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like kj::joinPromisesFailFast this allows waiting for the results of
multiple promises at once, but unlike it not all input promises must
be complete (or any of them failed) for results to become available.
Change-Id: I0e4a37e7bd90651d56b33d0bc5afbadc56cde70c
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like a normal semaphore, but with awaitable acquire actions. this is
primarily intended as an intermediate concurrency limiting device in
the Worker code, but it may find other uses over time. we do not use
std::counting_semaphore as a base because the counter of that is not
inspectable as will be needed for Worker. we also do not need atomic
operations for cross-thread consistency since we don't have multiple
threads (thanks to kj event loops being confined to a single thread)
Change-Id: Ie2bcb107f3a2c0185138330f7cbba4cec6cbdd95
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this one is also run from a gcc stdenv.
Change-Id: I91ff6915c6689ece15224f348f54367cff5d2b5a
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Without this, verifying TLS certificates would fail on macOS, as well
as any system that doesn't have a certificate file at /etc/ssl/certs/ca-certificates.crt,
which includes e.g. Fedora.
Change-Id: Iaa2e0e9db3747645b5482c82e3e0e4e8f229f5f9
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This is better for privacy and to avoid leaking netrc credentials in a
MITM attack, but also the assumption that we check the hash no longer
holds in some cases (in particular for impure derivations).
Partially reverts https://github.com/NixOS/nix/commit/5db358d4d78aea7204a8f22c5bf2a309267ee038.
(cherry picked from commit c04bc17a5a0fdcb725a11ef6541f94730112e7b6)
(cherry picked from commit f2f47fa725fc87bfb536de171a2ea81f2789c9fb)
(cherry picked from commit 7b39cd631e0d3c3d238015c6f450c59bbc9cbc5b)
Upstream-PR: https://github.com/NixOS/nix/pull/11585
Change-Id: Ia973420f6098113da05a594d48394ce1fe41fbb9
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Previously we would only crash the program for bad HintFmt calls.
nix::fmt should also crash.
Change-Id: I4ba0abeb8557b208bd9c0be624c022a60446ef7e
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These stack traces kind of suck for the reasons mentioned on the
CppTrace page here (no symbols for inline functions is a major one):
https://github.com/jeremy-rifkin/cpptrace
I would consider using CppTrace if it were packaged, but to be honest, I
think that the more reasonable option is actually to move entirely to
out-of-process crash handling and symbolization.
The reason for this is that if you want to generate anything of
substance on SIGSEGV or really any deadly signal, you are stuck in
async-signal-safe land, which is not a place to be trying to run a
symbolizer. LLVM does it anyway, probably carefully, and chromium *can*
do it on debug builds but in general uses crashpad:
https://source.chromium.org/chromium/chromium/src/+/main:base/debug/stack_trace_posix.cc;l=974;drc=82dff63dbf9db05e9274e11d9128af7b9f51ceaa;bpv=1;bpt=1
However, some stack traces are better than *no* stack traces when we get
mystery exceptions falling out the bottom of the program. I've also
promoted the path for "mystery exceptions falling out the bottom of the
program" to hard crash and generate a core dump because although there's
been some months since the last one of these, these are nonetheless
always *atrociously* diagnosed.
We can't improve the crash handling further until either we use Crashpad
(which involves more C++ deps, no thanks) or we put in the ostensibly
work in progress Rust minidump infrastructure, in which case we need to
finish full support for Rust in libutil first.
Sample report:
Lix crashed. This is a bug. We would appreciate if you report it at https://git.lix.systems/lix-project/lix/issues with the following information included:
Exception: std::runtime_error: lol
Stack trace:
0# nix::printStackTrace() in /home/jade/lix/lix3/build/src/nix/../libutil/liblixutil.so
1# 0x000073C9862331F2 in /home/jade/lix/lix3/build/src/nix/../libmain/liblixmain.so
2# 0x000073C985F2E21A in /nix/store/p44qan69linp3ii0xrviypsw2j4qdcp2-gcc-13.2.0-lib/lib/libstdc++.so.6
3# 0x000073C985F2E285 in /nix/store/p44qan69linp3ii0xrviypsw2j4qdcp2-gcc-13.2.0-lib/lib/libstdc++.so.6
4# nix::handleExceptions(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::function<void ()>) in /home/jade/lix/lix3/build/src/nix/../libmain/liblixmain.so
5# 0x00005CF65B6B048B in /home/jade/lix/lix3/build/src/nix/nix
6# 0x000073C985C8810E in /nix/store/dbcw19dshdwnxdv5q2g6wldj6syyvq7l-glibc-2.39-52/lib/libc.so.6
7# __libc_start_main in /nix/store/dbcw19dshdwnxdv5q2g6wldj6syyvq7l-glibc-2.39-52/lib/libc.so.6
8# 0x00005CF65B610335 in /home/jade/lix/lix3/build/src/nix/nix
Change-Id: I1a9f6d349b617fd7145a37159b78ecb9382cb4e9
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We don't support GCC anymore for building, so the overlay currently
fails to evaluate with
error: assertion '((stdenv).cc.isClang || lintInsteadOfBuild)' failed
`clangStdenv` seems like a reasonable default now.
