data):
files_written += write_dict_to_directory(nested_path, nested_data)
case str(content):
nested_path.write_text(content)
files_written += 1
case rest:
assert False, \
f'should have been called on a dict or string, not {type(rest)=}\n\t{rest=}'
return files_written
def main():
parser = argparse.ArgumentParser(name)
parser.add_argument('-i', '--input', type=argparse.FileType('r'), default='-',
help='The JSON input to operate on and output as a directory tree',
)
parser.add_argument('-o', '--output', type=Path, required=True,
help='The place to put the directory tree',
)
args = parser.parse_args()
json_string = args.input.read()
try:
data = json.loads(json_string)
except json.JSONDecodeError:
log(f'could not decode JSON from input: {json_string}')
raise
files_written = write_dict_to_directory(args.output, data)
log(f'wrote {files_written} files')
sys.exit(main())

View file

@ -1,349 +0,0 @@
nix_env_for_docs = {
'HOME': '/dummy',
'NIX_CONF_DIR': '/dummy',
'NIX_SSL_CERT_FILE': '/dummy/no-ca-bundle.crt',
'NIX_STATE_DIR': '/dummy',
'NIX_CONFIG': 'cores = 0',
}
nix_for_docs = [ nix, '--experimental-features', 'nix-command' ]
nix_eval_for_docs_common = nix_for_docs + [
'eval',
'-I', 'nix/corepkgs=corepkgs',
'--store', 'dummy://',
'--impure',
]
nix_eval_for_docs = nix_eval_for_docs_common + '--raw'
conf_file_json = custom_target(
command : nix_for_docs + [ 'show-config', '--json' ],
capture : true,
output : 'conf-file.json',
env : nix_env_for_docs,
)
nix_conf_file_md_body = custom_target(
command : nix_eval_for_docs + [
'--expr',
'(import @INPUT0@).showSettings { inlineHTML = true; } (builtins.fromJSON (builtins.readFile @INPUT1@))',
],
capture : true,
input : [
'utils.nix',
conf_file_json,
],
output : 'conf-file.md.body',
env : nix_env_for_docs,
)
nix_conf_file_md = custom_target(
command : [ 'cat', '@INPUT@' ],
capture : true,
input : [
'src/command-ref/conf-file.md',
nix_conf_file_md_body,
],
output : 'conf-file.md',
)
nix_exp_features_json = custom_target(
command : [ nix, '__dump-xp-features' ],
capture : true,
output : 'xp-features.json',
)
language_json = custom_target(
command: [nix, '__dump-language'],
output : 'language.json',
capture : true,
env : nix_env_for_docs,
)
nix3_cli_json = custom_target(
command : [ nix, '__dump-cli' ],
capture : true,
output : 'nix.json',
env : nix_env_for_docs,
)
generate_manual_deps = files(
'generate-deps.py',
)
# Generates builtins.md and builtin-constants.md.
subdir('src/language')
# Generates new-cli pages, experimental-features-shortlist.md, and conf-file.md.
subdir('src/command-ref')
# Generates experimental-feature-descriptions.md.
subdir('src/contributing')
# Generates rl-next-generated.md.
subdir('src/release-notes')
manual = custom_target(
'manual',
command : [
bash,
'-euo', 'pipefail',
'-c',
'''
@0@ @INPUT0@ @CURRENT_SOURCE_DIR@ > @DEPFILE@
cd @SOURCE_ROOT@
@1@ build doc/manual -d @2@ | { grep -Fv "because fragment resolution isn't implemented" || :; }
rm -rf @2@/manual
mv @2@/html @2@/manual
find @2@/manual -iname meson.build -delete
'''.format(
python.full_path(),
mdbook.full_path(),
meson.current_build_dir(),
),
],
input : [
generate_manual_deps,
'book.toml',
'anchors.jq',
'custom.css',
nix3_cli_files,
experimental_features_shortlist_md,
experimental_feature_descriptions_md,
conf_file_md,
builtins_md,
builtin_constants_md,
rl_next_generated,
],
output : [
'manual',
'markdown',
],
depfile : 'manual.d',
env : {
'RUST_LOG': 'info',
'MDBOOK_SUBSTITUTE_SEARCH': meson.current_build_dir() / 'src',
},
)
manual_html = manual[0]
manual_md = manual[1]
install_subdir(
manual_html.full_path(),
install_dir : datadir / 'doc/nix',
)
nix_nested_manpages = [
[ 'nix-env',
[
'delete-generations',
'install',
'list-generations',
'query',
'rollback',
'set-flag',
'set',
'switch-generation',
'switch-profile',
'uninstall',
'upgrade',
],
],
[ 'nix-store',
[
'add-fixed',
'add',
'delete',
'dump-db',
'dump',
'export',
'gc',
'generate-binary-cache-key',
'import',
'load-db',
'optimise',
'print-env',
'query',
'read-log',
'realise',
'repair-path',
'restore',
'serve',
'verify',
'verify-path',
],
],
]
foreach command : nix_nested_manpages
foreach page : command[1]
title = command[0] + ' --' + page
section = '1'
custom_target(
command : [
'./render-manpage.sh',
'--out-no-smarty',
title,
section,
'@INPUT0@/command-ref' / command[0] / (page + '.md'),
'@OUTPUT0@',
],
input : [
manual_md,
],
output : command[0] + '-' + page + '.1',
install : true,
install_dir : mandir / 'man1',
)
endforeach
endforeach
nix3_manpages = [
'nix3-build',
'nix3-bundle',
'nix3-config',
'nix3-config-show',
'nix3-copy',
'nix3-daemon',
'nix3-derivation-add',
'nix3-derivation',
'nix3-derivation-show',
'nix3-develop',
'nix3-doctor',
'nix3-edit',
'nix3-eval',
'nix3-flake-archive',
'nix3-flake-check',
'nix3-flake-clone',
'nix3-flake-info',
'nix3-flake-init',
'nix3-flake-lock',
'nix3-flake',
'nix3-flake-metadata',
'nix3-flake-new',
'nix3-flake-prefetch',
'nix3-flake-show',
'nix3-flake-update',
'nix3-fmt',
'nix3-hash-file',
'nix3-hash',
'nix3-hash-path',
'nix3-hash-to-base16',
'nix3-hash-to-base32',
'nix3-hash-to-base64',
'nix3-hash-to-sri',
'nix3-help',
'nix3-help-stores',
'nix3-key-convert-secret-to-public',
'nix3-key-generate-secret',
'nix3-key',
'nix3-log',
'nix3-nar-cat',
'nix3-nar-dump-path',
'nix3-nar-ls',
'nix3-nar',
'nix3-path-info',
'nix3-print-dev-env',
'nix3-profile-diff-closures',
'nix3-profile-history',
'nix3-profile-install',
'nix3-profile-list',
'nix3-profile',
'nix3-profile-remove',
'nix3-profile-rollback',
'nix3-profile-upgrade',
'nix3-profile-wipe-history',
'nix3-realisation-info',
'nix3-realisation',
'nix3-registry-add',
'nix3-registry-list',
'nix3-registry',
'nix3-registry-pin',
'nix3-registry-remove',
'nix3-repl',
'nix3-run',
'nix3-search',
'nix3-shell',
'nix3-store-add-file',
'nix3-store-add-path',
'nix3-store-cat',
'nix3-store-copy-log',
'nix3-store-copy-sigs',
'nix3-store-delete',
'nix3-store-diff-closures',
'nix3-store-dump-path',
'nix3-store-gc',
'nix3-store-ls',
'nix3-store-make-content-addressed',
'nix3-store',
'nix3-store-optimise',
'nix3-store-path-from-hash-part',
'nix3-store-ping',
'nix3-store-prefetch-file',
'nix3-store-repair',
'nix3-store-sign',
'nix3-store-verify',
'nix3-upgrade-nix',
'nix3-why-depends',
'nix',
]
foreach page : nix3_manpages
section = '1'
custom_target(
command : [
bash,
'@INPUT0@',
page,
section,
'@INPUT1@/command-ref/new-cli/@0@.md'.format(page),
'@OUTPUT@',
],
input : [
'render-manpage.sh',
manual_md,
],
output : page + '.1',
install : true,
install_dir : mandir / 'man1',
)
endforeach
nix_manpages = [
[ 'nix-env', 1 ],
[ 'nix-store', 1 ],
[ 'nix-build', 1 ],
[ 'nix-shell', 1 ],
[ 'nix-instantiate', 1 ],
[ 'nix-collect-garbage', 1 ],
[ 'nix-prefetch-url', 1 ],
[ 'nix-channel', 1 ],
[ 'nix-hash', 1 ],
[ 'nix-copy-closure', 1 ],
[ 'nix.conf', 5, 'conf-file.md' ],
[ 'nix-daemon', 8 ],
[ 'nix-profiles', 5, 'files/profiles.md' ],
]
foreach entry : nix_manpages
title = entry[0]
# nix.conf.5 and nix-profiles.5 are based off of conf-file.md and files/profiles.md,
# rather than a stem identical to its mdbook source.
# Therefore we use an optional third element of this array to override the name pattern
md_file = entry.get(2, title + '.md')
section = entry[1].to_string()
custom_target(
command : [
bash,
'@INPUT0@',
title,
section,
'@INPUT1@/command-ref/@0@'.format(md_file),
'@OUTPUT@',
],
input : [
'render-manpage.sh',
manual_md,
entry.get(3, []),
],
output : '@0@.@1@'.format(entry[0], entry[1]),
install : true,
install_dir : mandir / 'man@0@'.format(entry[1]),
)
endforeach

