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Let's make some space in the namespace for a v2
https://wiki.lix.systems/books/lix-contributors/page/nix-lang-v2
Change-Id: If56e6dbf680d931233aa822ef91c8832464471e4
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Flag files now properly work for all tests.
Change-Id: If652235960e8cf4120270a1b974c17586a31a157
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This failed due to https://github.com/NixOS/nixpkgs/pull/346945, which
makes a second lowdown-unsandboxed that works in nix builds, and the
regular lowdown has executables that fail closed when the sandbox setup
fails.
The actual failure here is only visible on nixos-unstable at the moment,
not 24.05, but this commit should fix it up for all versions.
Fixes: https://git.lix.systems/lix-project/lix/issues/547
Change-Id: I50c0ecb59518ef01a7c0181114c1b4c5a7c6b78b
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Change-Id: I992bc7f9e1cfcb1e4038fbe6ee04178bbf938556
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A better fix than in 104448e75d87d03d2fb0b4ac96d4da72e1dae50d, hence a
revert + the fix.
It turns out that this commit has the side-effect that when having e.g.
`StrictHostKeyChecking=accept-new` for a remote builder, the warnings à la
Warning: Permanently added 'builder' (ED25519) to the list of known hosts.
actually end up in the derivation's log whereas hostkey verification
errors don't, but only in the stderr of the `nix-build` invocation
(which was the motivation for the patch).
This change writes the stderr from the build-hook to
* the daemon's stderr, so that the SSH errors appear in the journal
(which was the case before 104448e75d87d03d2fb0b4ac96d4da72e1dae50d)
* the client's stderr, as a log message
* NOT to the drv log (this is handled via `handleJSONLogMessage`)
I tried to fix the issue for legacy-ssh as well, but failed and
ultimately decided to not bother.
I know that we'll sooner or later replace the entire component, however
this is the part of the patch I have working for a while, so I figured I
might still submit it for the time being.
Change-Id: I21ca1aa0d8ae281d2eacddf26e0aa825272707e5
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* changes:
testsuite: use xdist for parallel test running
testsuite: add a functional2 test suite based on pytest
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While debugging something else I observed that latest `main` ignores
`Control-C` on `sudo nix-build`.
After reading through the capnproto docs, it seems as if the promise
must be fulfilled to actually terminate the `promise.wait()` below.
This also applies to scenarios such as stopping the client
(`nix-build`), but the builders on the daemon-side are still running,
i.e. closes #540
Co-authored-by: eldritch horrors <pennae@lix.systems>
Change-Id: I9634d14df4909fc1b65d05654aad0309bcca8a0a
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So we received a report that the thread pool crashed due to an
Interrupted exception.
Relevant log tail:
copying path '/nix/store/0kal2k73inviikxv9f1ciaj39lkl9a87-etc-os-release' to 'ssh://192.168.0.27'...
Lix crashed. This is a bug. We would appreciate if you report it along with what caused it at https://git.lix.systems/lix-project/lix/issues with the following information included:
error (ignored): error: interrupted by the user
Exception: nix::Interrupted: error: interrupted by the user
Relevant stack trace:
4# __cxa_rethrow in /nix/store/22nxhmsfcv2q2rpkmfvzwg2w5z1l231z-gcc-13.3.0-lib/lib/libstdc++.so.6
5# nix::ignoreExceptionExceptInterrupt(nix::Verbosity) in /nix/store/ghxr2ykqc3rrfcy8rzdys0rzx9ah5fqj-lix-2.92.0-dev-pre20241005-ed9b7f4/lib/liblixutil.so
6# nix::ThreadPool::doWork(bool) in /nix/store/ghxr2ykqc3rrfcy8rzdys0rzx9ah5fqj-lix-2.92.0-dev-pre20241005-ed9b7f4/lib/liblixutil.so
7# 0x00007FA7A00E86D3 in /nix/store/22nxhmsfcv2q2rpkmfvzwg2w5z1l231z-gcc-13.3.0-lib/lib/libstdc++.so.6
8# 0x00007FA79FE99A42 in /nix/store/3dyw8dzj9ab4m8hv5dpyx7zii8d0w6fi-glibc-2.39-52/lib/libc.so.6
9# 0x00007FA79FF1905C in /nix/store/3dyw8dzj9ab4m8hv5dpyx7zii8d0w6fi-glibc-2.39-52/lib/libc.so.6
Notably, this is *not* in the main thread, so this implies that the
thread didn't get joined properly before their destructors got called.
That, in turn, should have only possibly happened because join() threw
on a previous iteration of the loop joining threads, I think. Or if it
threw while in the ThreadPool destructor. Either way we had better stop
letting Interrupted fall out of our child threads!
If:
- Interrupted was thrown inside the action in the main thread: it would
have fallen out of doWork if state->exception was already set and got
caught by ThreadPool::process, calling shutdown() and the join loop
which would crash the process entirely.
- Interrupted was thrown inside the action on a secondary thread: it
would have been caught and put into the exception field and then
possibly rethrown to fall out of the thread (since it was previously
ignoreExceptionExceptInterrupt).
