Commit graph

2122 commits

Author SHA1 Message Date
jade 58ff8960cd doc: add a script to upload the nightly manual manually
This is not like, perfect, since it is a manual operation, but we can
automate it in the future. rclone is used, since it seems like awscli is
not (obviously at least?) able to sync directories such that old things
are deleted, and rclone does this thing properly.

Fixes: lix-project/meta#2
Change-Id: Ia6a46d861342a6d29b22f981ba4e35e79f79e60e
2024-05-14 14:28:01 -07:00
alois31 914b0febf7
libutil: remove the interrupt-blocking code
The interrupt-blocking code was originally introduced 20 years ago so that
trying to log an error message does not result in an interrupt exception being
thrown and then going unhandled (c8d3882cdc).
However, the logging code does not check for interrupts any more
(054be50257), so this reasoning is no longer
applicable. Delete this code so that later interrupts are unblocked again, for
example in the next line entered into the repl.

Closes: #296
Change-Id: I48253f5f4272e75001148c13046e709ef5427fbd
2024-05-13 09:03:53 +02:00
Qyriad b9be46fb31 remove the autoconf+Make buildsystem
We're not using it anymore. Any leftover bugs in the Meson buildsystem
are now just bugs.

Closes #249.

Change-Id: I0465a0c37ae819f94d40e7829f5bff046aa63d73
2024-05-07 17:04:30 -06:00
jade 748d8310fa Fix the pages in the manual for Lix
This doesn't comprehensively fix everything outdated in the manual, or
make the manual greatly better, but it does note down where at least
jade noticed it was wrong, and it does fix all the instances of
referencing Nix to conform to the style guide to the best of our
ability.

A lot of things have been commented out for being wrong, and there are
three types of FIXME introduced:

- FIXME(Lix): generically Lix needs to fix it
- FIXME(Qyriad): re #215
- FIXME(meson): docs got outdated by meson changes and need rewriting

I did fix a bunch of it that I could, but there could certainly be
mistakes and this is definitely just an incremental improvement.

Fixes: #266
Change-Id: I5993c4603d7f026a887089fce77db08394362135
2024-05-05 16:11:01 -07:00
eldritch horrors 6a5f100b8b doc: fix build littering doc/
mdbook has the unfortunate habit of creating stub files for chapters it
can't find on disk. turn off this helpful feature as it masks errors in
the summary file, and fix a recently introduced instance of this error.

Change-Id: I10d86aac0489c9c494bd5c8a50047415f4d4b18d
2024-05-05 16:13:27 +00:00
Maximilian Bosch 799d0132f0 Merge "Revert "Revert "Merge pull request #6621 from Kha/nested-follows""" into main 2024-05-04 08:52:29 +00:00
Maximilian Bosch 79d0ae6670 Merge "libstore/local-derivation-goal: prohibit creating setuid/setgid binaries" into main 2024-05-04 07:26:15 +00:00
Maximilian Bosch 0e38720502 Revert "Revert "Merge pull request #6621 from Kha/nested-follows""
This reverts commit a8b3d777fb.

This undoes the revert of PR#6621, which allows nested `follows`, i.e.

    {
      inputs = {
        foo.url = "github:bar/foo";
        foo.inputs.bar.inputs.nixpkgs = "nixpkgs";
      };
    }

does the expected thing now. 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.

This was in fact part of Nix before and the C++ changes applied w/o
conflicts. However, it got reverted then because people didn't want to
merge lazy-trees against it which was supposed to be merged soon back in
October 2022.

Fixes: #201

Change-Id: I5ddef914135b695717b2ef88862d57ced5e7aa3c
2024-05-03 22:54:38 +00:00
Maximilian Bosch 045ee37438 libstore/local-derivation-goal: prohibit creating setuid/setgid binaries
With Linux kernel >=6.6 & glibc 2.39 a `fchmodat2(2)` is available that
isn't filtered away by the libseccomp sandbox.

Being able to use this to bypass that restriction has surprising results
for some builds such as lxc[1]:

> With kernel ≥6.6 and glibc 2.39, lxc's install phase uses fchmodat2,
> which slips through 9b88e52846/src/libstore/build/local-derivation-goal.cc (L1650-L1663).
> The fixupPhase then uses fchmodat, which fails.
> With older kernel or glibc, setting the suid bit fails in the
> install phase, which is not treated as fatal, and then the
> fixup phase does not try to set it again.

Please note that there are still ways to bypass this sandbox[2] and this is
mostly a fix for the breaking builds.

This change works by creating a syscall filter for the `fchmodat2`
syscall (number 452 on most systems). The problem is that glibc 2.39
is needed to have the correct syscall number available via
`__NR_fchmodat2` / `__SNR_fchmodat2`, but this flake is still on
nixpkgs 23.11. To have this change everywhere and not dependent on the
glibc this package is built against, I added a header
"fchmodat2-compat.hh" that sets the syscall number based on the
architecture. On most platforms its 452 according to glibc with a few
exceptions:

    $ rg --pcre2 'define __NR_fchmodat2 (?!452)'
    sysdeps/unix/sysv/linux/x86_64/x32/arch-syscall.h
    58:#define __NR_fchmodat2 1073742276

    sysdeps/unix/sysv/linux/mips/mips64/n32/arch-syscall.h
    67:#define __NR_fchmodat2 6452

    sysdeps/unix/sysv/linux/mips/mips64/n64/arch-syscall.h
    62:#define __NR_fchmodat2 5452

    sysdeps/unix/sysv/linux/mips/mips32/arch-syscall.h
    70:#define __NR_fchmodat2 4452

    sysdeps/unix/sysv/linux/alpha/arch-syscall.h
    59:#define __NR_fchmodat2 562

I added a small regression-test to the setuid integration-test that
attempts to set the suid bit on a file using the fchmodat2 syscall.
I confirmed that the test fails without the change in
local-derivation-goal.

Additionally, we require libseccomp 2.5.5 or greater now: as it turns
out, libseccomp maintains an internal syscall table and
validates each rule against it. This means that when using libseccomp
2.5.4 or older, one may pass `452` as syscall number against it, but
since it doesn't exist in the internal structure, `libseccomp` will refuse
to create a filter for that. This happens with nixpkgs-23.11, i.e. on
stable NixOS and when building Lix against the project's flake.

To work around that

* a backport of libseccomp 2.5.5 on upstream nixpkgs has been
  scheduled[3].

* the package now uses libseccomp 2.5.5 on its own already. This is to
  provide a quick fix since the correct fix for 23.11 is still a staging cycle
  away.

We still need the compat header though since `SCMP_SYS(fchmodat2)`
internally transforms this into `__SNR_fchmodat2` which points to
`__NR_fchmodat2` from glibc 2.39, so it wouldn't build on glibc 2.38.
The updated syscall table from libseccomp 2.5.5 is NOT used for that
step, but used later, so we need both, our compat header and their
syscall table 🤷

Relevant PRs in CppNix:

* https://github.com/NixOS/nix/pull/10591
* https://github.com/NixOS/nix/pull/10501

[1] https://github.com/NixOS/nixpkgs/issues/300635#issuecomment-2031073804
[2] https://github.com/NixOS/nixpkgs/issues/300635#issuecomment-2030844251
[3] https://github.com/NixOS/nixpkgs/pull/306070

(cherry picked from commit ba6804518772e6afb403dd55478365d4b863c854)
Change-Id: I6921ab5a363188c6bff617750d00bb517276b7fe
2024-05-03 16:29:06 +02:00
Théophane Hufschmitt 8458d98b27 Rename nix show-config to nix config show
Part of #7672

My main motivation is to be able to use `nix.checkConfig`[1]. This
doesn't work with Lix currently since the module uses `nix show-config`
if the Nix version is <2.20pre and `nix config show` otherwise. I think
this is the only instance where nixpkgs checks for which Nix commands
exist that affects us now, so I figured we could just perform the rename
here as well[2] and still provide the current version number[3].

I don't have a strong opinion on whether to deprecate `nix show-config`,
the warning is added there automatically.

