this is only used to close non-stdio files in derivation sandboxes. we
may as well encode that in its name, drop the unnecessary integer set,
and use close_range to deal with the actual closing of files. not only
is this clearer, it also makes sandbox setup on linux fast by 1ms each
Change-Id: Id90e259a49c7bc896189e76bfbbf6ef2c0bcd3b2
implementing a build hook is pretty much impossible without either being
a nix, or blindly forwarding the important bits of all build requests to
some kind of nix. we've found no uses of build-hook in the wild, and the
build-hook protocol (apart from being entirely undocumented) is not able
to convey any kind of versioning information between hook and daemon. if
we want to upgrade this infrastructure (which we do), this must not stay
Change-Id: I1ec4976a35adf8105b8ca9240b7984f8b91e147e
this is a bit of a hack, but it's apparently the cleanest way of doing
this in the absence of any kind of priority/provenance information for
values of some given setting. we'll need this to deprecate build-hook.
Change-Id: I03644a9c3f17681c052ecdc610b4f1301266ab9e
sure, linux has been providing argv[0] by default for a while now. other
OSes may not be as forthcoming though, and relying on the OS to create a
world in which we can just make assumptions we could test for instead is
unnecessarily lazy. we *could* default argv0, but that's a little silly.
notably we abort instead of returning normally to avoid confusions where
a caller interprets our exit status like a Worker build results bitmask.
Change-Id: Id73f8cd0a630293b789c59a8c4b0c4a2b936b505
* changes:
sqlite: add a Use::fromStrNullable
util: implement charptr_cast
tree-wide: fix a pile of lints
refactor: make HashType and Base enum classes for type safety
build: integrate clang-tidy into CI
This lets us ensure that nobody is putting in new reinterpret_cast
instances where they could safely use charptr_cast instead.
Change-Id: I6358a3934c8133c7150042635843bdbb6b9218d4
There were several usages of the raw sqlite primitives along with C
style casts, seemingly because nobody thought to use an optional for
getting a string or NULL.
Let's fix this API given we already *have* a wrapper.
Change-Id: I526cceedc2e356209d8fb62e11b3572282c314e8
I don't like having so many reinterpret_cast statements that have to
actually be looked at to determine if they are UB. A huge number of the
reinterpret_cast instances in Lix are actually casting to some pointer
of some character type, which is always valid no matter the source type.
However, it is also worth looking at if it is not casting both *from* a
character type and also *to* a character type, since IMO splatting a
struct into a character array should be a very deliberate action instead
of just being about dealing with bad APIs.
So let's write a template that encapsulates this invariant so we can
not worry about the trivially safe reinterpret_cast invocations.
Change-Id: Ia4e2f1fa0c567123a96604ddadb3bdd7449660a4
This:
- Converts a bunch of C style casts into C++ casts.
- Removes some very silly pointer subtraction code (which is no more or
less busted on i686 than it began)
- Fixes some "technically UB" that never had to be UB in the first
place.
- Makes finally follow the noexcept status of the inner function. Maybe
in the future we should ban the function from not being noexcept, but
that is not today.
- Makes various locally-used exceptions inherit from std::exception.
Change-Id: I22e66972602604989b5e494fd940b93e0e6e9297
This still has utterly unacceptably bad output format design that I
would not inflict on anyone I like, but it *does* now exist, and you
*can* find the errors in the log.
Future work would obviously be to fix that and integrate the actual
errors into Gerrit using codechecker or so.
Followup issue: lix-project/lix#457
Fixes: lix-project/lix#147
Change-Id: Ifca22e443d357762125f4ad6bc4f568af3a26c62
The |> operator is a reverse function operator with low binding strength
to replace lib.pipe. Implements RFC 148, see the RFC text for more
details. Closes#438.
Change-Id: I21df66e8014e0d4dd9753dd038560a2b0b7fd805
This is not a proper fix for the confusion that can happen about how the
tags are supposed to be used.
For a proper fix, we need to do
lix-project/lix#439 and implement
worktrees such that the user never sees the git state anymore.
Change-Id: I7b543967f522cede486e42684b48cad47da95429
This was broken because Nix language's version comparison does not know
how to deal with versions like -rc1 and considers them newer, which is
in this case not desirable.
That in turn led to not tagging 2.90.0 docker images as "latest" since
the heuristic was wrong.
This commit also adds some more cross-checking and failsafes in case the
person running releng does not have a local main branch that is up to
date.
Fixes: lix-project/lix#443
Change-Id: I537103ebab58ae978c00e06972abe14432dd9c80
Currently, the parser relies on the global experimental feature flags.
In order to properly test conditional language features, we instead need
to pass it around in the parser::State.