The one possible hole in this hypothesis is that there is an "error
(ignored)" line in there implying that at least one Interrupted got
eaten by an ignoreExceptionInDestructor. It's also unclear whether this
got reordered because of stderr buffering.
Fixes: https://git.lix.systems/lix-project/lix/issues/542
Change-Id: I322cf050da660af78f5cb0e08ec6e6d27d09ac76
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This is capped at 12 because 3.7 seconds of startup is painful enough
and 5.5 seconds with 24 was more annoying.
Change-Id: I327db40fd98deaa5330cd9cf6de99fb07b2c1cb0
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I am tired of bad shell scripts, let me write bad python quickly
instead. It's definitely, $100%, better.
This is not planned as an immediate replacement of the old test suite,
but we::jade would not oppose tests getting ported.
What is here is a mere starting point and there is a lot more
functionality that we need.
Fixes: https://git.lix.systems/lix-project/lix/issues/488
Change-Id: If762efce69030bb667491b263b874c36024bf7b6
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* changes:
testsuite: override NIX_CONF_DIR and NIX_USER_CONF_FILES
Remove some outdated `make test` invocation suggestions
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I followed @pennae's advice and moved the constructor definition of
`AttrName` from the header file `nixexpr.hh` to `nixexpr.cc`.
Change-Id: I733f56c25635b366b11ba332ccec38dd7444e793
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The approach that was taken here was to add default values to the type
definitions rather than specify them whenever they are missing.
Now the only remaining warning is '-Wunused-parameter' which @jade said
is usually counterproductive and that we can just disable it:
https://git.lix.systems/lix-project/lix/issues/456#issuecomment-6617
So this change adds the flags '-Wall', '-Wextra' and
'-Wno-unused-parameter', so that all warnings are enabled except for
'-Wunused-parameter'.
Change-Id: Ic223a964d67ab429e8da804c0721ba5e25d53012
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Add the compile flag '-Wsign-compare' and adapt the code to fix all
cases of this warning.
Change-Id: I26b08fa5a03e4ac294daf697d32cf9140d84350d
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There was a bug report about a potential call to `memcpy` with a null
pointer which is not reproducible:
https://git.lix.systems/lix-project/lix/issues/492
This occurred in `src/libstore/filetransfer.cc` in `InnerSource::read`.
To ensure that this doesn't happen, an early return is added before
calling `memcpy` if the length of the data to be copied is 0.
This change also adds a test that ensures that when `InnerSource::read`
is called with an empty file, it throws an `EndOfFile` exception.
Change-Id: Ia18149bee9a3488576c864f28475a3a0c9eadfbb
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these two functions are now nearly trivial and much better inline into
makeGoalCommon. keeping them separate also separates information about
goal completion flows and how failure information ends up in `Worker`.
Change-Id: I6af86996e4a2346583371186595e3013c88fb082
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we can use our newfound powers of Goal::work Is A Real Promise to remove
completed goals from continuation promises. apart from being much easier
to follow it's also a lot more efficient because we have the iterator to
the item we are trying to remove, skipping a linear search of the cache.
Change-Id: Ie0190d051c5f4b81304d98db478348b20c209df5
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Goal::work() is a fully usable promise that does not rely on the worker
to report completion conditions. as such we no longer need the `notify`
field that enabled this interplay. we do have to clear goal caches when
destroying the worker though, otherwise goal promises may (incorrectly)
keep goals alive due to strong shared pointers created by childStarted.
Change-Id: Ie607209aafec064dbdf3464fe207d70ba9ee158a
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yet another duplicated field. it's the last one though.
Change-Id: I352df8d306794d262d8c9066f3be78acd40e82cf
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derivation goals still hold a BuildResult member variable since parts of
these results of accumulated in different places, but the Goal class now
no longer has such a field. substitution goals don't need it at all, and
derivation goals should also be refactored to not drop their buildResult
Change-Id: Ic6d3d471cdbe790a6e09a43445e25bedec6ed446
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the field is simply duplicated between the two, and now that we can
return WorkResults from Worker::run we no longer need both of them.
Change-Id: I82fc47d050b39b7bb7d1656445630d271f6c9830
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this will be needed to move all interesting result fields out of Goal
proper and into WorkResult. once that is done we can treat goals as a
totally internal construct of the worker mechanism, which also allows
us to fully stop exposing unclear intermediate state to Worker users.
Change-Id: I98d7778a4b5b2590b7b070bdfc164a22a0ef7190
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since we now propagate goal exceptions properly we no longer need to
check topGoals for a reason to abort early. any early abort reasons,
whether by exception or a clean top goal failure, can now be handled
by inspecting the goal result in the main loop. this greatly reduces
goal-to-goal interactions that do not happen at the main loop level.
since the underscore-free name is now available for use as variables
we'll migrate to that where we currently use `_topGoals` for locals.
Change-Id: I5727c5ea7799647c0a69ab76975b1a03a6558aa6
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drop childException since it's no longer needed. also makes
waitForInput, childFinished, and childTerminated redundant.