(cherry picked from commit f300e11b056dea414d7d77bbc6e5a7dc5d9ddd41)

[1] https://nixos.org/manual/nixos/stable/options.html#opt-nix.checkConfig
[2] I should add that I don't use the "official" ways of installing Lix
    because using the flake directly and callPackaging it seemed to fit
    better into my workflow: I already have a little mess to make
    sure Hydra from the flake uses the correct pkgs.nix and I didn't
    want to complicate it further while keeping a single package-set I
    can build in CI. Don't get me wrong, I think such a module for a
    quick-start is very important, just giving context on why I bother
    in the first place :)
[3] When we go public, I think it's worth considering to add support in
    nixpkgs itself for Lix.

Change-Id: I47b4239b05cbeda3c370d2fa56ea768b768768ac
2024-05-03 16:26:16 +02:00
Qyriad 076dfd30c6 Merge changes from topic "profile-v3" into main
* changes:
  nix3-profile: remove check "name" attr in manifests
  Add profile migration test
  nix3-profile: make element names stable
  getNameFromURL(): Support uppercase characters in attribute names
  nix3-profile: remove indices
  nix3-profile: allow using human-readable names to select packages
  implement parsing human-readable names from URLs
2024-05-02 20:15:48 +00:00
Qyriad e0911eef73 nix3-profile: make element names stable
Based off of commit 6268a45b650f563bae2360e0540920a2959bdd40

Upstream-PR: https://github.com/NixOS/nix/pull/9656
Co-authored-by: Eelco Dolstra <edolstra@gmail.com>
Change-Id: I0fcf069a8537c61ad6fc4eee1f3c193a708ea1c4
2024-05-02 12:59:15 -06:00
Qyriad e98fc952a8 nix3-profile: remove indices
Based off of commit 3187bc9ac3dd193b9329ef68c73ac3cca794ed78

Upstream-PR: https://github.com/NixOS/nix/pull/9656
Co-authored-by: Eelco Dolstra <edolstra@gmail.com>
Change-Id: I8ac4a33314cd1cf9de95404c20f58e883460acc7
2024-05-02 12:02:28 -06:00
Qyriad f88423813f nix3-profile: allow using human-readable names to select packages
These names are parsed from the URL provided for that package

Based off of commit 257b768436a0e8ab7887f9b790c5b92a7fe51ef5

Upstream-PR: https://github.com/NixOS/nix/pull/8678
Co-authored-by: Felix Uhl <felix.uhl@outlook.com>
Change-Id: I76d5f9cfb11d3d2915b3dd1db21d7bb49e91f4fb
2024-05-02 12:02:28 -06:00
Robert Hensing b7ce11c97d Disallow store path names that are . or .. (plus opt. -)
As discussed in the maintainer meeting on 2024-01-29.

Mainly this is to avoid a situation where the name is parsed and
treated as a file name, mostly to protect users.
.-* and ..-* are also considered invalid because they might strip
on that separator to remove versions. Doesn't really work, but that's
what we decided, and I won't argue with it, because .-* probably
doesn't seem to have a real world application anyway.
We do still permit a 1-character name that's just "-", which still
poses a similar risk in such a situation. We can't start disallowing
trailing -, because a non-zero number of users will need it and we've
seen how annoying and painful such a change is.

What matters most is preventing a situation where . or .. can be
injected, and to just get this done.

(cherry picked from commit f1b4663805a9dbcb1ace64ec110092d17c9155e0)
Change-Id: I900a8509933cee662f888c3c76fa8986b0058839
2024-05-02 19:34:38 +02:00
Robert Hensing fae6ae2122 parseStorePath: Support leading period
(cherry picked from commit b13e6a76b4f289c6db69ffaa7bd35b7e44f2a391)
Change-Id: Ie14be437d87d17248f80e1f009aa2a4311ddede6
2024-05-02 19:34:03 +02:00
Qyriad ee5a1b5a4c nix3-upgrade-nix: allow manually specifying new nix
This allows manually specifying a store path for the new Nix that
gets linked into Nix's profile.

Change-Id: Ib71711ffb466febf4a6892e3fdbda644e053770d
2024-04-29 01:19:21 +00:00
Qyriad aae12f5848 fix nix upgrade-nix on new-style profiles
nix3-profile automatically migrates any profile its used on to its style
of profile -- the ones with manifest.json instead of manifest.nix. On
non-NixOS systems, Nix is conventionally installed to the profile at
/nix/var/nix/profiles/default, so if a user passed that to `--profile`
of `nix profile`, then it would break upgrade-nix from ever working
again, without recreating the profile.

This commit fixes that, and allows upgrade-nix to work on either kind of
profile.

Fixes #16.

Change-Id: I4c49b1beba93bb50e8f8a107edc451affe08c3f7
2024-04-29 01:19:21 +00:00
Qyriad 78ce710722 docs(nix-env): summarize of each subcommand in --help
This should have been there from the beginning. As much as nix-env is a
pile of problems we don't need trivial docs papercuts like this adding
to it.

Change-Id: I0c53e4b146af2fefdd0e4743d850672729cb2194
2024-04-26 21:56:08 -06:00
Qyriad b913a939b0 meson: flip the switch!!
This commit makes Meson the default buildsystem for Lix.
The Make buildsystem is now deprecated and will be removed soon, but has
not yet, which will be done in a later commit when all seems good. The
mesonBuild jobs have been removed, and have not been replaced with
equivalent jobs to ensure the Make buildsystem still works.

The full, new commands in a development shell are:

$ meson setup ./build "--prefix=$out" $mesonFlags

(A simple `meson setup ./build` will also build, but will do a different
thing, not having the settings from package.nix applied.)

$ meson compile -C build
$ meson test -C build --suite=check
$ meson install -C build
$ meson test -C build --suite=installcheck

(Check and installcheck may both be done after install, allowing you to
omit the --suite argument entirely, but this is the order package.nix
runs them in.)

If tests fail and Meson helpfully has no output for why, use the
`--print-error-logs` option to `meson test`. Why this is not the default
I cannot explain.

If you change a setting in the buildsystem, most cases will
automatically regenerate the Meson configuration, but some cases, like
trying to build a specific target whose name is new to the buildsystem
(e.g. `meson compile -C build src/libmelt/libmelt.dylib`, when
`libmelt.dylib` did not exist as a target the last time the buildsystem
was generated), then you can reconfigure using new settings but
existing options, and only recompiling stuff affected by the changes:

$ meson setup --reconfigure build

Note that changes to the default values in `meson.options` or in the
`default_options :` argument to project() are NOT propagated with
`--reconfigure`.

If you want a totally clean build, you can use:

$ meson setup --wipe build

That will work regardless of if `./build` exists or not.

Specific, named targets may be addressed in
`meson build -C build <target>` with the "target ID" if there is one,
which is the first string argument passed to target functions that
have one, and unrelated to the variable name, e.g.:

libexpr_dylib = library('nixexpr', …)

can be addressed with:

$ meson compile -C build nixexpr

All targets may be addressed as their output, relative to the build
directory, e.g.:

$ meson compile -C build src/libexpr/libnixexpr.so

But Meson does not consider intermediate files like object files
targets. To build a specific object file, use Ninja directly and
specify the output file relative to the build directory:

$ ninja -C build src/libexpr/libnixexpr.so.p/nixexpr.cc.o

To inspect the canonical source of truth on what the state of the
buildsystem configuration is, use:

$ meson introspect

Have fun!

Change-Id: Ia3e7b1e6fae26daf3162e655b4ded611a5cd57ad
2024-04-22 21:41:58 -06:00
Qyriad cf0744ceed Merge "build internal API docs with Meson" into main 2024-04-17 21:48:25 +00:00
Qyriad b81eec6ed5 build internal API docs with Meson
This commit adds the capability for building the Doxygen internal API
docs in the Meson buildsystem, and also makes doing so the default for
the internal-api-docs hydra job. Aside from the /nix-support directory,
which differed only by the hash part of a store path, the outputs of
hydraJobs.internal-api-docs before and after this commit were
bit-for-bit identical on my machine.