View file

@ -1,32 +0,0 @@
#!/bin/sh
set -euo pipefail
infile="$1"
outfile="$2"
shift 2
# set a search path for includes. the old makefile-based system splorked
# everything into the source tree and was thus able to not have a search
# path, but the meson system generates intermediate files into dedicated
# directories separate from the source. we still retain the implicit old
# behavior for now as the base search path, once meson is the default we
# can revisit this and remove the implicit search path entry. it's fine.
set -- "$(dirname "$infile")" "$@"
# re-implement mdBook's include directive to make it usable for terminal output and for proper @docroot@ substitution
(grep '{{#include' "$infile" || true) | while read -r line; do
found=false
include="$(printf "$line" | sed 's/{{#include \(.*\)}}/\1/')"
for path in "$@"; do
filename="$path/$include"
if [ -e "$filename" ]; then
found=true
matchline="$(printf "$line" | sed 's|/|\\/|g')"
sed -i "/$matchline/r $filename" "$outfile"
sed -i "s/$matchline//" "$outfile"
break
fi
done
$found || ( echo "#include-d file '$filename' does not exist." >&2; exit 1; )
done

View file

@ -1,40 +0,0 @@
<?xml version="1.0"?>
<xsl:stylesheet
version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:str="http://exslt.org/strings"
extension-element-prefixes="str">
<xsl:output method="xml"/>
<xsl:template match="function|command|literal|varname|filename|option|quote">`<xsl:apply-templates/>'</xsl:template>
<xsl:template match="token"><xsl:text> </xsl:text><xsl:apply-templates /><xsl:text>
</xsl:text></xsl:template>
<xsl:template match="screen|programlisting">
<screen><xsl:apply-templates select="str:split(., '&#xA;')" /></screen>
</xsl:template>
<xsl:template match="section[following::section]">
<section>
<xsl:apply-templates />
<screen><xsl:text>
</xsl:text></screen>
</section>
</xsl:template>
<xsl:template match="*">
<xsl:element name="{name(.)}" namespace="{namespace-uri(.)}">
<xsl:copy-of select="namespace::*" />
<xsl:for-each select="@*">
<xsl:attribute name="{name(.)}" namespace="{namespace-uri(.)}">
<xsl:value-of select="."/>
</xsl:attribute>
</xsl:for-each>
<xsl:apply-templates/>
</xsl:element>
</xsl:template>
</xsl:stylesheet>

View file

@ -1,441 +0,0 @@
// redirect rules for URL fragments (client-side) to prevent link rot.
// this must be done on the client side, as web servers do not see the fragment part of the URL.
// it will only work with JavaScript enabled in the browser, but this is the best we can do here.
// see ./_redirects for path redirects (client-side)
// redirects are declared as follows:
// each entry has as its key a path matching the requested URL path, relative to the mdBook document root.
//
// IMPORTANT: it must specify the full path with file name and suffix
//
// each entry is itself a set of key-value pairs, where
// - keys are anchors on the matched path.
// - values are redirection targets relative to the current path.
const redirects = {
"index.html": {
"part-advanced-topics": "advanced-topics/advanced-topics.html",
"chap-tuning-cores-and-jobs": "advanced-topics/cores-vs-jobs.html",
"chap-diff-hook": "advanced-topics/diff-hook.html",
"check-dirs-are-unregistered": "advanced-topics/diff-hook.html#check-dirs-are-unregistered",
"chap-distributed-builds": "advanced-topics/distributed-builds.html",
"chap-post-build-hook": "advanced-topics/post-build-hook.html",
"chap-post-build-hook-caveats": "advanced-topics/post-build-hook.html#implementation-caveats",
"chap-writing-nix-expressions": "language/index.html",
"part-command-ref": "command-ref/command-ref.html",
"conf-allow-import-from-derivation": "command-ref/conf-file.html#conf-allow-import-from-derivation",
"conf-allow-new-privileges": "command-ref/conf-file.html#conf-allow-new-privileges",
"conf-allowed-uris": "command-ref/conf-file.html#conf-allowed-uris",
"conf-allowed-users": "command-ref/conf-file.html#conf-allowed-users",
"conf-auto-optimise-store": "command-ref/conf-file.html#conf-auto-optimise-store",
"conf-binary-cache-public-keys": "command-ref/conf-file.html#conf-binary-cache-public-keys",
"conf-binary-caches": "command-ref/conf-file.html#conf-binary-caches",
"conf-build-compress-log": "command-ref/conf-file.html#conf-build-compress-log",
"conf-build-cores": "command-ref/conf-file.html#conf-build-cores",
"conf-build-extra-chroot-dirs": "command-ref/conf-file.html#conf-build-extra-chroot-dirs",
"conf-build-extra-sandbox-paths": "command-ref/conf-file.html#conf-build-extra-sandbox-paths",
"conf-build-fallback": "command-ref/conf-file.html#conf-build-fallback",
"conf-build-max-jobs": "command-ref/conf-file.html#conf-build-max-jobs",
"conf-build-max-log-size": "command-ref/conf-file.html#conf-build-max-log-size",
"conf-build-max-silent-time": "command-ref/conf-file.html#conf-build-max-silent-time",
"conf-build-timeout": "command-ref/conf-file.html#conf-build-timeout",
"conf-build-use-chroot": "command-ref/conf-file.html#conf-build-use-chroot",
"conf-build-use-sandbox": "command-ref/conf-file.html#conf-build-use-sandbox",
"conf-build-use-substitutes": "command-ref/conf-file.html#conf-build-use-substitutes",
"conf-build-users-group": "command-ref/conf-file.html#conf-build-users-group",
"conf-builders": "command-ref/conf-file.html#conf-builders",
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"attr-system": "language/derivations.html#attr-system",
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"sec-constructs": "language/constructs.html",
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"gloss-output-path": "glossary.html#gloss-output-path",
"gloss-profile": "glossary.html#gloss-profile",
"gloss-reachable": "glossary.html#gloss-reachable",
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"gloss-user-env": "glossary.html#gloss-user-env",
"gloss-validity": "glossary.html#gloss-validity",
"part-glossary": "glossary.html",
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},
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"lists": "#list",
"strings": "#string",
"lists": "#list",
"attribute-sets": "#attribute-set",
},
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"linux": "uninstall.html#linux",
"macos": "uninstall.html#macos",
"uninstalling": "uninstall.html",
}
"contributing/hacking.html": {
"nix-with-flakes": "#building-nix-with-flakes",
"classic-nix": "#building-nix",
"running-tests": "testing.html#running-tests",
"unit-tests": "testing.html#unit-tests",
"functional-tests": "testing.html#functional-tests",
"debugging-failing-functional-tests": "testing.html#debugging-failing-functional-tests",
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};
// the following code matches the current page's URL against the set of redirects.
//
// it is written to minimize the latency between page load and redirect.
// therefore we avoid function calls, copying data, and unnecessary loops.
// IMPORTANT: we use stateful array operations and their order matters!
//
// matching URLs is more involved than it should be:
//
// 1. `document.location.pathname` can have an arbitrary prefix.
//
// 2. `path_to_root` is set by mdBook. it consists only of `../`s and
// determines the depth of `<path>` relative to the prefix:
//
// `document.location.pathname`
// |------------------------------|
// /<prefix>/<path>/[<file>[.html]][#<anchor>]
// |----|
// `path_to_root` has same number of path segments
//
// source: https://phaiax.github.io/mdBook/format/theme/index-hbs.html#data
//
// 3. the following paths are equivalent:
//
// /foo/bar/
// /foo/bar/index.html
// /foo/bar/index
//
// 4. the following paths are also equivalent:
//
// /foo/bar/baz
// /foo/bar/baz.html
//
let segments = document.location.pathname.split('/');
let file = segments.pop();
// normalize file name
if (file === '') { file = "index.html"; }
else if (!file.endsWith('.html')) { file = file + '.html'; }
segments.push(file);
// use `path_to_root` to discern prefix from path.
const depth = path_to_root.split('/').length;
// remove segments containing prefix. the following works because
// 1. the original `document.location.pathname` is absolute,
// hence first element of `segments` is always empty.
// 2. last element of splitting `path_to_root` is also always empty.
// 3. last element of `segments` is the file name.
//
// visual example:
//
// '/foo/bar/baz.html'.split('/') -> [ '', 'foo', 'bar', 'baz.html' ]
// '../'.split('/') -> [ '..', '' ]
//
// the following operations will then result in
//
// path = 'bar/baz.html'
//
segments.splice(0, segments.length - depth);
const path = segments.join('/');
// anchor starts with the hash character (`#`),
// but our redirect declarations don't, so we strip it.
// example:
// document.location.hash -> '#foo'
// document.location.hash.substring(1) -> 'foo'
const anchor = document.location.hash.substring(1);
const redirect = redirects[path];
if (redirect) {
const target = redirect[anchor];
if (target) {
document.location.href = target;
}
}

