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9424 commits

Author SHA1 Message Date
Qyriad 2a98fe28cb meson: correctly set NIX_CONF_DIR to $sysconfdir/nix
Instead of $sysconfdir.

Fixes #231, but there's more to do in following commits to make
Meson-built Lix actually look in /etc/nix.

Change-Id: Ia8d627070f405843add46e05cff5134b76b8eb48
2024-04-09 02:25:58 -06:00
Qyriad 7e139c52dd format repl-overlays.nix to fix pre-commit checks
Change-Id: I9487f5832160c1093d8752f883c1be85f8310e0f
2024-04-09 02:21:26 -06:00
Rebecca Turner a95c62673b Merge "Add repl-overlays" into main 2024-04-09 05:29:48 +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 c58e3f826e pragma once and ///@file everything missing it
Change-Id: Ia1a72348336794b5fb9f2694dd750266089b904e
2024-04-08 15:40:12 -07:00
jade 54bc1f1b98 "but doctor, I AM the untrusted store": nix doctor had wrong trustedness
This probably snuck in in a refactor using truthiness or so. The
trustedness flag was having the optional fullness checked, rather than
the actual contained trust level.

Also adds some tests.

```
m1@6876551b-255d-4cb0-af02-8a4f17b27e2e ~ % nix store ping
warning: 'nix store ping' is a deprecated alias for 'nix store info'
Store URL: daemon
Version: 2.20.4
Trusted: 0
m1@6876551b-255d-4cb0-af02-8a4f17b27e2e ~ % nix doctor
warning: 'doctor' is a deprecated alias for 'config check'
[PASS] PATH contains only one nix version.
[PASS] All profiles are gcroots.
[PASS] Client protocol matches store protocol.
[INFO] You are trusted by store uri: daemon
```

Fixes: lix-project/lix#232
Change-Id: I21576e2a0a755036edf8814133345987617ba3d0
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
jade e55fc5af71 Merge "nix-doc -> lix-doc, make self-contained in package.nix" into main 2024-04-08 07:45:00 +00:00
Rebecca Turner 8ed8b9aef0 Merge "Add PathsSetting" into main 2024-04-08 06:31:11 +00:00
jade 0145d45806 nix-doc -> lix-doc, make self-contained in package.nix
package.nix previously needed this callPackage'd externally, which
didn't make a lot of sense to us since this is an internal dependency.
Thus we changed it to make it more self contained.

Change-Id: I4935bc0bc80e1a132bc9b1519e917791da95037c
2024-04-08 04:05:13 +00:00
Robert Hensing b995c17f0e Merge pull request #10208 from 9999years/print-strings-directly
`:print` strings directly in `nix repl`

(cherry picked from commit 3539172fd2f7cee639ce46423c58beca4231f2db)
Change-Id: I1972f3bf3b56312851f38288509d371d37f21677
Upstream-PR: https://github.com/NixOS/nix/pull/10208
2024-04-07 19:10:43 -07:00
Rebecca Turner 6f863e8ccd Add PathsSetting
Change-Id: I1165f6ef033a5f757ca3716d3f8008ba36b01fd0
2024-04-07 18:22:15 -07:00
terru - a33c95be5b avoid markdown which the repl's :doc cannot handle
code blocks, if not surrounded by empty lines, have the language
tags (in these cases, always `nix`) show up in the output of :doc.

for example:

  nix-repl> :doc builtins.parseFlakeRef
  Synopsis: builtins.parseFlakeRef flake-ref

    Parse a flake reference, and return its exploded form.

    For example: nix builtins.parseFlakeRef
    "github:NixOS/nixpkgs/23.05?dir=lib"  evaluates to: nix { dir =
    "lib"; owner = "NixOS"; ref = "23.05"; repo = "nixpkgs"; type =
    "github"; }

is now instead:
  nix-repl> :doc builtins.parseFlakeRef
  Synopsis: builtins.parseFlakeRef flake-ref

    Parse a flake reference, and return its exploded form.

    For example:

      | builtins.parseFlakeRef "github:NixOS/nixpkgs/23.05?dir=lib"

    evaluates to:

      | { dir = "lib"; owner = "NixOS"; ref = "23.05"; repo = "nixpkgs"; type = "github"; }

(closes #225)

Change-Id: I0741aeb1006a5376bb2f663d202c7a4da7e38cce
2024-04-06 13:14:14 +00:00
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
eldritch horrors 38dc6f5b69 Revert "libutil: drop Pool resources on exceptional free"
This reverts commit de2884b82b376d10de5c400d8e73bc7d98f195d2.

Change-Id: I1fa301149d7c2ed3d266a40c15b2d010e12e44e6
2024-04-05 20:13:02 +00:00
eldritch horrors 52f741c23a Revert "libutil: remove Pool::Handle::bad"
This reverts commit 792844fb861ea7367ac2316c78fec055363f2f9e.