Change-Id: I98f0017891c25b06866c15f7652fe74f706ec8e1
2024-04-15 19:05:07 -06:00
eldritch horrors adab839c98 manual: build docs with dummy envs
this was previously used because the macOS docs build would otherwise
pull files out of the host nix store. or something. not sure about it

Change-Id: I76b51eac1ebc5de5f00e2e4be086dd8db3eeb8e6
2024-04-11 13:36:04 +00:00
eldritch horrors 725f5cd358 docs: redo content generation for mdbook and manual
manpages can be rendered using the markdown output of mdbook, the rest
of the manual can generated out of the main doc/manual source tree. we
still use lowdown to actually render manpages instead of eg mdbook-man
because lowdown does generate reasonably good manpages (though that is
also somewhat debatable, but they're a lot better than mdbook-man).

doing this not only lets us drastically simplify the lowdown pipeline,
but also remove all custom {{#include}} handling since now mdbook does
all of it, even for the manpage builds. even the lowdown wrapper isn't
entirely necessary because lowdown can take all wrapper arguments with
command line flags rather than bits of input file content.

This also implements running mdbook in Meson, in order to generate the
manpages. The mdbook outputs are also installed in the usual location.

Co-authored-by: Qyriad <qyriad@qyriad.me>

Change-Id: I60193f9fd0f15d48872f071af35855cda2a0f40b
2024-04-11 13:32:06 +00:00
Rebecca Turner 99845e0e01 Merge "Print top-level errors normally in nix repl" into main 2024-04-10 15:40:03 +00:00
Qyriad 723ddadf92 docs: generalize manpage generation script as json-to-tree.py
This should be capable of replacing every invocation of
nix eval --write-to.

Change-Id: I60387bc9b0fc54a91244eddb639beaa64d705878
2024-04-10 15:04:34 +02:00
Rebecca Turner 9e7e927837 Print top-level errors normally in nix repl
Previously, errors while printing values in `nix repl` would be printed
in `«error: ...»` brackets rather than displayed normally:

```
nix-repl> legacyPackages.aarch64-darwin.pythonPackages.APScheduler
«error: Package ‘python-2.7.18.7’ in /nix/store/6s0m1qc31zw3l3kq0q4wd5cp3lqpkq0q-source/pkgs/development/interpreters/python/cpython/2.7/default.nix:335 is marked as insecure, refusing to evaluate.»
```

Now, errors will be displayed normally if they're emitted at the
top-level of an expression:

```
nix-repl> legacyPackages.aarch64-darwin.pythonPackages.APScheduler
error:
       … in the condition of the assert statement
         at /nix/store/6s0m1qc31zw3l3kq0q4wd5cp3lqpkq0q-source/lib/customisation.nix:268:17:
          267|     in commonAttrs // {
          268|       drvPath = assert condition; drv.drvPath;
             |                 ^
          269|       outPath = assert condition; drv.outPath;

       … in the left operand of the OR (||) operator
         at /nix/store/6s0m1qc31zw3l3kq0q4wd5cp3lqpkq0q-source/pkgs/development/interpreters/python/passthrufun.nix:28:45:
           27|         if lib.isDerivation value then
           28|           lib.extendDerivation (valid value || throw "${name} should use `buildPythonPackage` or `toPythonModule` if it is to be part of the Python packages set.") {} value
             |                                             ^
           29|         else

       (stack trace truncated; use '--show-trace' to show the full trace)

       error: Package ‘python-2.7.18.7’ in /nix/store/6s0m1qc31zw3l3kq0q4wd5cp3lqpkq0q-source/pkgs/development/interpreters/python/cpython/2.7/default.nix:335 is marked as insecure, refusing to evaluate.
```

Errors emitted in nested structures (like e.g. when printing `nixpkgs`)
will still be printed in brackets.

Change-Id: I25aeddf08c017582718cb9772a677bf51b9fc2ad
2024-04-09 08:34:40 -07:00
Rebecca Turner a95c62673b Merge "Add repl-overlays" into main 2024-04-09 05:29:48 +00:00
eldritch horrors e6aab36d60 docs: put the manual build into a known tmpdir
this isn't strictly necessary, but it'll make it a lot easier to put the
generated files used by the autoconf build system in this directory too.
doing this now already will make the meson transition a lot easier later

Change-Id: I5fb39eade2ff88b6093c9ee436c9e8db793e9448
2024-04-09 02:09:36 +00:00
eldritch horrors c1ae35d34a docs: don't compute SUMMARY.md during build
this would make meson build compatibility unnecessarily hard and
the cli does not change often enough to justify this complexity.

Change-Id: I17b1870cdf8538feeaa01a9945db97af2175a642
2024-04-09 02:09:36 +00:00
eldritch horrors d9bc197ff4 docs: don't compute rl-next.md during build
not sure why this was done the way it was considering that includes are
a feature the doc toolchain had previously. let's just always have some
kind of entry for the upcoming release in the dev manual builds even if
that means having a completely empty release notes chapter.

the release notes generation script isn't entirely functional right now
due to pre-commit hooks, but it's good enough for time being. we need a
better release process for notes anyway.

Change-Id: Ifda6912cf5233db013f72a30247a62d6f22b1565

Change-Id: I9eb347ec4aabc5be2b816ff0fd3e4be45f93b934
2024-04-09 02:09:36 +00:00
eldritch horrors 07ef9f9f5d docs: skip do custom include processing for mdbook
mdbook already does include processing of its own, and the custom
processing code has always admitted as much. we don't need it for
the mdbook build at this point if we run our preprocessors in the
right order, and maybe we can even have mdbook to return complete
pages to us that we only have to pass to lowdown without any more
preprocessing of our own.

Change-Id: Icd978acbc3b1e215fee8f062c53ab2cb2a222ab1
2024-04-09 02:09:36 +00:00
eldritch horrors 14088e1ec5 docs: remove many link-to-self
for some reason these three were anchors, not links, but had they been
links they wouldn't've worked because they're not defined anywhere but
here. in the print version of the manual they're duplicated many times
over (creating id collisions), so we should better remove them anyway.

Change-Id: I8988a7c32c812dee0f0b6d4953faa7cd1255228d
2024-04-09 02:09:36 +00:00
Rebecca Turner 727b43478c Add repl-overlays
Adds a `repl-overlays` option, 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`:

    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}`:

    $ 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»

Change-Id: Ic12e0f2f210b2f46e920c33088dfe1083f42391a
2024-04-08 17:11:47 -07:00
jade 0d37b99a15 build: enable libstdc++ assertions
Benchmarks say that it does not regress performance by more than 1%
(which is where it gets really hard to measure accurately anyhow).

Meson appears to be planning to do this for us without asking us in a
release we will get in the future, and it seems good enough to ship
today:
https://mesonbuild.com/Release-notes-for-1-4-0.html#ndebug-setting-now-controls-c-stdlib-assertions

Benchmarks:

| Command | Mean [ms] | Min [ms] | Max [ms] | Relative |
|:---|---:|---:|---:|---:|
| `result-asserts/bin/nix --extra-experimental-features 'nix-command flakes' eval -f ../nixpkgs/pkgs/development/haskell-modules/hackage-packages.nix` | 418.4 ± 25.0 | 396.9 | 451.2 | 1.01 ± 0.08 |
| `result/bin/nix --extra-experimental-features 'nix-command flakes' eval -f ../nixpkgs/pkgs/development/haskell-modules/hackage-packages.nix` | 416.1 ± 23.9 | 397.1 | 445.4 | 1.00 |

| Command | Mean [s] | Min [s] | Max [s] | Relative |
|:---|---:|---:|---:|---:|
| `GC_INITIAL_HEAP_SIZE=10g result-asserts/bin/nix eval --extra-experimental-features 'nix-command flakes' --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'` | 4.147 ± 0.021 | 4.123 | 4.195 | 1.00 |
| `GC_INITIAL_HEAP_SIZE=10g result/bin/nix eval --extra-experimental-features 'nix-command flakes' --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'` | 4.149 ± 0.027 | 4.126 | 4.215 | 1.00 ± 0.01 |

| Command | Mean [s] | Min [s] | Max [s] | Relative |
|:---|---:|---:|---:|---:|
| `result-asserts/bin/nix --extra-experimental-features 'nix-command flakes' eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'` | 5.838 ± 0.023 | 5.799 | 5.867 | 1.01 ± 0.01 |
| `result/bin/nix --extra-experimental-features 'nix-command flakes' eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'` | 5.788 ± 0.044 | 5.715 | 5.876 | 1.00 |

| Command | Mean [s] | Min [s] | Max [s] | Relative |
|:---|---:|---:|---:|---:|
| `result-asserts/bin/nix --extra-experimental-features 'nix-command flakes' search --no-eval-cache github:nixos/nixpkgs/e1fa12d4f6c6fe19ccb59cac54b5b3f25e160870 hello` | 15.993 ± 0.081 | 15.829 | 16.096 | 1.01 ± 0.01 |
| `result/bin/nix --extra-experimental-features 'nix-command flakes' search --no-eval-cache github:nixos/nixpkgs/e1fa12d4f6c6fe19ccb59cac54b5b3f25e160870 hello` | 15.897 ± 0.075 | 15.807 | 16.047 | 1.00 |