Change-Id: I05d88ffd323c5b5c909ac21056162f69ffb0eb9f
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Change-Id: Idd218ec1572eda84dc47accc0dcd8a954d36f098
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there's no reason to have the worker set information on goals that the
goals themselves return from their entry point. doing this in the goal
`work()` function is much cleaner, and a prerequisite to removing more
implicit strong shared references to goals that are currently running.
Change-Id: Ibb3e953ab8482a6a21ce2ed659d5023a991e7923
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this simplifies the worker loop, and lets us remove it entirely later.
note that ideally only one promise waiting for interrupts should exist
in the entire system. not one per event loop, one per *process*. extra
interrupt waiters make interrupt response nondeterministic and as such
aren't great for user experience. if anything wants to react to aborts
caused by explicit interruptions, or anything else, those things would
be much better served using RAII guards such as Finally (or KJ_DEFER).
Change-Id: I41d035ff40172d536e098153c7375b0972110d51
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this was a triumph. i'm making a note here: huge success. it's hard to
overstate my satisfaction! i'm not even angry. i'm being so sincere ri
actually, no. we *are* angry. this was one dumbass odyssey. nobody has
asked for this. but not doing it would have locked us into old, broken
protocols forever or (possibly worse) forced us to write our own async
framework building on the old did-you-mean-continuations in Worker. if
we had done that we'd be locked into ever more, and ever more complex,
manual state management all over the place. this just could not stand.
Change-Id: I43a6de1035febff59d2eff83be9ad52af4659871
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I'm very excited for cl/2016, so others will probably be excited also!
Let's add a release note.
Change-Id: Ic84a4444241aafce4cb6d5a6d1dddb47e7a7dd7b
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with async runtime scheduling we can no longer guarantee exact error
counts for builds that do not set keepGoing. the old behavior can be
recovered with a number of hacks that affect scheduling, but none of
those are very easy to follow now advisable. exact error counts will
like not be needed for almost all uses except tests, and *those* had
better check the actual messages rather than how many they got. more
messages can even help to avoid unnecessary rebuilds for most users.
Change-Id: I1c9aa7a401227dcaf2e19975b8cb83c5d4f85d64
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In 0e6b3435a14a304b8833c27d2911de7ac4e731d4, installation of the HTML manual
was accidentally dropped: setting install_dir on a custom_target only sets the
directory where something is going to be installed if it is installed at all,
but does not itself trigger installation. The latter has to be explicitly
requested, which is just what we do here to get the manual back.
Change-Id: Iff8b791de7e7cb4c8d747c2a9b1154b5fcc32fe0
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The test suite can load the global configuration files under certain
circumstances, and, though we would really rather it didn't ever do that
at all, we should at least break the mechanism.
Fixes: https://git.lix.systems/lix-project/lix/issues/474
Change-Id: Ib27cb43dd5dfaa70ac491c395b5ba308fd7bd289
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These should be meson.
Change-Id: I03687b8b03f50fb1684e7ffcd487be855052d6c2
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due to event loop scheduling behavior it's possible for a derivation
goal to fully finish (having seen all paths it was asked to create),
but to not notify the worker of this in time to prevent another goal
asking the recently-finished goal for more outputs. if this happened
the finished goal would ignore the request for more outputs since it
considered itself fully done, and the delayed result reporting would
cause the requesting goal to assume its request had been honored. if
the requested goal had finished *properly* the worker would recreate
it instead of asking for more outputs, and this would succeed. it is
thus safe to always recreate goals once they are done, so we now do.
Change-Id: Ifedd69ca153372c623abe9a9b49cd1523588814f
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main
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Change-Id: Ibb59ddc21f5d3ef7fb4c900e3413e426c201334d
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This moves the "legacy"/"nix2" commands under a new `src/legacy/`
directory, instead of being scattered around in a bunch of different
directories.
A new `liblegacy` build target is defined, and the `nix` binary is
linked against it.
Then, `RegisterLegacyCommand` is replaced with `LegacyCommand::add`
calls in functions like `registerNixCollectGarbage()`. These
registration functions are called explicitly in `src/nix/main.cc`.
See: https://git.lix.systems/lix-project/lix/issues/359
Change-Id: Id450ffc3f793374907599cfcc121863b792aac1a
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This splits `ignoreException` into `ignoreExceptionExceptInterrupt`
(which ignores all exceptions except `Interrupt`, which indicates a
SIGINT/CTRL-C) and `ignoreExceptionInDestructor` (which ignores all
exceptions, so that destructors do not throw exceptions).
This prevents many cases where Nix ignores CTRL-C entirely.
See: https://github.com/NixOS/nix/issues/7245
Upstream-PR: https://github.com/NixOS/nix/pull/11618
Change-Id: Ie7d2467eedbe840d1b9fa2e88a4e88e4ab26a87b
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Change-Id: Ic2f7bc2bd6a1879ad614e4be81a7214f64eb0e85
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Change-Id: I2d4dcedff0a278d2d8f3d264a9186dfb399275e2
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Change-Id: I38cfe8c7059251b581f1013c4213804f36b985ea
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