Change-Id: I3ca208b62edfd5cd1199478f75cd2edf19a364f6
2024-04-05 20:13:02 +00:00
eldritch horrors 0b8a17cab6 Revert "libstore: remove one Resource::good flag"
This reverts commit 87249eb579bf57f4f09e9fca100588a4d6b90b4c.

Change-Id: Ide4c6e00c4155216a17e46671ff47151d7bb85b4
2024-04-05 20:13:02 +00:00
eldritch horrors ad30972867 Revert "libstore: using throwing finally in withFramedSink"
This reverts commit 491caad6f62c21ffbcdebe662e63ec0f72e6f3a2.

this is not actually legal for nix! throwing exceptions in destructors
is fine, but the way nix is set up we'll end up throwing the exception
we received from the remote *twice* in some cases, and such cases will
cause an immediate terminate without active exception.

Change-Id: I74c46b9f26fd791086e4193ec60eb1deb9a5bb2a
2024-04-05 20:13:02 +00:00
eldritch horrors c77b6e1fdd Revert "libutil: allow graceful dropping of Pool::Handle"
This reverts commit 8075541d82d05347321d35b9934ccee5f82142f4.

Change-Id: I05fa6a9de1308a4827a6557cf2807eb47ca64da6
2024-04-05 20:13:02 +00:00
eldritch horrors 821ad98beb Revert "libutil: drop Fs{Source,Sink}::good"
This reverts commit 1340807e30dba4b3972c31f02861bbaeaeb60e61.

Change-Id: I34d2a80eb3c3e9d79cb02b92cd1189da32d18cb6
2024-04-05 20:13:02 +00:00
eldritch horrors 6c777476c9 libutil: guard Finally against invalid exception throws
throwing exceptions is fine, but throwing exceptions during exception
handling is hard enough to do correctly that we should just forbid it
entirely out of an overabundance of caution. in cases where terminate
is the correct answer the users of Finally must call it manually now.

Change-Id: Ia51a2cb4a0638500550bfabc89cf01a6d8098983
2024-04-05 20:13:02 +00:00
Rebecca Turner b44514819b Merge "Add EscapeStringOptions and escapeString tests" into main 2024-04-04 17:41:13 +00:00
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
Rebecca Turner ea10fe7ab0 Add EscapeStringOptions and escapeString tests
Change-Id: I86ead2f969c9e03c9edfa51bbc92ee06393fd7d6
2024-04-03 16:25:54 +00:00
Ilya K e9960e147b libexpr/flake: don't purple the flake.lock diff
Change-Id: I6f9471fb0ddd51fadb209ad970abd215238ba5c4
2024-04-01 08:57:50 +03:00
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
eldritch horrors 45623f077f libutil: drop Fs{Source,Sink}::good
setting this only on exceptions caused by actual fd access is not
sufficient to diagnose all errors (such as SerialisationError) in
some cases. this usually does not have any negative effects since
those errors will end up killing the process in another way. this
is not a reliable assumption though and we should be using proper
error handling (and closing connections more often, preferring to
close over keeping something open that might be in a weird state)

Change-Id: I1b792cd7ad8ba9ff0f6bd174945ab2575ff2208e
2024-03-31 16:42:40 +00:00
eldritch horrors f402c45cfa libutil: allow graceful dropping of Pool::Handle
not needed yet, but returning a resource from the exception handling
path that has ownership of a handle is currently not well-supported.
we could also add a default constructor to Handle, but then we would
also need to change the pool reference to a pointer. eventually that
should be done since now resources can be swapped between pools with
clever moves, but since that's not a problem yet we won't do it now.

Change-Id: I26eb06581f7be34569e9e67a33da736128d167af
2024-03-31 15:46:01 +00:00
jade 73507a7167 Merge changes Ib62d3d68,Ic3e7affe into main
* changes:
  Make things that can throw not noexcept anymore
  Fix various clang-tidy lints
2024-03-31 15:38:48 +00:00
eldritch horrors 2d3fd6b9ab libstore: using throwing finally in withFramedSink
the duplication of exception handling was added without justification,
so we can only assume that it was done like this because Finally could
not throw exceptions safely. since this has now been rectified we will
deduplicate this handler code again.

Change-Id: I40721f3378c0fd9f34e2914a16d383f6e2713b40
2024-03-31 14:23:15 +00:00
eldritch horrors dd06f9b792 libutil: make ~Finally noexcept(false)
this is supposed to act like a finally block does in other languages. a
finally block should be able to throw exceptions of its own rather than
just crashing the entire program when it throws it own exceptions. even
in the rare case of a finally throwing an unexpected exception it might
be better to report the exception from Finally instead of the original,
at least that can keep our program running instead of letting it crash.

Change-Id: Id42011e46b1df369152b4564938c0e93fa1acf32
2024-03-31 13:42:01 +00:00
eldritch horrors c777dcd1ae libstore: remove one Resource::good flag
usage of this flag previously kept connections open much longer than
necessary, and at the same time obscured that a connection was being
dropped when it *was* set. new variable names clarify this somewhat.