Fixes: #4

Change-Id: Id3a6f38274ba94d5d10b09edd19dfd96bc3e7d5f
2024-04-08 15:40:12 -07:00
Rebecca Turner cfbcf12276 Format Nix code with nixfmt
Change-Id: I61efeb666ff7481c05fcb247168290e86a250151
2024-04-08 13:00:00 -07:00
Qyriad 5bac308c7c meson: fix warm nix3 CLI manual generation
`nix eval --write-to` refuses to write to a directory that exists at
all, so now we generate in a temporary directory, and copy the generated
tree to the build directory. This is equivalent to what the Make
buildsystem did, actually, but hopefully more robust.

Future work: documenting the doc generation architecture in the
top-level meson.build outline comment.

Change-Id: Ic3eb6d26e3cc249a1c042fd3ced22d637ac66a69
2024-04-06 14:43:14 -06:00
Qyriad a4ef195a9f always re-eval cached failures
This is terrible UX, and frankly an eval failure should be a cache
invalidation anyway.

This removes the CachedEvalError type entirely.

Fixes #223.

Change-Id: I91f8003eabd0ea45003024e96d1de3c7ae8e49d8
2024-04-06 04:35:25 +00:00
Qyriad c355354772 docs: replace sed invocation with an mdbook preprocessor for @docroot@
We're not entirely clear on why the links preprocessor has to be done
*before* rather than after, but we assume it is probably that as a
builtin preprocessor it does some processing on the raw book source,
and not just the JSON data.

Also a real use for Python pattern matching? I know I was surprised too.

Change-Id: Ibe8b59e7b5bd5f357a655d8b4c5f0b0f58a67d6b
2024-04-04 21:43:19 +00:00
Qyriad 9166babbaf Revert "meson: move nix3 manpage generation into command-ref/"
This reverts commit 70954233743a233744787103d3211237a28ddbca.

This seems to have broken running ninja on warm build directories, which
is not what we want. Reverted until we figure out something better

Change-Id: I9623ae078917e7c59a930bf8044a216501d4bb20
2024-04-04 11:59:08 -06:00
Qyriad c263554ec6 Merge "meson: move nix3 manpage generation into command-ref/" into main 2024-04-03 21:34:27 +00:00
Qyriad c96c5db030 meson: move nix3 manpage generation into command-ref/
This puts the generated files where they are for the make system.
This is in preparation for further meson-mdbook stuff.

Change-Id: I934df6854a80af5ccf381cf1da0bda0187a8bcfc
2024-04-03 13:52:56 -06:00
Lunaphied 7a1054fa5f repl: improve :doc builtin repl command to support lambdas.
For a long time `nix repl` has supported displaying documentation set on
builtins, however, it has long been convention to use Markdown comments
on Nix functions themselves for documentation. This exposes that
information to `nix repl` users in a nice and formatted way.

NixOS/rfcs#145 doc-comments are primarily what this feature is intended
to consume, however, support for lambda documentation in the repl is
experimental. We do our best effort to support the RFC here.

These changes are based on [the nix-doc library](https://github.com/lf-/nix-doc) and
are licensed under the terms described in the relevant source files.

Change-Id: Ic6fe947d39a22540705d890737e336c4720b0a22
2024-04-03 13:47:22 -06:00
eldritch horrors d2aca15f31 doc: remove the -- unescaping hack
lowdown has an option to disable this behavior. use it.

Change-Id: I06d4201b7f528021ddb8e94ac6baff385402e080
2024-04-01 20:15:28 +00:00
Théophane Hufschmitt 6c29016a09 Merge pull request #9920 from 9999years/forbid-nested-debuggers
Forbid nested debuggers

(cherry picked from commit e164b39ee90fd655dbb7f479fdd4fbe38cc883bd)
Change-Id: Iff62f40fd251116516a63e2d3f9fb5b21480b16d
2024-03-31 17:28:25 +00:00
Rebecca Turner 4b730f328e Merge "Add pre-commit checks" into main 2024-03-30 22:26:59 +00:00
eldritch horrors 351c1a9c52 meson: build and install nix3 manpages
this notably does *not* install the `nix3-manpages` manpage the old
system generated, mostly because that page was empty and just a bug
with a coat of documentation paint.

Change-Id: I7a4248a72e7bb5e0cc925a6311a33b6b72589569
2024-03-30 14:26:47 +00:00
eldritch horrors bfbcc3352b meson: add manpages for old cli and config files
Change-Id: I93384ec774d1945a649f6aaf7cd967c3fb7197f9
2024-03-30 14:26:47 +00:00
eldritch horrors 65d544b1a6 build: extract make "functions" into scripts
we'll want to use these for the meson builds, and probably eventually
rewrite them in something that isn't plain shell. diffoscope confirms
that out/share and doc/share are equal before and after these changes

Change-Id: I49aa418fc8615cad86d67328e08c28a7405ec952
2024-03-30 14:26:47 +00:00
Rebecca Turner 2a98ba8b97 Add pre-commit checks
The big ones here are `trim-trailing-whitespace` and `end-of-file-fixer`
(which makes sure that every file ends with exactly one newline
character).

Change-Id: Idca73b640883188f068f9903e013cf0d82aa1123
2024-03-29 22:57:40 -07:00
Winter Cute 80405d0626 Stop vendoring toml11
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).

Closes #164

Change-Id: Ied071c841fc30b0dfb575151afd1e7f66970fdb9
2024-03-27 21:04:00 -04:00
jade 412a9c9f67 Enable clang build timing analysis
I didn't enable this by default for clang due to making the build time
10% worse or so. Unfortunate, but tbh devs for whom 10% of build time is
not *that* bad should probably simply enable this.

Change-Id: I8d1e5b6f3f76c649a4e2f115f534f7f97cee46e6
2024-03-27 03:52:57 +00:00
eldritch horrors 279e30e7ef build: replace changelog-d with local script
hacking changelog-d to support not just github but also forgejo and
gerrit is a lot more complicated than it's worth, even moreso since
the entire thing can just as well be done with ~60 lines of python.
this new script is also much cheaper to instantiate (being python),
so having it enabled in all shells is far less of a hassle.

we've also adjusted existing release notes that referenced a gerrit
cl to auto-link to the cl in question, making the diff a bit bigger

closes #176

Change-Id: I8ba7dd0070aad9ba4474401731215fcf5d9d2130
2024-03-27 03:09:14 +00:00
eldritch horrors 8fd02df90d manual: fix release notes
fix key spelling errors, type errors, things-should-not-be-comments errors

Change-Id: I3ce12873aa78002bca686bd88404771895b05d30
2024-03-27 03:09:14 +00:00
Théophane Hufschmitt 86881226b0 Merge pull request #8817 from iFreilicht/flake-update-lock-overhaul
Overhaul `nix flake update` and `nix flake lock` UX

(cherry picked from commit 12a0ae73dbb37becefa5a442eb4532ff0de9ce65)
Change-Id: Iff3b4f4235ebb1948ec612036b39ab29e4ca22b2
2024-03-25 17:36:24 -06:00
Lunaphied 185ecf1f45 Improve new CLI UX by supporting short -E flag for --expr
Change-Id: I55881c846da8416a92a14deedfa5bbbf09a122fb
2024-03-24 21:17:51 -06:00
jade 5a28d70d1e Merge "un-ups your start" into main 2024-03-19 14:29:57 -06:00
jade 985bd5eb9f un-ups your start
We do not need upstart, it is so thoroughly obsolete that we should not
care about supporting it.