View file

@ -1,25 +0,0 @@
#!/bin/sh
set -euo pipefail
lowdown_args=
if [ "$1" = --out-no-smarty ]; then
lowdown_args=--out-no-smarty
shift
fi
[ "$#" = 4 ] || {
echo "wrong number of args passed" >&2
exit 1
}
title="$1"
section="$2"
infile="$3"
outfile="$4"
(
printf "Title: %s\n\n" "$title"
cat "$infile"
) | lowdown -sT man --nroff-nolinks $lowdown_args -M section="$section" -o "$outfile"

View file

@ -1,15 +0,0 @@
---
synopsis: Clang build timing analysis
cls: 587
---
We now have Clang build profiling available, which generates Chrome
tracing files for each compilation unit. To enable it, run `meson configure
build -Dprofile-build=enabled` then rerun the compilation.
If you want to make the build go faster, do a clang build with meson, then run
`maintainers/buildtime_report.sh build`, then contemplate how to improve the
build time.
You can also look at individual object files' traces in
<https://ui.perfetto.dev>.

View file

@ -1,40 +0,0 @@
---
synopsis: Concise error printing in `nix repl`
prs: 9928
cls: 811
---
Previously, if an element of a list or attribute set threw an error while
evaluating, `nix repl` would print the entire error (including source location
information) inline. This output was clumsy and difficult to parse:
```
nix-repl> { err = builtins.throw "uh oh!"; }
{ err = «error:
… while calling the 'throw' builtin
at «string»:1:9:
1| { err = builtins.throw "uh oh!"; }
| ^
error: uh oh!»; }
```
Now, only the error message is displayed, making the output much more readable.
```
nix-repl> { err = builtins.throw "uh oh!"; }
{ err = «error: uh oh!»; }
```
However, if the whole expression being evaluated throws an error, source
locations and (if applicable) a stack trace are printed, just like you'd expect:
```
nix-repl> builtins.throw "uh oh!"
error:
… while calling the 'throw' builtin
at «string»:1:1:
1| builtins.throw "uh oh!"
| ^
error: uh oh!
```

View file

@ -1,9 +0,0 @@
---
synopsis: "`--debugger` can now access bindings from `let` expressions"
prs: 9918
issues: 8827
---
Breakpoints and errors in the bindings of a `let` expression can now access
those bindings in the debugger. Previously, only the body of `let` expressions
could access those bindings.

View file

@ -1,9 +0,0 @@
---
synopsis: Enter the `--debugger` when `builtins.trace` is called if `debugger-on-trace` is set
prs: 9914
---
If the `debugger-on-trace` option is set and `--debugger` is given,
`builtins.trace` calls will behave similarly to `builtins.break` and will enter
the debug REPL. This is useful for determining where warnings are being emitted
from.

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@ -1,7 +0,0 @@
---
synopsis: Stop vendoring toml11
cls: 675
---
We don't apply any patches to it, and vendoring it locks users into
bugs (it hasn't been updated since its introduction in late 2021).

View file

@ -1,6 +0,0 @@
---
synopsis: Fix handling of truncated `.drv` files.
prs: 9673
---
Previously a `.drv` that was truncated in the middle of a string would case nix to enter an infinite loop, eventually exhausting all memory and crashing.

View file

@ -1,22 +0,0 @@
---
synopsis: Duplicate attribute reports are more accurate
cls: 557
---
Duplicate attribute errors are now more accurate, showing the path at which an error was detected rather than the full, possibly longer, path that caused the error.
Error reports are now
```ShellSession
$ nix eval --expr '{ a.b = 1; a.b.c.d = 1; }'
error: attribute 'a.b' already defined at «string»:1:3
at «string»:1:12:
1| { a.b = 1; a.b.c.d = 1;
| ^
```
instead of
```ShellSession
$ nix eval --expr '{ a.b = 1; a.b.c.d = 1; }'
error: attribute 'a.b.c.d' already defined at «string»:1:3
at «string»:1:12:
1| { a.b = 1; a.b.c.d = 1;
| ^
```

View file

@ -1,6 +0,0 @@
---
synopsis: Disallow empty search regex in `nix search`
prs: 9481
---
[`nix search`](@docroot@/command-ref/new-cli/nix3-search.md) now requires a search regex to be passed. To show all packages, use `^`.

View file

@ -1,25 +0,0 @@
---
synopsis: The `--debugger` will start more reliably in `let` expressions and function calls
prs: 9917
issues: 6649
---
Previously, if you attempted to evaluate this file with the debugger:
```nix
let
a = builtins.trace "before inner break" (
builtins.break "hello"
);
b = builtins.trace "before outer break" (
builtins.break a
);
in
b
```
Lix would correctly enter the debugger at `builtins.break a`, but if you asked
it to `:continue`, it would skip over the `builtins.break "hello"` expression
entirely.
Now, Lix will correctly enter the debugger at both breakpoints.

View file

@ -1,7 +0,0 @@
---
synopsis: Reduce eval memory usage and wall time
prs: 9658
---
Reduce the size of the `Env` struct used in the evaluator by a pointer, or 8 bytes on most modern machines.
This reduces memory usage during eval by around 2% and wall time by around 3%.

View file

@ -1,12 +0,0 @@
---
synopsis: Add new `eval-system` setting
prs: 4093
---
Add a new `eval-system` option.
Unlike `system`, it just overrides the value of `builtins.currentSystem`.
This is more useful than overriding `system`, because you can build these derivations on remote builders which can work on the given system.
In contrast, `system` also effects scheduling which will cause Lix to build those derivations locally even if that doesn't make sense.
`eval-system` only takes effect if it is non-empty.
If empty (the default) `system` is used as before, so there is no breakage.

View file

@ -1,8 +0,0 @@
---
synopsis: Creating setuid/setgid binaries with fchmodat2 is now prohibited by the build sandbox
prs: 10501
---
The build sandbox blocks any attempt to create setuid/setgid binaries, but didn't check
for the use of the `fchmodat2` syscall which was introduced in Linux 6.6 and is used by
glibc >=2.39. This is fixed now.

View file

@ -1,21 +0,0 @@
---
synopsis: Fix nested flake input `follows`
prs: 6621
cls: 994
---
Previously nested-input overrides were ignored; that is, the following did not
override anything, in spite of the `nix3-flake` manual documenting it working:
```
{
inputs = {
foo.url = "github:bar/foo";
foo.inputs.bar.inputs.nixpkgs = "nixpkgs";
};
}
```
This is useful to avoid the 1000 instances of nixpkgs problem without having
each flake in the dependency tree to expose all of its transitive dependencies
for modification.