Change-Id: I11f6f08f37a5e4dc04ea6c6036ea589154b121c6
2024-03-31 00:52:41 +00:00
eldritch horrors 0b6d353474 libutil: remove Pool::Handle::bad
it was used incorrectly (not swapped on handle move), only used in one
place (that is now handled with exception handling detection in Handle
itself), and if ever reintroduced should be replaced with a different,
more understandable mechanism (like an explicit dropAsInvalid method).

Change-Id: Ie3e5d5cfa81d335429cb2ee5c3ad85c74a9df17b
2024-03-31 00:30:43 +00:00
eldritch horrors 862f20a4ba libutil: remove Pool::flushBad
this was never actually used, and bad design in the first place—why
should a bad resource be put back into the idle pool? just drop it.

Change-Id: Idab8774bee19dadae0209d404c4fb86dd4aeba1e
2024-03-31 00:07:09 +00:00
eldritch horrors 620de98d0c libutil: drop Pool resources on exceptional free
if a scope owning a resource does not gracefully drop that resource
while handling exceptions from deeper down the call stack we should
assume the resource is invalid state and drop it. currently it *is*
true that such cases do not cause resources to be freed, but thanks
to validator misuses this has so far not caused any larger problem.

Change-Id: Ie4f91bcd60a64d05c5ff9d22cc97954816d13b97
2024-03-30 23:40:45 +00:00
Rebecca Turner 4b730f328e Merge "Add pre-commit checks" into main 2024-03-30 22:26:59 +00:00
eldritch horrors 5956f509b6 meson: install libexec binaries
Change-Id: I149892bf081e1569d7786f085e890bc3d2eb50e5
2024-03-30 14:34:22 +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
jade 194a1b91af Make things that can throw not noexcept anymore
This does involve making a large number of destructors able to throw,
because we had to change it high in the class hierarchy. Oh well.

Change-Id: Ib62d3d6895b755f20322bb8acc9bf43daf0174b2
2024-03-29 20:26:38 -07:00
jade 1fa6a3e335 Fix various clang-tidy lints
* some things that can throw are marked noexcept
  yet the linter seems to think not. Maybe they can't throw in practice.
  I would rather not have the UB possibility in pretty obvious cold
  paths.
* various default-case-missing complaints
* a fair pile of casts from integer to character, which are in fact
  deliberate.
* an instance of <https://clang.llvm.org/extra/clang-tidy/checks/bugprone/move-forwarding-reference.html>
* bugprone-not-null-terminated-result on handing a string to curl in
  chunks of bytes. our usage is fine.
* reassigning a unique_ptr by CRIMES instead of using release(), then
  using release() and ignoring the result. wild. let's use release() for
  its intended purpose.

Change-Id: Ic3e7affef12383576213a8a7c8145c27e662513d
2024-03-29 20:26:38 -07:00
jade a4f5bb951d Merge "Document ExprLambda fields" into main 2024-03-30 03:22:53 +00:00
Jade Lovelace 817322fbfb Document ExprLambda fields
We got confused what formals did and had to briefly figure it out. We
should just have docs, so these are some.

Change-Id: If3e794a401e69d022785cbfa0b0c2e2284f41f58
2024-03-29 18:29:59 -07:00
Rebecca Turner a5a25894c1 Move escapeString to its own file
Change-Id: Ie5c954ec73c46c9d3c679ef99a83a29cc7a08352
2024-03-29 16:26:29 -07:00
eldritch horrors 1da1f501fc meson: fix state-dir default value
the autoconf build system defaults to /nix/var, not /nix/var/nix. the
latter is only used in libstore, so we'll move the extra segment there.

Change-Id: Idfbc988ee302355982abdcd51d6d7b5d5d661c0d
2024-03-29 19:14:23 +00:00
Winter Cute 6646b80396 meson: add missing explicit dependency on nlohmann_json
Without this, the Meson setup won't bail out if nlohmann_json is
missing, leading to subpar DX (and maybe worse, but I'm not entirely
sure).

Change-Id: I5913111060226b540dcf003257c99a08e84da0de
2024-03-29 14:16:58 -04:00
Rebecca Turner 877750b7c5 Merge "Move DebugChar into its own file" into main 2024-03-29 16:20:14 +00:00
eldritch horrors 6e5db5e4a2 meson: install missing/generated headers
one headers (args/root.hh) was simply missing, and the generated headers
were not installed. not all of them *should* be installed either, only a
select few (and sadly this needs a custom target for each one, it seems)

Change-Id: I37b25517895d0e5e521abc1202fa65624de57ed1
2024-03-29 02:45:48 +00:00
eldritch horrors 69bfd21e20 meson: install pkg-config files for libraries
Change-Id: I14b9d81d09f188eacfb9c68bcfb84751c18e3779
2024-03-29 02:45:48 +00:00
Rebecca Turner 236bc046ba Merge "Remove HintFmt::operator%" into main 2024-03-29 01:13:45 +00:00
raito 55350bd68d Merge "feat: unprivileged read-only open of SQLite DB" into main 2024-03-29 00:49:17 +00:00