Change-Id: Ie0ca084740845555fddffacc899cd129c9a4c1fe
2024-03-18 18:28:08 -07:00
jade 20b4a97af3 Release notes for builtins.nixVersion change
Change-Id: I72c945cab464d26d73f5594ef0a4bb2184545da4
2024-03-18 18:26:52 -07:00
eldritch horrors 9cf92c012d report inherit attr errors at the duplicate name
previously we reported the error at the beginning of the binding
block (for plain inherits) or the beginning of the attr list (for
inherit-from), effectively hiding where exactly the error happened.

this also carries over to runtime positions of attributes in sets as
reported by unsafeGetAttrPos. we're not worried about this changing
observable eval behavior because it *is* marked unsafe, and the new
behavior is much more useful.

(cherry picked from commit 1edd6fada53553b89847ac3981ac28025857ca02)
Change-Id: I2f50eb9f3dc3977db4eb3e3da96f1cb37ccd5174
2024-03-18 16:12:45 +01:00
eldritch horrors d826427f02 normalize formal order on ExprLambda::show
we already normalize attr order to lexicographic, doing the same for
formals makes sense. doubly so because the order of formals would
otherwise depend on the context of the expression, which is not quite as
useful as one might expect.

(cherry picked from commit 4147ecfb1c51f3fe3b4adcbd4e753fd487dab645)
Change-Id: I3fd0dbdef3ac7447a3a03ff20bb514a0d0f23fb1
2024-03-18 07:56:34 -06:00
eldritch horrors 11f35afa6f diagnose duplicated attrs at correct path
diagnose attr duplication at the path the duplication was detected, not
at the path the current attribute wanted to place. doing the latter is
only correct if a leaf attribute was duplicated, not if an attrpath was
set to a non-attrset in one binding and a (potentially implied) attrset
in another binding.

fixes #124

Change-Id: Ic4aa9cc12a9874d4e7897c6f64408f10aa36fc82
2024-03-16 22:12:49 +01:00
eldritch horrors b667b4cded evaluate inherit (from) exprs only once per directive
desugaring inherit-from to syntactic duplication of the source expr also
duplicates side effects of the source expr (such as trace calls) and
expensive computations (such as derivationStrict).

(cherry picked from commit cefd0302b55b3360dbca59cfcb4bf6a750d6cdcf)
Change-Id: Iff519f991adef2e51683ba2c552d37a3df7a179e
2024-03-10 03:18:32 -06:00
eldritch horrors f2e11ddce1 Merge pull request #9914 from 9999years/debugger-on-trace
Enter debugger on `builtins.trace` with an option

(cherry picked from commit 774e7ca5847ebc392eac2a124a8f12b24da4f65a)
Change-Id: If01e2110b3a128e639b05143227e365227d149f1
2024-03-09 10:17:26 -07:00
eldritch horrors 7673312ccc Merge pull request #9928 from 9999years/error-messages-in-nix-repl
Improve error printing in `nix repl`

(cherry picked from commit a8050d9b83052e4b5c52bf2d116381aedec3a93e)
Change-Id: I588f92d1dd4c546c98788b71403cc034f5e7129a
2024-03-09 03:37:35 -07:00
eldritch horrors 3e1be9c530 Merge pull request #9917 from 9999years/enter-debugger-more-reliably
Enter debugger more reliably in `let` expressions and function calls

(cherry picked from commit c4ed92fa6f836d3d8eb354a48c37a2f9eeecc3aa)
Change-Id: I16d0cad7e898feecd2399723b92ba8df67222fb4
2024-03-09 03:37:35 -07:00
eldritch horrors 609a8e0d94 Merge pull request #9754 from 9999years/print-value-when-coercion-fails
Print the value in `error: cannot coerce` messages

(cherry picked from commit 5b7bfd2d6b89d7dd5f54c1ca6c8072358d31a84e)

===

test taken from 6e8d5983143ae576e3f4b1d2954a5267f2943a49; it was added
previously (and not backported because its pr was a mostly-revert), but
it's useful to have around.

Change-Id: Icbd14b55e3610ce7b774667bf14b82e6dc717982
2024-03-09 00:05:41 -07:00
eldritch horrors 87e6ac5eb7 Merge pull request #9753 from 9999years/print-value-on-type-error
Print the value in `value is X while a Y is expected` error

(cherry picked from commit 5f72a97092da6af28a7d2b2a50d74e9d34fae7e1)
Change-Id: Idb4bc903ae59a0f5b6fb3b1da4d47970fe0a6efe
2024-03-09 00:05:41 -07:00
eldritch horrors 7e1f8b09a4 Merge pull request #9755 from 9999years/printer-followup
Printer followup

(cherry picked from commit 51f524c629b778b75cb62a9e0c85bae655984abc)
Change-Id: I29214cc86c5e846cbcfec382022293a70011b316
2024-03-09 04:04:46 +01:00
eldritch horrors 512c1f05c3 Unify and refactor value printing
Previously, there were two mostly-identical value printers -- one in
`libexpr/eval.cc` (which didn't force values) and one in
`libcmd/repl.cc` (which did force values and also printed ANSI color
codes).

This PR unifies both of these printers into `print.cc` and provides a
`PrintOptions` struct for controlling the output, which allows for
toggling whether values are forced, whether repeated values are tracked,
and whether ANSI color codes are displayed.

Additionally, `PrintOptions` allows tuning the maximum number of
attributes, list items, and bytes in a string that will be displayed;
this makes it ideal for contexts where printing too much output (e.g.
all of Nixpkgs) is distracting. (As requested by @roberth in
https://github.com/NixOS/nix/pull/9554#issuecomment-1845095735)

Please read the tests for example output.

Future work:
- It would be nice to provide this function as a builtin, perhaps
  `builtins.toStringDebug` -- a printing function that never fails would
  be useful when debugging Nix code.
- It would be nice to support customizing `PrintOptions` members on the
  command line, e.g. `--option to-string-max-attrs 1000`.

(cherry picked from commit 0fa08b451682fb3311fe58112ff05c4fe5bee3a4, )

===

Restore ambiguous value printer for `nix-instantiate`

The Nix team has requested that this output format remain unchanged.
I've added a warning to the man page explaining that `nix-instantiate
--eval` output will not parse correctly in many situations.

(cherry picked from commit df84dd4d8dd3fd6381ac2ca3064432ab31a16b79)

Change-Id: I7cca6b4b53cd0642f2d49af657d5676a8554c9f8
2024-03-09 03:50:06 +01:00
eldritch horrors d76125747f Merge changes I03bbff94,I778edad1,Iaa80073b,Ib1d58fe4 into main
* changes:
  Add release notes
  Print how many checks are run
  Print derivation paths
  Log what `nix flake check` does
2024-03-07 18:48:17 -07:00
eldritch horrors bb7e7711b4 Add release notes
(cherry picked from commit 561a56cd13b4f12e3dfb6c5e3f42e5d8add04ecc)

===

Modified the release notes' synopsis to make it match its contents,
probably a copy-paste.
Co-authored-by: Raito Bezarius <raito@lix.systems>

Change-Id: I03bbff940b93e7df4b6c2fe9159c49a59ed47b55
2024-03-07 12:29:57 -08:00
eldritch horrors 9eb58f5209 Merge pull request #9032 from Ma27/structured-attrs-env-vars
structured attrs: improve support / usage of NIX_ATTRS_{SH,JSON}_FILE