View file

@ -1,32 +0,0 @@
---
synopsis: Nested debuggers are no longer supported
prs: 9920
---
Previously, evaluating an expression that throws an error in the debugger would
enter a second, nested debugger:
```
nix-repl> builtins.throw "what"
error: what
Starting REPL to allow you to inspect the current state of the evaluator.
Welcome to Nix 2.18.1. Type :? for help.
nix-repl>
```
Now, it just prints the error message like `nix repl`:
```
nix-repl> builtins.throw "what"
error:
… while calling the 'throw' builtin
at «string»:1:1:
1| builtins.throw "what"
| ^
error: what
```

View file

@ -1,7 +0,0 @@
---
synopsis: consistent order of lambda formals in printed expressions
prs: 9874
---
Always print lambda formals in lexicographic order rather than the internal, creation-time based symbol order.
This makes printed formals independent of the context they appear in.

View file

@ -1,6 +0,0 @@
---
synopsis: fix duplicate attribute error positions for `inherit`
prs: 9874
---
When an inherit caused a duplicate attribute error the position of the error was not reported correctly, placing the error with the inherit itself or at the start of the bindings block instead of the offending attribute name.

View file

@ -1,7 +0,0 @@
---
synopsis: "`inherit (x) ...` evaluates `x` only once"
prs: 9847
---
`inherit (x) a b ...` now evaluates the expression `x` only once for all inherited attributes rather than once for each inherited attribute.
This does not usually have a measurable impact, but side-effects (such as `builtins.trace`) would be duplicated and expensive expressions (such as derivations) could cause a measurable slowdown.

View file

@ -1,10 +0,0 @@
---
synopsis: Store paths are allowed to start with `.`
issues: 912
prs: [9867, 9091, 9095, 9120, 9121, 9122, 9130, 9219, 9224]
---
Leading periods were allowed by accident in Nix 2.4. The Nix team has considered this to be a bug, but this behavior has since been relied on by users, leading to unnecessary difficulties.
From now on, leading periods are officially, definitively supported. The names `.` and `..` are disallowed, as well as those starting with `.-` or `..-`.
Nix versions that denied leading periods are documented [in the issue](https://github.com/NixOS/nix/issues/912#issuecomment-1919583286).

View file

@ -1,23 +0,0 @@
---
synopsis: Lix turns more internal bugs into crashes
cls: [797, 626]
---
Lix now enables build options such as trapping on signed overflow and enabling
libstdc++ assertions by default. These may find new bugs in Lix, which will
present themselves as Lix processes aborting, potentially without an error
message.
If Lix processes abort on your machine, this is a bug. Please file a bug,
ideally with the core dump (or information from it).
On Linux, run `coredumpctl list`, find the crashed process's PID at
the bottom of the list, then run `coredumpctl info THE-PID`. You can then paste
the output into a bug report.
On macOS, open the Console app from Applications/Utilities, select Crash
Reports, select the crash report in question. Right click on it, select Open In
Finder, then include that file in your bug report. [See the Apple
documentation][apple-crashreport] for more details.
[apple-crashreport]: https://developer.apple.com/documentation/xcode/acquiring-crash-reports-and-diagnostic-logs#Locate-crash-reports-and-memory-logs-on-the-device

View file

@ -1,7 +0,0 @@
---
synopsis: rename 'nix show-config' to 'nix config show'
issues: 7672
prs: 9477
---
`nix show-config` was renamed to `nix config show` to be more consistent with the rest of the command-line interface.

View file

@ -1,6 +0,0 @@
---
synopsis: Fix `nix-env --query --drv-path --json`
prs: 9257
---
Fixed a bug where `nix-env --query` ignored `--drv-path` when `--json` was set.

View file

@ -1,33 +0,0 @@
---
synopsis: "`nix flake check` logs the checks"
issues: 8882
prs: 8893
---
`nix flake check` now logs the checks it runs and the derivations it evaluates:
```
$ nix flake check -v
evaluating flake...
checking flake output 'checks'...
checking derivation 'checks.aarch64-darwin.ghciwatch-tests'...
derivation evaluated to /nix/store/nh7dlvsrhds4cxl91mvgj4h5cbq6skmq-ghciwatch-test-0.3.0.drv
checking derivation 'checks.aarch64-darwin.ghciwatch-clippy'...
derivation evaluated to /nix/store/9cb5a6wmp6kf6hidqw9wphidvb8bshym-ghciwatch-clippy-0.3.0.drv
checking derivation 'checks.aarch64-darwin.ghciwatch-doc'...
derivation evaluated to /nix/store/8brdd3jbawfszpbs7vdpsrhy80as1il8-ghciwatch-doc-0.3.0.drv
checking derivation 'checks.aarch64-darwin.ghciwatch-fmt'...
derivation evaluated to /nix/store/wjhs0l1njl5pyji53xlmfjrlya0wmz8p-ghciwatch-fmt-0.3.0.drv
checking derivation 'checks.aarch64-darwin.ghciwatch-audit'...
derivation evaluated to /nix/store/z0mps8dyj2ds7c0fn0819y5h5611033z-ghciwatch-audit-0.3.0.drv
checking flake output 'packages'...
checking derivation 'packages.aarch64-darwin.default'...
derivation evaluated to /nix/store/41abbdyglw5x9vcsvd89xan3ydjf8d7r-ghciwatch-0.3.0.drv
checking flake output 'apps'...
checking flake output 'devShells'...
checking derivation 'devShells.aarch64-darwin.default'...
derivation evaluated to /nix/store/bc935gz7dylzmcpdb5cczr8gngv8pmdb-nix-shell.drv
running 5 flake checks...
warning: The check omitted these incompatible systems: aarch64-linux, x86_64-darwin, x86_64-linux
Use '--all-systems' to check all.
```

View file

@ -1,17 +0,0 @@
---
synopsis: "`Overhaul `nix flake update` and `nix flake lock` UX"
prs: 8817
---
The interface for creating and updating lock files has been overhauled:
- [`nix flake lock`](@docroot@/command-ref/new-cli/nix3-flake-lock.md) only creates lock files and adds missing inputs now.
It will *never* update existing inputs.
- [`nix flake update`](@docroot@/command-ref/new-cli/nix3-flake-update.md) does the same, but *will* update inputs.
- Passing no arguments will update all inputs of the current flake, just like it already did.
- Passing input names as arguments will ensure only those are updated. This replaces the functionality of `nix flake lock --update-input`
- To operate on a flake outside the current directory, you must now pass `--flake path/to/flake`.
- The flake-specific flags `--recreate-lock-file` and `--update-input` have been removed from all commands operating on installables.
They are superceded by `nix flake update`.

View file

@ -1,9 +0,0 @@
---
synopsis: "`nix profile` now allows referring to elements by human-readable name, and no longer accepts indices"
prs: 8678
cls: [978, 980]
---
[`nix profile`](@docroot@/command-ref/new-cli/nix3-profile.md) now uses names to refer to installed packages when running [`list`](@docroot@/command-ref/new-cli/nix3-profile-list.md), [`remove`](@docroot@/command-ref/new-cli/nix3-profile-remove.md) or [`upgrade`](@docroot@/command-ref/new-cli/nix3-profile-upgrade.md) as opposed to indices. Indices have been removed. Profile element names are generated when a package is installed and remain the same until the package is removed.
**Warning**: The `manifest.nix` file used to record the contents of profiles has changed. Lix will automatically upgrade profiles to the new version when you modify the profile. After that, the profile can no longer be used by older versions of Lix.

View file

@ -1,11 +0,0 @@
---
synopsis: "`builtins.nixVersion` now returns a fixed value \"2.18.3-lix\""
cls: 558
---
`builtins.nixVersion` now returns a fixed value `"2.18.3-lix"`. This prevents
feature detection assuming that features that exist in Nix post-Lix-branch-off
might exist, even though the Lix version is greater than the Nix version.
In the future, check for builtins for feature detection. If a feature cannot be
detected by *those* means, please file a Lix bug.

View file

@ -1,8 +0,0 @@
---
synopsis: re-evaluate cached evaluation errors
cls: 771
---
"cached failure of [expr]" errors have been removed: expressions already in the
eval cache as a failure will now simply be re-evaluated, removing the need to
set `--no-eval-cache` or similar to see the error.