This means that the parser cannot cache the result of isEnabled anymore,
which wouldn't necessarily hurt performance if the function didn't
perform a linear search on the list of enabled features on every single
call. While we could simply evaluate once at the start of parsing and
cache the result in the parser state, the more sustainable solution
would be to fix `isEnabled` such that all callers may profit from the
performance improvement.
Change-Id: Ic9b9c5d882b6270e1114988b63e6064d36c25cf2
This adds a second form to the `:log` command: it now can accept a
derivation path in addition to a derivation expression. As derivation
store paths start with `/nix/store`, this is not ambiguous.
Resolves: lix-project/lix#51
Change-Id: Iebc7b011537e7012fae8faed4024ea1b8fdc81c3
I definitely don't think we were using this, and it is probably an
omission in the original autoconf deletion more than anything.
Change-Id: Ib7c8082685e550575bca5af06f0e93adf982bd7c
I don't know why but I was getting a spurious -Werror=switch-enum inside
toml11. It does not make sense why it did not occur before, but it
should be stopped.
This was not done at an earlier stage to better match the legacy make
build system, but we don't use it anyway.
Change-Id: I636f8a71e8a0ba5e0feb80b435ae24c3af995c5d
This has been causing various seemingly spurious CI failures as well as
some failures on people running tests on beta builds.
lix> ++(nix-collect-garbage-dry-run.sh:20) nix-store --gc --print-dead
lix> ++(nix-collect-garbage-dry-run.sh:20) wc -l
lix> finding garbage collector roots...
lix> error: Listing pid 87261 file descriptors: Undefined error: 0
There is no real way to write a proper test for this, other than to
start a process like the following:
int main(void) {
for (int i = 0; i < 1000; ++i) {
close(i);
}
sleep(10000);
}
and then let Lix's gc look at it.
I have a relatively high confidence this *will* fix the problem since I
have manually confirmed the behaviour of the libproc call is
as-unexpected, and it would perfectly explain the observed symptom.
Fixes: lix-project/lix#446
Change-Id: I67669b98377af17895644b3bafdf42fc33abd076
* changes:
tree-wide: fix various lint warnings
flake & doxygen: update tagline
nix flake metadata: print modified dates for input flakes
cli: eat terminal codes from stdout also
Implement forcing CLI colour on, and document it better
manual: fix a syntax error in redirects.js that made it not do anything
misc docs/meson tidying
build: implement clang-tidy using our plugin
The growth of the seccomp filter in 127ee1a101
made its compilation time significant (roughly 10 milliseconds have been
measured on one machine). For this reason, it is now precompiled and cached in
the parent process so that this overhead is not hit for every single build. It
is still not optimal when going through the daemon, because compilation still
happens once per client, but it's better than before and doing it only once for
the entire daemon requires excessive crimes with the current architecture.
Fixes: lix-project/lix#461
Change-Id: I2277eaaf6bab9bd74bbbfd9861e52392a54b61a3
This is a preparation for precompiling the filter, which is done separately.
The behaviour should be unchanged for now.
Change-Id: I899aa7242962615949208597aca88913feba1cb8
The seccomp setup code was a huge chunk of conditionally compiled
platform-specific code. For this reason, it is appropriate to move it to the
platform-specific implementation file. Ideally its setup could be moved a bit
to make it happen at the same place as the Darwin restrictions, but that change
is going to be less mechanical.
Change-Id: I496aa3c4fabf34656aba1e32b0089044ab5b99f8
When MANPATH is unset or contains an empty component, a reasonable default is
used. Previously (after 3dced96741), when MANPATH
was unset, the shell hook would only place a location containing the Lix manual
pages there, and system-wide manual pages would become unavailable in the
development shell, which is undesired. Fix the issue by including an empty
component in this case.
Change-Id: Ib3c67a831d709fe2a87520e15917eebb59397bd1
This was always in the lock file and we can simply actually print it.
The test for this is a little bit silly but it should correctly
control for my daring to exercise timezone code *and* locale code in a
test, which I strongly suspect nobody dared do before.
Sample (abridged):
```
Path: /nix/store/gaxb42z68bcr8lch467shvmnhjjzgd8b-source
Last modified: 1970-01-01 00:16:40
Inputs:
├───flake-compat: github:edolstra/flake-compat/0f9255e01c2351cc7d116c072cb317785dd33b33
│ Last modified: 2023-10-04 13:37:54
├───flake-utils: github:numtide/flake-utils/b1d9ab70662946ef0850d488da1c9019f3a9752a
│ Last modified: 2024-03-11 08:33:50
│ └───systems: github:nix-systems/default/da67096a3b9bf56a91d16901293e51ba5b49a27e
│ Last modified: 2023-04-09 08:27:08
```
Change-Id: I355f82cb4b633974295375ebad646fb6e2107f9b
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