(cherry picked from commit 3c042f3b0b0a7ef9c47bf049f5410dbd4aac9e90)
Change-Id: I7e41838338ee1edf31fff6f9e354c3db2bba6c0e
2024-03-07 10:46:47 +01:00
eldritch horrors e8f1acfb18 Merge pull request #5145 from fedepell/local_doc_build_5140
Docs build: depend on locally built nix executable and not installed one

(cherry picked from commit ca72e3e7e8f69526f028475a7a9b40812da1acdd)

===

includes changes from (because not doing so removes manpages):

Merge pull request #9976 from alois31/restore-manual-pages

Restore manual pages

(cherry picked from commit d3c1997127e0fc08576e842b2bfe046d8a28d2f4)

Change-Id: I685ff16163ac552a1754570c03c992c63a461d50
2024-03-05 23:01:05 +01:00
eldritch horrors 5bda6d9dc8 Merge pull request #9915 from 9999years/evaluating-attribute-position
Add position information to `while evaluating the attribute` errors in the debugger

(cherry picked from commit ffe67c86a8ef3695e5c8b9c9800c192ac633dded)
Change-Id: I177ea5ec60898abe09fb9d80d9602b2a32ff8f44
2024-03-04 09:25:17 +01:00
eldritch horrors 542a19104e Merge pull request #9918 from 9999years/debugger-locals-for-let-expressions
Expose locals from `let` expressions to the debugger

(cherry picked from commit acef4f17a2daab4ccdf656bdf229792db2f779e4)
Change-Id: Ib3623254f67ac762f4e7230d625e9f87dff38a84
2024-03-04 08:54:52 +01:00
eldritch horrors 43cedec6c5 Merge pull request #9919 from 9999years/reduce-debugger-clutter
Reduce visual clutter in the debugger

(cherry picked from commit f388a6148dae0fc999f1a67d0b96d76788f9b97f)
Change-Id: I21bfe3e9f75816484b0f46dbe09e0ff40b22c6d9
2024-03-04 08:52:57 +01:00
eldritch horrors 044c117a9f Merge pull request #9481 from iFreilicht/disallow-nix-search-without-search-terms
nix search: Disallow empty regex

(cherry picked from commit 1c260fa6d1f47d83954792771d0614db163cc3bc)
Change-Id: Iaaf3605c24a342fcb05d0b534a9f305533d3b5fa
2024-03-04 08:40:12 +01:00
eldritch horrors 4c56629a52 Merge pull request #9692 from 9999years/update-clang-stdenv
Remove `clang11Stdenv`

(cherry picked from commit cbf99c71c6f58579174c1c7649a5421c1d2ba9b0)
Change-Id: I716ce1a54f2006c4a9dc9716e8529fe7858ecebb
2024-03-04 07:48:42 +01:00
eldritch horrors 6b279cd10e Merge pull request #9658 from pennae/env-diet
reduce the size of Env by one pointer

(cherry picked from commit 83f5622545a2fc31eb7e7d5105f64ed6dd3058b3)
Change-Id: I5636290526d0165cfc61aee1e7a5b94db4a26cef
2024-03-04 07:37:45 +01:00
eldritch horrors cd326a2aa4 Merge pull request #9673 from pennae/drv-parse-opts
optimize derivation parsing

(cherry picked from commit 3511430902941f0f26dc71313a54bb5096f57305)
Change-Id: I00f76dcd464a5811944613731501af504b6e8c29
2024-03-04 07:36:51 +01:00
eldritch horrors 96f1a404d0 Merge pull request #9617 from 9999years/stack-overflow-segfault
Fix segfault on infinite recursion in some cases

(cherry picked from commit bf1b294bd81ca76c5ec9fe3ecd52196bf52a8300)
Change-Id: Id137541426ec8536567835953fccf986a3aebf16
2024-03-04 07:35:20 +01:00
eldritch horrors 7614aa9797 Merge pull request #4093 from matthewbauer/eval-system
Add eval-system option

(cherry picked from commit 071dbbee33af9f27338c3e53e4ea067dbfa14010)
Change-Id: Ia81358c8cfb60241da07a4d0e84b9ee62a18a53f
2024-03-04 07:21:01 +01:00
eldritch horrors 116e48fad3 Merge pull request #9573 from hercules-ci/rl-next-md-frontmatter
rl-next: Fix and support markdown frontmatter syntax
(cherry picked from commit 69b7876a0810269ad71807594cfd99b26cd8a5ff)
Change-Id: I8bfb8967af0943080fdd70d257c34abaf0a9fedf
2024-03-04 07:12:09 +01:00
eldritch horrors 2ba9788003 Merge pull request #9555 from 9999years/positions-in-errors
Pass positions when evaluating

(cherry picked from commit c8458bd731eb1c74159bebe459ea00165e056b65)
Change-Id: I1b4a5d58973be6264ffdb23b4492da200fdb71be
2024-03-04 07:11:25 +01:00
eldritch horrors a089d8f5f6 Merge pull request #9465 from obsidiansystems/build-dir
Use `buildprefix` in a few more places

(cherry picked from commit b6a3fde6b7a416929553e6be36fc991680ddf9ef)
Change-Id: I2790663fa9f8242ac2db6582b7e421d2fdf42942
2024-03-04 07:11:25 +01:00
eldritch horrors e8a488236c Merge pull request #9393 from hercules-ci/changelog-d
Automatically compile hand-written release notes with `changelog-d`

(cherry picked from commit 928f0c13414d20c1af88b30bd6700fd730ee0bab)
Change-Id: Ia0685835c52edf185b64dd696b19305746c077e5
2024-03-04 07:11:19 +01:00
eldritch horrors 340a6cf977 Merge pull request #9257 from Artturin/nixenvjsondrvpath
`nix-env --query`: fix `--json` ignoring `--drv-path`

(cherry picked from commit 516e7ddc41f39ff939b5d5b5dc71e590f24890d4)
Change-Id: I84b5bccea9d0383e2e74544743b703942e7be547
2024-03-04 05:59:15 +01:00
eldritch horrors 032eff7f69 Merge pull request #8470 from ncfavier/shebang-single-quotes
nix-shell: support single quotes in shebangs, fix whitespace parsing
(cherry picked from commit 3b99c6291377cbd22607896af9dfafa857d2f2dc)
Change-Id: I2a431b21c3467eefa1ef95d5a36d672f45b6937a
2024-03-04 05:06:32 +01:00
eldritch horrors aeb803de9a Merge pull request #8047 from lovesegfault/always-allow-substitutes
feat: add always-allow-substitutes

(cherry picked from commit da2b59a08878b3c6c7074595e3b6d26b6928b4c1)
Change-Id: I50481cd8fe643c673c610fec28bad84519a4d650
2024-03-04 04:37:03 +01:00
eldritch horrors 6897e238bd Merge pull request #9099 from obsidiansystems/common-proto
Factor out bits of the worker protocol to use elsewhere

(cherry picked from commit 4b1a97338f517f45e6169d3d8845c5caa5724e97)
Change-Id: If93afa0f8b1cf9b0e705b34fa71e6fd708752758
2024-03-04 04:36:58 +01:00
eldritch horrors da0aa66d98 Merge pull request #9131 from obsidiansystems/delete-bootstrap-script
Get rid of `bootstrap.sh`

(cherry picked from commit aaef47a08eaf54a8856dd25c784fd85d8d7b0e22)
Change-Id: I1a74bed0c23d6fda06d5dfd8ecad443b9122da12
2024-03-04 04:36:52 +01:00
eldritch horrors f17e7b1855 Merge pull request #8923 from obsidiansystems/test-proto
Unit test some worker protocol serializers

(cherry picked from commit c6faef61a6f31c71146aee5d88168e861df9a22a)
Change-Id: I99e36f5f17eb7642211a4e42a16b143424f164b4
2024-03-04 04:36:14 +01:00
Théophane Hufschmitt 68ba44c518 Merge pull request #8931 from fricklerhandwerk/nix3-config-options
do not show configuration override flags for each command

(cherry picked from commit f89b84919c1a5c796512c50311821e7779b3678b)
Change-Id: Ib98b739bd6c9a1e94f94a78a47d84d72e435e7c0
2024-03-04 04:35:54 +01:00
github-actions[bot] 2db5c5326b
fix location of _redirects file (#9956) 2024-02-07 11:44:06 +01:00
github-actions[bot] 4dd5171652
fix an old lost direct (#9717)
this part must have been moved quite a while ago, but apparently so far
no one noticed

(cherry picked from commit 6db805b3d1e4eccd0103d9856b8ab3d01efba51f)

Co-authored-by: Valentin Gagarin <valentin.gagarin@tweag.io>
2024-01-08 20:57:39 +01:00
John Ericson f7f37035c8 Move tests to separate directories, and document
Today, with the tests inside a `tests` intermingled with the
corresponding library's source code, we have a few problems:

- We have to be careful that wildcards don't end up with tests being
  built as part of Nix proper, or test headers being installed as part
  of Nix proper.