View file

@ -1,24 +0,0 @@
---
synopsis: Coercion errors include the failing value
issues: 561
prs: 9754
---
The `error: cannot coerce a <TYPE> to a string` message now includes the value
which caused the error.
Before:
```
error: cannot coerce a set to a string
```
After:
```
error: cannot coerce a set to a string: { aesSupport = «thunk»;
avx2Support = «thunk»; avx512Support = «thunk»; avxSupport = «thunk»;
canExecute = «thunk»; config = «thunk»; darwinArch = «thunk»; darwinMinVersion
= «thunk»; darwinMinVersionVariable = «thunk»; darwinPlatform = «thunk»; «84
attributes elided»}
```

View file

@ -1,23 +0,0 @@
---
synopsis: Type errors include the failing value
issues: 561
prs: 9753
---
In errors like `value is an integer while a list was expected`, the message now
includes the failing value.
Before:
```
error: value is a set while a string was expected
```
After:
```
error: expected a string but found a set: { ghc810 = «thunk»;
ghc8102Binary = «thunk»; ghc8107 = «thunk»; ghc8107Binary = «thunk»;
ghc865Binary = «thunk»; ghc90 = «thunk»; ghc902 = «thunk»; ghc92 = «thunk»;
ghc924Binary = «thunk»; ghc925 = «thunk»; «17 attributes elided»}
```

View file

@ -1,37 +0,0 @@
---
synopsis: "Visual clutter in `--debugger` is reduced"
prs: 9919
---
Before:
```
info: breakpoint reached
Starting REPL to allow you to inspect the current state of the evaluator.
Welcome to Nix 2.20.0pre20231222_dirty. Type :? for help.
nix-repl> :continue
error: uh oh
Starting REPL to allow you to inspect the current state of the evaluator.
Welcome to Nix 2.20.0pre20231222_dirty. Type :? for help.
nix-repl>
```
After:
```
info: breakpoint reached
Nix 2.20.0pre20231222_dirty debugger
Type :? for help.
nix-repl> :continue
error: uh oh
nix-repl>
```

View file

@ -1,13 +0,0 @@
---
synopsis: Experimental REPL support for documentation comments using `:doc`
cls: 564
---
Using `:doc` in the REPL now supports showing documentation comments when defined on a function.
Previously this was only able to document builtins, however it now will show comments defined on a lambda as well.
This support is experimental and relies on an embedded version of [nix-doc](https://github.com/lf-/nix-doc).
The logic also supports limited Markdown formatting of doccomments and should easily support any [RFC 145](https://github.com/NixOS/rfcs/blob/master/rfcs/0145-doc-strings.md)
compatible documentation comments in addition to simple commented documentation.

View file

@ -1,36 +0,0 @@
---
synopsis: Add `repl-overlays` option
prs: 10203
cls: 504
---
A `repl-overlays` option has been added, which specifies files that can overlay
and modify the top-level bindings in `nix repl`. For example, with the
following contents in `~/.config/nix/repl.nix`:
```nix
info: final: prev: let
optionalAttrs = predicate: attrs:
if predicate
then attrs
else {};
in
optionalAttrs (prev ? legacyPackages && prev.legacyPackages ? ${info.currentSystem})
{
pkgs = prev.legacyPackages.${info.currentSystem};
}
```
We can run `nix repl` and use `pkgs` to refer to `legacyPackages.${currentSystem}`:
```ShellSession
$ nix repl --repl-overlays ~/.config/nix/repl.nix nixpkgs
Lix 2.90.0
Type :? for help.
Loading installable 'flake:nixpkgs#'...
Added 5 variables.
Loading 'repl-overlays'...
Added 6 variables.
nix-repl> pkgs.bash
«derivation /nix/store/g08b5vkwwh0j8ic9rkmd8mpj878rk62z-bash-5.2p26.drv»
```

View file

@ -1,14 +0,0 @@
---
synopsis: reintroduce shortened `-E` form for `--expr` to new CLI
cls: 605
---
In the past, it was possible to supply a shorter `-E` flag instead of fully
specifying `--expr` every time you wished to provide an expression that would
be evaluated to produce the given command's input. This was retained for the
`--file` flag when the new CLI utilities were written with `-f`, but `-E` was
dropped.
We now restore the `-E` short form for better UX. This is most useful for
`nix eval` but most any command that takes an Installable argument should benefit
from it as well.

View file

@ -1,23 +0,0 @@
---
synopsis: "In the debugger, `while evaluating the attribute` errors now include position information"
prs: 9915
---
Before:
```
0: while evaluating the attribute 'python311.pythonForBuild.pkgs'
0x600001522598
```
After:
```
0: while evaluating the attribute 'python311.pythonForBuild.pkgs'
/nix/store/hg65h51xnp74ikahns9hyf3py5mlbbqq-source/overrides/default.nix:132:27
131|
132| bootstrappingBase = pkgs.${self.python.pythonAttr}.pythonForBuild.pkgs;
| ^
133| in
```

View file

@ -1,42 +0,0 @@
---
synopsis: Source locations are printed more consistently in errors
issues: 561
prs: 9555
---
Source location information is now included in error messages more
consistently. Given this code:
```nix
let
attr = {foo = "bar";};
key = {};
in
attr.${key}
```
Previously, Nix would show this unhelpful message when attempting to evaluate
it:
```
error:
… while evaluating an attribute name
error: value is a set while a string was expected
```
Now, the error message displays where the problematic value was found:
```
error:
… while evaluating an attribute name
at bad.nix:4:11:
3| key = {};
4| in attr.${key}
| ^
5|
error: expected a string but found a set: { }
```

View file

@ -1,32 +0,0 @@
---
synopsis: Some stack overflow segfaults are fixed
issues: 9616
prs: 9617
---
The number of nested function calls has been restricted, to detect and report
infinite function call recursions. The default maximum call depth is 10,000 and
can be set with [the `max-call-depth`
option](@docroot@/command-ref/conf-file.md#conf-max-call-depth).
This fixes segfaults or the following unhelpful error message in many cases:
error: stack overflow (possible infinite recursion)
Before:
```
$ nix-instantiate --eval --expr '(x: x x) (x: x x)'
Segmentation fault: 11
```
After:
```
$ nix-instantiate --eval --expr '(x: x x) (x: x x)'
error: stack overflow
at «string»:1:14:
1| (x: x x) (x: x x)
| ^
```

View file

@ -1,6 +0,0 @@
---
synopsis: add --store-path argument to `nix upgrade-nix`, to manually specify the Nix to upgrade to
cls: 953
---
`nix upgrade-nix` by default downloads a manifest to find the new Nix version to upgrade to, but now you can specify `--store-path` to upgrade Nix to an arbitrary version from the Nix store.

View file

@ -1,8 +0,0 @@
---
synopsis: using `nix profile` on `/nix/var/nix/profiles/default` no longer breaks `nix upgrade-nix`
cls: 952
---
On non-NixOS, Nix is conventionally installed into a `nix-env` style profile at /nix/var/nix/profiles/default.
Like any `nix-env` profile, using `nix profile` on it automatically migrates it to a `nix profile` style profile, which is incompatible with `nix-env`.
`nix upgrade-nix` previously relied solely on `nix-env` to do the upgrade, but now will work fine with either kind of profile.

View file

@ -1,8 +0,0 @@
---
synopsis: Upstart scripts removed
cls: 574
---
Upstart scripts have been removed from Lix, since Upstart is obsolete and has
not been shipped by any major distributions for many years. If these are
necessary to your use case, please back port them to your packaging.