- Tests in libraries but not executables is not right:

  - It means each executable runs the previous unit tests again, because
    it needs the libraries.

  - It doesn't work right on Windows, which doesn't want you to load a
    DLL just for the side global variable . It could be made to work
    with the dlopen equivalent, but that's gross!

This reorg solves these problems.

There is a remaining problem which is that sibbling headers (like
`hash.hh` the test header vs `hash.hh` the main `libnixutil` header) end
up shadowing each other. This PR doesn't solve that. That is left as
future work for a future PR.

Co-authored-by: Valentin Gagarin <valentin.gagarin@tweag.io>

(cherry picked from commit 91b6833686a6a6d9eac7f3f66393ec89ef1d3b57)
(cherry picked from commit a61e42adb528b3d40ce43e07c79368d779a8b624)
2023-12-01 13:05:03 -05:00
John Ericson 30dcc19d1f Put functional tests in tests/functional
I think it is bad for these reasons when `tests/` contains a mix of
functional and integration tests

 - Concepts is harder to understand, the documentation makes a good
   unit vs functional vs integration distinction, but when the
   integration tests are just two subdirs within `tests/` this is not
   clear.

 - Source filtering in the `flake.nix` is more complex. We need to
   filter out some of the dirs from `tests/`, rather than simply pick
   the dirs we want and take all of them. This is a good sign the
   structure of what we are trying to do is not matching the structure
   of the files.

With this change we have a clean:
```shell-session
$ git show 'HEAD:tests'
tree HEAD:tests

functional/
installer/
nixos/
```

(cherry picked from commit 68c81c737571794f7246db53fb4774e94fcf4b7e)
2023-12-01 12:06:43 -05:00
Valentin Gagarin 8fb477a6e7 add path based redirects
up to now, those were managed outside of this repo, which as
unsurprisingly a real hassle to deal with if one wanted to prevent URLs
from breaking when moving pages around. this change removes a large part
of the friction involved in moving content in the Nix manual.

possible next steps for further automation:
- check for content that moved and warn if it's not reachable from
  links that were valid prior to a change
- create redirect rules automatically based on this information

(cherry picked from commit 2b7016cc56d12e67de9f1f25b18311866a26a5fe)
2023-11-27 13:29:00 +00:00
Valentin Gagarin a68bf15fe6 backport fix for the --help output 2023-11-10 19:22:42 +01:00
Eelco Dolstra 44fb119218 Mark official release 2023-09-20 12:49:01 +02:00
Eelco Dolstra 10ad052f7d Release notes 2023-09-20 11:42:49 +02:00
Emil Nikolov 2cdc9c32e7
docs: fixed the default priority of nix-env --install (#8945) 2023-09-09 06:54:39 +00:00
John Ericson 7ad66cb3ef Allow dynamic derivation deps in inputDrvs
We use the same nested map representation we used for goals, again in
order to save space. We might someday want to combine with `inputDrvs`,
by doing `V = bool` instead of `V = std::set<OutputName>`, but we are
not doing that yet for sake of a smaller diff.

The ATerm format for Derivations also needs to be extended, in addition
to the in-memory format. To accomodate this, we added a new basic
versioning scheme, so old versions of Nix will get nice errors. (And
going forward, if the ATerm format changes again the errors will be even
better.)

`parsedStrings`, an internal function used as part of parsing
derivations in A-Term format, used to consume the final `]` but expect
the initial `[` to already be consumed. This made for what looked like
unbalanced brackets at callsites, which was confusing. Now it consumes
both which is hopefully less confusing.

As part of testing, we also created a unit test for the A-Term format for
regular non-experimental derivations too.

Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
Co-authored-by: Valentin Gagarin <valentin.gagarin@tweag.io>

Apply suggestions from code review

Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
2023-09-07 10:39:37 -04:00
John Ericson 3a62651bd6
Merge pull request #8933 from fricklerhandwerk/option-anchors
Add anchors to option listings
2023-09-06 09:39:33 -04:00
John Ericson 216c66ddcf
Merge pull request #8932 from fricklerhandwerk/formatting
dedent common options listing; one sentence per line
2023-09-06 09:30:25 -04:00
John Ericson 754528241a
Merge pull request #8927 from obsidiansystems/test-derivation-aterm
Test and begin documentation of the ATerm format for derivations
2023-09-06 09:24:52 -04:00
John Ericson d568877eab
Retitle section as Robert suggests
Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
2023-09-06 08:43:16 -04:00
Valentin Gagarin 391f18063c add anchors to option listings 2023-09-06 09:52:56 +02:00
Valentin Gagarin 02c2679f0e dedent common options listing; one sentence per line
this is a pure reformatting, contents were not changed

one sentence per line makes reviewing diffs and making suggestions much
more convenient. the indentation was an artifat of the DocBook
migration.
2023-09-06 09:49:00 +02:00
Valentin Gagarin 5c23d3a90c disambiguate output from output path 2023-09-06 09:09:02 +02:00
John Ericson 880d9cabed Test and begin documentation of the ATerm format for derivations
Wanted to do this before the last dynamic derivations PR when I
introduce a variation, to make sure I wasn't changing the old version by
mistake.
2023-09-05 11:16:39 -04:00
Valentin Gagarin f34484d18a
Merge pull request #7592 from fricklerhandwerk/nix-store-realise
reword description of how realisation works
2023-09-05 11:55:01 +02:00
Eelco Dolstra 919781cacc
Merge branch 'master' into valid_deriver_2 2023-09-01 13:35:05 +02:00
Valentin Gagarin 1ac181759d revert some random change 2023-08-31 21:27:13 +02:00
Valentin Gagarin d38a539437 make description open-ended, add TODO
Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
2023-08-31 21:27:11 +02:00
Valentin Gagarin 894cbe43bc don't invent terms yet 2023-08-31 21:26:46 +02:00
Valentin Gagarin b951e862d0 more meaningful tagline 2023-08-31 21:26:46 +02:00
Valentin Gagarin cf4e14d58d accommodate "do nothing" branch 2023-08-31 21:26:46 +02:00
Valentin Gagarin d460dbdd30 be more precise about substituting store derivations
Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
2023-08-31 21:26:46 +02:00
Valentin Gagarin 6b3320ab05 mention remote builders
Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
2023-08-31 21:26:44 +02:00
Valentin Gagarin 0cd8f36644 add anchor to builder 2023-08-31 21:26:15 +02:00
Valentin Gagarin d50f116421 add reference link 2023-08-31 21:25:39 +02:00
Valentin Gagarin b7e9e29605 remove abstract description 2023-08-31 21:25:39 +02:00
Valentin Gagarin a57e0e8c5c reword introductory sentence 2023-08-31 21:25:39 +02:00
Valentin Gagarin 315a11bcc9 remove superfluous word 2023-08-31 21:25:39 +02:00
Valentin Gagarin 1bc9257d7c reword description of how realisation works 2023-08-31 21:25:39 +02:00
Cole Helbling 46478b44ff
docs/testing: point out the existence of GTEST_FILTER (#8883) 2023-08-29 22:13:35 +00:00
Eelco Dolstra 5b5f56a9d4
Merge pull request #8859 from edolstra/tarball-last-modified
Tarball trees: Propagate lastModified
2023-08-29 17:02:06 +02:00
Eelco Dolstra 56763ff918 Document that redirected tarball flakerefs can specify lastModified 2023-08-29 16:08:29 +02:00
Silvan Mosberger 151120a1ae
Document nix-prefetch-url defaults (#8878) 2023-08-28 22:14:01 +02:00
tomberek b563ef38cc
Merge pull request #8819 from VertexA115/fix/deep-follow-paths
Fix follow path checking at depths greater than 2
2023-08-25 10:33:05 -04:00
Guillaume Girol 925a444b92 add nix-store --query --valid-derivers command
notably useful when nix-store --query --deriver returns a non-existing
path.