View file

@ -1,31 +0,0 @@
---
synopsis: Better error reporting for `with` expressions
prs: 9658
---
`with` expressions using non-attrset values to resolve variables are now reported with proper positions.
Previously an incorrect `with` expression would report no position at all, making it hard to determine where the error originated:
```
nix-repl> with 1; a
error:
<borked>
at «none»:0: (source not available)
error: value is an integer while a set was expected
```
Now position information is preserved and reported as with most other errors:
```
nix-repl> with 1; a
error:
… while evaluating the first subexpression of a with expression
at «string»:1:1:
1| with 1; a
| ^
error: expected a set but found an integer: 1
```

View file

@ -1,248 +0,0 @@
# Table of Contents
- [Introduction](introduction.md)
- [Quick Start](quick-start.md)
- [Installation](installation/installation.md)
- [Supported Platforms](installation/supported-platforms.md)
- [Installing a Binary Distribution](installation/installing-binary.md)
- [Installing Lix from Source](installation/installing-source.md)
- [Prerequisites](installation/prerequisites-source.md)
- [Obtaining a Source Distribution](installation/obtaining-source.md)
- [Building Lix from Source](installation/building-source.md)
- [Using Lix within Docker](installation/installing-docker.md)
- [Security](installation/nix-security.md)
- [Single-User Mode](installation/single-user.md)
- [Multi-User Mode](installation/multi-user.md)
- [Environment Variables](installation/env-variables.md)
- [Upgrading Lix](installation/upgrading.md)
- [Uninstalling Lix](installation/uninstall.md)
- [Package Management](package-management/package-management.md)
- [Basic Package Management](package-management/basic-package-mgmt.md)
- [Profiles](package-management/profiles.md)
- [Garbage Collection](package-management/garbage-collection.md)
- [Garbage Collector Roots](package-management/garbage-collector-roots.md)
- [Sharing Packages Between Machines](package-management/sharing-packages.md)
- [Serving a Nix store via HTTP](package-management/binary-cache-substituter.md)
- [Copying Closures via SSH](package-management/copy-closure.md)
- [Serving a Nix store via SSH](package-management/ssh-substituter.md)
- [Serving a Nix store via S3](package-management/s3-substituter.md)
- [Nix Language](language/index.md)
- [Data Types](language/values.md)
- [Language Constructs](language/constructs.md)
- [String interpolation](language/string-interpolation.md)
- [Operators](language/operators.md)
- [Derivations](language/derivations.md)
- [Advanced Attributes](language/advanced-attributes.md)
- [Built-in Constants](language/builtin-constants.md)
- [Built-in Functions](language/builtins.md)
- [Advanced Topics](advanced-topics/advanced-topics.md)
- [Remote Builds](advanced-topics/distributed-builds.md)
- [Tuning Cores and Jobs](advanced-topics/cores-vs-jobs.md)
- [Verifying Build Reproducibility](advanced-topics/diff-hook.md)
- [Using the `post-build-hook`](advanced-topics/post-build-hook.md)
- [Command Reference](command-ref/command-ref.md)
- [Common Options](command-ref/opt-common.md)
- [Common Environment Variables](command-ref/env-common.md)
- [Main Commands](command-ref/main-commands.md)
- [nix-build](command-ref/nix-build.md)
- [nix-shell](command-ref/nix-shell.md)
- [nix-store](command-ref/nix-store.md)
- [nix-store --add-fixed](command-ref/nix-store/add-fixed.md)
- [nix-store --add](command-ref/nix-store/add.md)
- [nix-store --delete](command-ref/nix-store/delete.md)
- [nix-store --dump-db](command-ref/nix-store/dump-db.md)
- [nix-store --dump](command-ref/nix-store/dump.md)
- [nix-store --export](command-ref/nix-store/export.md)
- [nix-store --gc](command-ref/nix-store/gc.md)
- [nix-store --generate-binary-cache-key](command-ref/nix-store/generate-binary-cache-key.md)
- [nix-store --import](command-ref/nix-store/import.md)
- [nix-store --load-db](command-ref/nix-store/load-db.md)
- [nix-store --optimise](command-ref/nix-store/optimise.md)
- [nix-store --print-env](command-ref/nix-store/print-env.md)
- [nix-store --query](command-ref/nix-store/query.md)
- [nix-store --read-log](command-ref/nix-store/read-log.md)
- [nix-store --realise](command-ref/nix-store/realise.md)
- [nix-store --repair-path](command-ref/nix-store/repair-path.md)
- [nix-store --restore](command-ref/nix-store/restore.md)
- [nix-store --serve](command-ref/nix-store/serve.md)
- [nix-store --verify-path](command-ref/nix-store/verify-path.md)
- [nix-store --verify](command-ref/nix-store/verify.md)
- [nix-env](command-ref/nix-env.md)
- [nix-env --delete-generations](command-ref/nix-env/delete-generations.md)
- [nix-env --install](command-ref/nix-env/install.md)
- [nix-env --list-generations](command-ref/nix-env/list-generations.md)
- [nix-env --query](command-ref/nix-env/query.md)
- [nix-env --rollback](command-ref/nix-env/rollback.md)
- [nix-env --set-flag](command-ref/nix-env/set-flag.md)
- [nix-env --set](command-ref/nix-env/set.md)
- [nix-env --switch-generation](command-ref/nix-env/switch-generation.md)
- [nix-env --switch-profile](command-ref/nix-env/switch-profile.md)
- [nix-env --uninstall](command-ref/nix-env/uninstall.md)
- [nix-env --upgrade](command-ref/nix-env/upgrade.md)
- [Utilities](command-ref/utilities.md)
- [nix-channel](command-ref/nix-channel.md)
- [nix-collect-garbage](command-ref/nix-collect-garbage.md)
- [nix-copy-closure](command-ref/nix-copy-closure.md)
- [nix-daemon](command-ref/nix-daemon.md)
- [nix-hash](command-ref/nix-hash.md)
- [nix-instantiate](command-ref/nix-instantiate.md)
- [nix-prefetch-url](command-ref/nix-prefetch-url.md)
- [Experimental Commands](command-ref/experimental-commands.md)
- [nix](command-ref/new-cli/nix.md)
- [nix build](command-ref/new-cli/nix3-build.md)
- [nix bundle](command-ref/new-cli/nix3-bundle.md)
- [nix config](command-ref/new-cli/nix3-config.md)
- [nix config show](command-ref/new-cli/nix3-config-show.md)
- [nix copy](command-ref/new-cli/nix3-copy.md)
- [nix daemon](command-ref/new-cli/nix3-daemon.md)
- [nix derivation](command-ref/new-cli/nix3-derivation.md)
- [nix derivation add](command-ref/new-cli/nix3-derivation-add.md)
- [nix derivation show](command-ref/new-cli/nix3-derivation-show.md)
- [nix develop](command-ref/new-cli/nix3-develop.md)
- [nix doctor](command-ref/new-cli/nix3-doctor.md)
- [nix edit](command-ref/new-cli/nix3-edit.md)
- [nix eval](command-ref/new-cli/nix3-eval.md)
- [nix flake](command-ref/new-cli/nix3-flake.md)
- [nix flake archive](command-ref/new-cli/nix3-flake-archive.md)
- [nix flake check](command-ref/new-cli/nix3-flake-check.md)
- [nix flake clone](command-ref/new-cli/nix3-flake-clone.md)
- [nix flake info](command-ref/new-cli/nix3-flake-info.md)
- [nix flake init](command-ref/new-cli/nix3-flake-init.md)
- [nix flake lock](command-ref/new-cli/nix3-flake-lock.md)
- [nix flake metadata](command-ref/new-cli/nix3-flake-metadata.md)
- [nix flake new](command-ref/new-cli/nix3-flake-new.md)
- [nix flake prefetch](command-ref/new-cli/nix3-flake-prefetch.md)
- [nix flake show](command-ref/new-cli/nix3-flake-show.md)
- [nix flake update](command-ref/new-cli/nix3-flake-update.md)
- [nix fmt](command-ref/new-cli/nix3-fmt.md)
- [nix hash](command-ref/new-cli/nix3-hash.md)
- [nix hash file](command-ref/new-cli/nix3-hash-file.md)
- [nix hash path](command-ref/new-cli/nix3-hash-path.md)
- [nix hash to-base16](command-ref/new-cli/nix3-hash-to-base16.md)
- [nix hash to-base32](command-ref/new-cli/nix3-hash-to-base32.md)
- [nix hash to-base64](command-ref/new-cli/nix3-hash-to-base64.md)
- [nix hash to-sri](command-ref/new-cli/nix3-hash-to-sri.md)
- [nix help](command-ref/new-cli/nix3-help.md)
- [nix help-stores](command-ref/new-cli/nix3-help-stores.md)
- [nix key](command-ref/new-cli/nix3-key.md)
- [nix key convert-secret-to-public](command-ref/new-cli/nix3-key-convert-secret-to-public.md)
- [nix key generate-secret](command-ref/new-cli/nix3-key-generate-secret.md)
- [nix log](command-ref/new-cli/nix3-log.md)
- [nix nar](command-ref/new-cli/nix3-nar.md)
- [nix nar cat](command-ref/new-cli/nix3-nar-cat.md)
- [nix nar dump-path](command-ref/new-cli/nix3-nar-dump-path.md)
- [nix nar ls](command-ref/new-cli/nix3-nar-ls.md)
- [nix path-info](command-ref/new-cli/nix3-path-info.md)
- [nix print-dev-env](command-ref/new-cli/nix3-print-dev-env.md)
- [nix profile](command-ref/new-cli/nix3-profile.md)
- [nix profile diff-closures](command-ref/new-cli/nix3-profile-diff-closures.md)
- [nix profile history](command-ref/new-cli/nix3-profile-history.md)
- [nix profile install](command-ref/new-cli/nix3-profile-install.md)
- [nix profile list](command-ref/new-cli/nix3-profile-list.md)
- [nix profile remove](command-ref/new-cli/nix3-profile-remove.md)
- [nix profile rollback](command-ref/new-cli/nix3-profile-rollback.md)
- [nix profile upgrade](command-ref/new-cli/nix3-profile-upgrade.md)
- [nix profile wipe-history](command-ref/new-cli/nix3-profile-wipe-history.md)
- [nix realisation](command-ref/new-cli/nix3-realisation.md)
- [nix realisation info](command-ref/new-cli/nix3-realisation-info.md)
- [nix registry](command-ref/new-cli/nix3-registry.md)
- [nix registry add](command-ref/new-cli/nix3-registry-add.md)
- [nix registry list](command-ref/new-cli/nix3-registry-list.md)
- [nix registry pin](command-ref/new-cli/nix3-registry-pin.md)
- [nix registry remove](command-ref/new-cli/nix3-registry-remove.md)
- [nix repl](command-ref/new-cli/nix3-repl.md)
- [nix run](command-ref/new-cli/nix3-run.md)
- [nix search](command-ref/new-cli/nix3-search.md)
- [nix shell](command-ref/new-cli/nix3-shell.md)
- [nix store](command-ref/new-cli/nix3-store.md)
- [nix store add-file](command-ref/new-cli/nix3-store-add-file.md)
- [nix store add-path](command-ref/new-cli/nix3-store-add-path.md)
- [nix store cat](command-ref/new-cli/nix3-store-cat.md)
- [nix store copy-log](command-ref/new-cli/nix3-store-copy-log.md)
- [nix store copy-sigs](command-ref/new-cli/nix3-store-copy-sigs.md)
- [nix store delete](command-ref/new-cli/nix3-store-delete.md)
- [nix store diff-closures](command-ref/new-cli/nix3-store-diff-closures.md)
- [nix store dump-path](command-ref/new-cli/nix3-store-dump-path.md)
- [nix store gc](command-ref/new-cli/nix3-store-gc.md)
- [nix store ls](command-ref/new-cli/nix3-store-ls.md)
- [nix store make-content-addressed](command-ref/new-cli/nix3-store-make-content-addressed.md)
- [nix store optimise](command-ref/new-cli/nix3-store-optimise.md)
- [nix store path-from-hash-part](command-ref/new-cli/nix3-store-path-from-hash-part.md)
- [nix store ping](command-ref/new-cli/nix3-store-ping.md)
- [nix store prefetch-file](command-ref/new-cli/nix3-store-prefetch-file.md)
- [nix store repair](command-ref/new-cli/nix3-store-repair.md)
- [nix store sign](command-ref/new-cli/nix3-store-sign.md)
- [nix store verify](command-ref/new-cli/nix3-store-verify.md)
- [nix upgrade-nix](command-ref/new-cli/nix3-upgrade-nix.md)
- [nix why-depends](command-ref/new-cli/nix3-why-depends.md)
- [Files](command-ref/files.md)
- [nix.conf](command-ref/conf-file.md)
- [Profiles](command-ref/files/profiles.md)
- [manifest.nix](command-ref/files/manifest.nix.md)
- [manifest.json](command-ref/files/manifest.json.md)
- [Channels](command-ref/files/channels.md)
- [Default Nix expression](command-ref/files/default-nix-expression.md)
- [Architecture and Design](architecture/architecture.md)
- [File System Object](architecture/file-system-object.md)
- [Protocols](protocols/protocols.md)
- [Serving Tarball Flakes](protocols/tarball-fetcher.md)
- [Derivation "ATerm" file format](protocols/derivation-aterm.md)
- [Glossary](glossary.md)
- [Contributing](contributing/contributing.md)
- [Hacking](contributing/hacking.md)
- [Testing](contributing/testing.md)
- [Experimental Features](contributing/experimental-features.md)
- [CLI guideline](contributing/cli-guideline.md)
- [C++ style guide](contributing/cxx.md)
- [Release Notes](release-notes/release-notes.md)
- [Upcoming release](release-notes/rl-next.md)
- [Release 2.18 (2023-09-20)](release-notes/rl-2.18.md)
- [Release 2.17 (2023-07-24)](release-notes/rl-2.17.md)
- [Release 2.16 (2023-05-31)](release-notes/rl-2.16.md)
- [Release 2.15 (2023-04-11)](release-notes/rl-2.15.md)
- [Release 2.14 (2023-02-28)](release-notes/rl-2.14.md)
- [Release 2.13 (2023-01-17)](release-notes/rl-2.13.md)
- [Release 2.12 (2022-12-06)](release-notes/rl-2.12.md)
- [Release 2.11 (2022-08-25)](release-notes/rl-2.11.md)
- [Release 2.10 (2022-07-11)](release-notes/rl-2.10.md)
- [Release 2.9 (2022-05-30)](release-notes/rl-2.9.md)
- [Release 2.8 (2022-04-19)](release-notes/rl-2.8.md)
- [Release 2.7 (2022-03-07)](release-notes/rl-2.7.md)
- [Release 2.6 (2022-01-24)](release-notes/rl-2.6.md)
- [Release 2.5 (2021-12-13)](release-notes/rl-2.5.md)
- [Release 2.4 (2021-11-01)](release-notes/rl-2.4.md)
- [Release 2.3 (2019-09-04)](release-notes/rl-2.3.md)
- [Release 2.2 (2019-01-11)](release-notes/rl-2.2.md)
- [Release 2.1 (2018-09-02)](release-notes/rl-2.1.md)
- [Release 2.0 (2018-02-22)](release-notes/rl-2.0.md)
- [Release 1.11.10 (2017-06-12)](release-notes/rl-1.11.10.md)
- [Release 1.11 (2016-01-19)](release-notes/rl-1.11.md)
- [Release 1.10 (2015-09-03)](release-notes/rl-1.10.md)
- [Release 1.9 (2015-06-12)](release-notes/rl-1.9.md)
- [Release 1.8 (2014-12-14)](release-notes/rl-1.8.md)
- [Release 1.7 (2014-04-11)](release-notes/rl-1.7.md)
- [Release 1.6.1 (2013-10-28)](release-notes/rl-1.6.1.md)
- [Release 1.6 (2013-09-10)](release-notes/rl-1.6.md)
- [Release 1.5.2 (2013-05-13)](release-notes/rl-1.5.2.md)
- [Release 1.5 (2013-02-27)](release-notes/rl-1.5.md)
- [Release 1.4 (2013-02-26)](release-notes/rl-1.4.md)
- [Release 1.3 (2013-01-04)](release-notes/rl-1.3.md)
- [Release 1.2 (2012-12-06)](release-notes/rl-1.2.md)
- [Release 1.1 (2012-07-18)](release-notes/rl-1.1.md)
- [Release 1.0 (2012-05-11)](release-notes/rl-1.0.md)
- [Release 0.16 (2010-08-17)](release-notes/rl-0.16.md)
- [Release 0.15 (2010-03-17)](release-notes/rl-0.15.md)
- [Release 0.14 (2010-02-04)](release-notes/rl-0.14.md)
- [Release 0.13 (2009-11-05)](release-notes/rl-0.13.md)
- [Release 0.12 (2008-11-20)](release-notes/rl-0.12.md)
- [Release 0.11 (2007-12-31)](release-notes/rl-0.11.md)
- [Release 0.10.1 (2006-10-11)](release-notes/rl-0.10.1.md)
- [Release 0.10 (2006-10-06)](release-notes/rl-0.10.md)
- [Release 0.9.2 (2005-09-21)](release-notes/rl-0.9.2.md)
- [Release 0.9.1 (2005-09-20)](release-notes/rl-0.9.1.md)
- [Release 0.9 (2005-09-16)](release-notes/rl-0.9.md)
- [Release 0.8.1 (2005-04-13)](release-notes/rl-0.8.1.md)
- [Release 0.8 (2005-04-11)](release-notes/rl-0.8.md)
- [Release 0.7 (2005-01-12)](release-notes/rl-0.7.md)
- [Release 0.6 (2004-11-14)](release-notes/rl-0.6.md)
- [Release 0.5 and earlier](release-notes/rl-0.5.md)