Co-authored-by: Felix Uhl <iFreilicht@users.noreply.github.com>
2023-08-24 11:37:24 +02:00
Valentin Gagarin d5b130ef13 glossary: dedent list and do not use forced line breaks
this makes it slightly easier to work with and consistent with all the
other markdown lists in use
2023-08-24 10:00:17 +02:00
Uri Zafrir 4a435ad228
Add introductory sentence to advanced topics (#8861) 2023-08-23 15:18:25 +00:00
Alex Zero 37a509ca2d Add release notes for the previous commit 2023-08-14 18:56:02 +01:00
John Ericson 44c8d83831 Create outputOf primop.
In the Nix language, given a drv path, we should be able to construct
another string referencing to one of its output. We can do this today
with `(import drvPath).output`, but this only works for derivations we
already have.

With dynamic derivations, however, that doesn't work well because the
`drvPath` isn't yet built: importing it like would need to trigger IFD,
when the whole point of this feature is to do "dynamic build graph"
without IFD!

Instead, what we want to do is create a placeholder value with the right
string context to refer to the output of the as-yet unbuilt derivation.
A new primop in the language, analogous to `builtins.placeholder` can be
used to create one. This will achieve all the right properties. The
placeholder machinery also will match out the `outPath` attribute for CA
derivations works.

In 60b7121d2c we added that type of
placeholder, and the derived path and string holder changes necessary to
support it. Then in the previous commit we cleaned up the code
(inspiration finally hit me!) to deduplicate the code and expose exactly
what we need. Now, we can wire up the primop trivally!

Part of RFC 92: dynamic derivations (tracking issue #6316)

Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
2023-08-14 09:37:37 -04:00
John Ericson 60b7121d2c Make the Derived Path family of types inductive for dynamic derivations
We want to be able to write down `foo.drv^bar.drv^baz`:
`foo.drv^bar.drv` is the dynamic derivation (since it is itself a
derivation output, `bar.drv` from `foo.drv`).

To that end, we create `Single{Derivation,BuiltPath}` types, that are
very similar except instead of having multiple outputs (in a set or
map), they have a single one. This is for everything to the left of the
rightmost `^`.

`NixStringContextElem` has an analogous change, and now can reuse
`SingleDerivedPath` at the top level. In fact, if we ever get rid of
`DrvDeep`, `NixStringContextElem` could be replaced with
`SingleDerivedPath` entirely!

Important note: some JSON formats have changed.

We already can *produce* dynamic derivations, but we can't refer to them
directly. Today, we can merely express building or example at the top
imperatively over time by building `foo.drv^bar.drv`, and then with a
second nix invocation doing `<result-from-first>^baz`, but this is not
declarative. The ethos of Nix of being able to write down the full plan
everything you want to do, and then execute than plan with a single
command, and for that we need the new inductive form of these types.

Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
Co-authored-by: Valentin Gagarin <valentin.gagarin@tweag.io>
2023-08-10 00:08:32 -04:00
Théophane Hufschmitt ad410abbe0 Stabilize discard-references
It has been there for a few releases now (landed in 2.14.0), doesn't
seem to cause any major issue and is wanted in a few places
(https://github.com/NixOS/nix/pull/7087#issuecomment-1544471346).
2023-08-07 16:53:37 +02:00
John Ericson 9113b4252b
Merge pull request #8760 from iFreilicht/fix-json-load-assertion-errors
Fix derivation load assertion errors
2023-08-06 17:07:43 -07:00
Felix Uhl 3fefc2b284 Fix derivation load assertion errors
When loading a derivation from a JSON, malformed input would trigger
cryptic "assertion failed" errors. Simply replacing calls to `operator []`
with calls to `.at()` was not enough, as this would cause json.execptions
to be printed verbatim.

Display nice error messages instead and give some indication where the
error happened.

*Before:*

```
$ echo 4 | nix derivation add
error: [json.exception.type_error.305] cannot use operator[] with a string argument with number

$ nix derivation show nixpkgs#hello | nix derivation add
Assertion failed: (it != m_value.object->end()), function operator[], file /nix/store/8h9pxgq1776ns6qi5arx08ifgnhmgl22-nlohmann_json-3.11.2/include/nlohmann/json.hpp, line 2135.

$ nix derivation show nixpkgs#hello | jq '.[] | .name = 5' | nix derivation add
error: [json.exception.type_error.302] type must be string, but is object

$ nix derivation show nixpkgs#hello | jq '.[] | .outputs = { out: "/nix/store/8j3f8j-hello" }' | nix derivation add
error: [json.exception.type_error.302] type must be object, but is string

```

*After:*

```
$ echo 4 | nix derivation add
error: Expected JSON of derivation to be of type 'object', but it is of type 'number'

$ nix derivation show nixpkgs#hello | nix derivation add
error: Expected JSON object to contain key 'name' but it doesn't

$ nix derivation show nixpkgs#hello | jq '.[] | .name = 5' | nix derivation add
error: Expected JSON value to be of type 'string' but it is of type 'number'

$ nix derivation show nixpkgs#hello | jq '.[] | .outputs = { out: "/nix/store/8j3f8j-hello" }' | nix derivation add
error:
       … while reading key 'outputs'

       error: Expected JSON value to be of type 'object' but it is of type 'string'
```
2023-08-05 01:34:30 +02:00
John Ericson 3b592c880a Add infra for experimental store implemenations
This is analogous to that for experimental settings and flags that we
have also added as of late.
2023-08-02 15:46:38 -04:00
Robert Hensing 33d58a90c2 toJSON: Add attribute path to trace 2023-07-31 13:02:54 +02:00
Alex Ameen 2d1d81114d
Add parseFlakeRef and flakeRefToString builtins (#8670)
Over the last year or so I've run into several use cases where I need to
parse and/or serialize URLs for use by `builtins.fetchTree` or
`builtins.getFlake`, largely in order to produce _lockfile-like_ files
for lang2nix frameworks or tools which use `nix` internally to drive
builds.

I've gone through the painstaking process of emulating
`nix::FlakeRef::fromAttrs` and `nix::parseFlakeRef` several times with
mixed success; but these are difficult to create and even harder to
maintain if I hope to stay aligned with changes to the real
parser/serializer.

I understand why adding new `builtins` isn't something we want to do
flagrantly. I'm recommending this addition simply because I keep
encountering use cases where I need to parse/serialize these URIs in
`nix` expressions, and I want a reliable solution.

Co-authored-by: Eelco Dolstra <edolstra@gmail.com>
Co-authored-by: John Ericson <git@JohnEricson.me>
2023-07-25 17:43:33 +00:00
Naïm Favier 1b756e300f
doc: clarify release notes about nested attribute merges 2023-07-25 16:09:56 +02:00
Eelco Dolstra c51be0345e Release notes 2023-07-24 17:19:31 +02:00
Naïm Favier 570a1a3ad7
parser: merge nested dynamic attributes
Fixes https://github.com/NixOS/nix/issues/7115
2023-07-21 17:14:03 +02:00
Valentin Gagarin 85d0eb6316
fix broken links (#8722) 2023-07-20 17:58:14 +02:00
Valentin Gagarin 0e4f6dfcf7 revert anchor prefix for builtin constants
the original change broke many pre-existing anchor links.

also change formatting of the constants listing slightly:
- the type should not be part of the anchor
- add highlight to the "impure only" note
2023-07-20 10:27:38 +02:00
John Ericson 453c4be93c
Merge pull request #8680 from NixLayeredStore/test-groups
Introduce notion of a test group, use for CA tests
2023-07-19 11:17:57 -04:00