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@ -1,29 +0,0 @@
# redirect rules for paths (server-side) to prevent link rot.
# see ./redirects.js for redirects based on URL fragments (client-side)
#
# concrete user story this supports:
# - user finds URL to the manual for Nix x.y
# - Nix x.z (z > y) is the most recent release
# - updating the version in the URL will show the right thing
#
# format documentation:
# - https://docs.netlify.com/routing/redirects/#syntax-for-the-redirects-file
# - https://docs.netlify.com/routing/redirects/redirect-options/
#
# conventions:
# - always force (<CODE>!) since this allows re-using file names
# - group related paths to ease readability
# - always append new redirects to the end of the file
# - redirects that should have been there but are missing can be inserted where they belong
/expressions/expression-language /language/ 301!
/expressions/language-values /language/values 301!
/expressions/language-constructs /language/constructs 301!
/expressions/language-operators /language/operators 301!
/expressions/* /language/:splat 301!
/package-management/basic-package-mgmt /command-ref/nix-env 301!
/package-management/channels* /command-ref/nix-channel 301!
/package-management/s3-substituter* /command-ref/new-cli/nix3-help-stores#s3-binary-cache-store 301!

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@ -1 +0,0 @@
This section lists advanced topics related to builds and builds performance

View file

@ -1,39 +0,0 @@
# Tuning Cores and Jobs
Lix has two relevant settings with regards to how your CPU cores will
be utilized: `cores` and `max-jobs`. This chapter will talk about what
they are, how they interact, and their configuration trade-offs.
- `max-jobs`\
Dictates how many separate derivations will be built at the same
time. If you set this to zero, the local machine will do no
builds. Lix will still substitute from binary caches, and build
remotely if remote builders are configured.
- `cores`\
Suggests how many cores each derivation should use. Similar to
`make -j`.
The `cores` setting determines the value of
`NIX_BUILD_CORES`. `NIX_BUILD_CORES` is equal to `cores`, unless
`cores` equals `0`, in which case `NIX_BUILD_CORES` will be the total
number of cores in the system.
The maximum number of consumed cores is a simple multiplication,
`max-jobs` \* `NIX_BUILD_CORES`.
The balance on how to set these two independent variables depends upon
each builder's workload and hardware. Here are a few example scenarios
on a machine with 24 cores:
| `max-jobs` | `cores` | `NIX_BUILD_CORES` | Maximum Processes | Result |
| --------------------- | ------------------ | ----------------- | ----------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| 1 | 24 | 24 | 24 | One derivation will be built at a time, each one can use 24 cores. Undersold if a job cant use 24 cores. |
| 4 | 6 | 6 | 24 | Four derivations will be built at once, each given access to six cores. |
| 12 | 6 | 6 | 72 | 12 derivations will be built at once, each given access to six cores. This configuration is over-sold. If all 12 derivations being built simultaneously try to use all six cores, the machine's performance will be degraded due to extensive context switching between the 12 builds. |
| 24 | 1 | 1 | 24 | 24 derivations can build at the same time, each using a single core. Never oversold, but derivations which require many cores will be very slow to compile. |
| 24 | 0 | 24 | 576 | 24 derivations can build at the same time, each using all the available cores of the machine. Very likely to be oversold, and very likely to suffer context switches. |
It is up to the derivations' build script to respect host's requested
cores-per-build by following the value of the `NIX_BUILD_CORES`
environment variable.

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@ -1,123 +0,0 @@
# Verifying Build Reproducibility
You can use Lix's `diff-hook` setting to compare build results. Note
that this hook is only executed if the results differ; it is not used
for determining if the results are the same.
For purposes of demonstration, we'll use the following Nix file,
`deterministic.nix` for testing:
```nix
let
inherit (import <nixpkgs> {}) runCommand;
in {
stable = runCommand "stable" {} ''
touch $out
'';
unstable = runCommand "unstable" {} ''
echo $RANDOM > $out
'';
}
```
Additionally, `nix.conf` contains:
diff-hook = /etc/nix/my-diff-hook
run-diff-hook = true
where `/etc/nix/my-diff-hook` is an executable file containing:
```bash
#!/bin/sh
exec >&2
echo "For derivation $3:"
/run/current-system/sw/bin/diff -r "$1" "$2"
```
The diff hook is executed by the same user and group who ran the build.
However, the diff hook does not have write access to the store path just
built.
# Spot-Checking Build Determinism
Verify a path which already exists in the Nix store by passing `--check`
to the build command.
If the build passes and is deterministic, Lix will exit with a status
code of 0:
```console
$ nix-build ./deterministic.nix --attr stable
this derivation will be built:
/nix/store/z98fasz2jqy9gs0xbvdj939p27jwda38-stable.drv
building '/nix/store/z98fasz2jqy9gs0xbvdj939p27jwda38-stable.drv'...
/nix/store/yyxlzw3vqaas7wfp04g0b1xg51f2czgq-stable
$ nix-build ./deterministic.nix --attr stable --check
checking outputs of '/nix/store/z98fasz2jqy9gs0xbvdj939p27jwda38-stable.drv'...
/nix/store/yyxlzw3vqaas7wfp04g0b1xg51f2czgq-stable
```
If the build is not deterministic, Lix will exit with a status code of
1:
```console
$ nix-build ./deterministic.nix --attr unstable
this derivation will be built:
/nix/store/cgl13lbj1w368r5z8gywipl1ifli7dhk-unstable.drv
building '/nix/store/cgl13lbj1w368r5z8gywipl1ifli7dhk-unstable.drv'...
/nix/store/krpqk0l9ib0ibi1d2w52z293zw455cap-unstable
$ nix-build ./deterministic.nix --attr unstable --check
checking outputs of '/nix/store/cgl13lbj1w368r5z8gywipl1ifli7dhk-unstable.drv'...
error: derivation '/nix/store/cgl13lbj1w368r5z8gywipl1ifli7dhk-unstable.drv' may
not be deterministic: output '/nix/store/krpqk0l9ib0ibi1d2w52z293zw455cap-unstable' differs
```
In the Lix daemon's log, we will now see:
```
For derivation /nix/store/cgl13lbj1w368r5z8gywipl1ifli7dhk-unstable.drv:
1c1
< 8108
---
> 30204
```
Using `--check` with `--keep-failed` will cause Lix to keep the second
build's output in a special, `.check` path:
```console
$ nix-build ./deterministic.nix --attr unstable --check --keep-failed
checking outputs of '/nix/store/cgl13lbj1w368r5z8gywipl1ifli7dhk-unstable.drv'...
note: keeping build directory '/tmp/nix-build-unstable.drv-0'
error: derivation '/nix/store/cgl13lbj1w368r5z8gywipl1ifli7dhk-unstable.drv' may
not be deterministic: output '/nix/store/krpqk0l9ib0ibi1d2w52z293zw455cap-unstable' differs
from '/nix/store/krpqk0l9ib0ibi1d2w52z293zw455cap-unstable.check'
```
In particular, notice the
`/nix/store/krpqk0l9ib0ibi1d2w52z293zw455cap-unstable.check` output. Lix
has copied the build results to that directory where you can examine it.
> []{#check-dirs-are-unregistered} **Note**
>
> Check paths are not protected against garbage collection, and this
> path will be deleted on the next garbage collection.
>
> The path is guaranteed to be alive for the duration of
> the `diff-hook`'s execution, but may be deleted any time after.
>
> If the comparison is performed as part of automated tooling, please
> use the diff-hook or author your tooling to handle the case where the
> build was not deterministic and also a check path does not exist.
`--check` is only usable if the derivation has been built on the system
already. If the derivation has not been built Lix will fail with the
error:
error: some outputs of '/nix/store/hzi1h60z2qf0nb85iwnpvrai3j2w7rr6-unstable.drv'
are not valid, so checking is not possible
Run the build without `--check`, and then try with `--check` again.

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