Noticed while upgrading Lix for our Hydra fork.
Change-Id: I948a7c03b3e5648fc7c596f96e1b8053a9e7f92f
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Previously, Doxygen needed to be ran from the project's source root dir
due to the relative paths in the config's `INPUT` tag. We now preprocess
the relative paths by prefixing them with the absolute path of the
project's source root dir. The HTML output remains unchanged.
Fixes: https://git.lix.systems/lix-project/lix/issues/240
Change-Id: I85f099c22bfc5fdbf26be27c2db7dcbc8155c8b2
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This caused an infinite loop before since it would just keep asking the
underlying source for more data.
In practice this happened because an HTTP server served a
response to a HEAD request (for which curl will not retrieve any body or
call our write callback function) with Content-Encoding: br, leading to
decompressing nothing at all and going into an infinite loop.
This adds a test to make sure none of our compression methods do that
again, as well as just patching the HTTP client to never feed empty data
into a compression algorithm (since they absolutely have the right to
throw CompressionError on unexpectedly-short streams!).
Reported on Matrix: https://matrix.to/#/!lymvtcwDJ7ZA9Npq:lix.systems/$8BWQR_zKxCQDJ40C5NnDo4bQPId3pZ_aoDj2ANP7Itc?via=lix.systems&via=matrix.org&via=tchncs.de
Change-Id: I027566e280f0f569fdb8df40e5ecbf46c211dad1
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The legitimate output of `nix path-info` may visually interfere with the
progress bar, by appending to stale progress output before the latter has been
erased. Conveniently, all expensive operations (evaluation or building) have
already been performed before, so we can simply wipe the progress bar at this
point to fix the issue.
Fixes: https://git.lix.systems/lix-project/lix/issues/343
Change-Id: Id9a807a5c882295b3e6fbf841f9c15dc96f67f6e
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editline's dep on ncurses is a runtime one, so it should be in
buildInputs, not nativeBuildInputs.
CC: https://git.lix.systems/lix-project/lix/issues/527
Change-Id: I631c192a55677b0cc77faa7511986f1fa2205e91
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This test suite was in desperate need of using the parameterization
available with gtest, and was a bunch of useless duplicated code. At
least now it's not duplicated code, though it still probably should be
more full of property tests.
Change-Id: Ia8ccee7ef4f02b2fa40417b79aa8c8f0626ea479
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Lix cannot be built with GNU readline, and we would "rather not" be GPL.
Change-Id: I0e86f0f10dab966ab1d1d467fb61fd2de50c00de
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See https://git.lix.systems/lix-project/lix/issues/496.
The core idea is to be able to do e.g.
nix-instantiate -A some-nonfree-thing --arg config.allowUnfree true
which is currently not possible since `config.allowUnfree` is
interpreted as attribute name with a dot in it.
In order to change that (probably), Jade suggested to find out if there
are any folks out there relying on this behavior.
For such a use-case, it may still be possible to accept strings, i.e.
`--arg '"config.allowUnfree"'.
Change-Id: I986c73619fbd87a95b55e2f0ac03feaed3de2d2d
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Apparently forgejo has a more creative interpretation of \(\) than I was
hoping in their markdown parser and thought it was maths. I have no idea
then how you put a link in parens next to another square-bracket link,
but I am not going to worry about it.
There were several more typos, which I also fixed.
Fixes: https://git.lix.systems/lix-project/lix/issues/517
Change-Id: I6b144c6881f92ca60ba72a304ce7a0bcb9c6659a
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into main
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* changes:
archive: refactor bad mutable-state API in the NAR parse listener
archive: rename ParseSink to NARParseVisitor
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* Move the extended attribute deletion after the hardlink sanity check. We
shouldn't be removing extended attributes on random files.
* Make the entity owner-writable before attempting to remove extended
attributes, since this operation usually requires write access on the file,
and we shouldn't fail xattr deletion on a file that has been made unwritable
by the builder or a previous canonicalisation pass.
Fixes: https://git.lix.systems/lix-project/lix/issues/507
Change-Id: I7e6ccb71649185764cd5210f4a4794ee174afea6
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This is not a detailed diagnosis, and it's not worth writing one, tbh.
This error basically never happens in normal operation, so diagnosing it
by changing the error on macOS is good enough.
Relevant: https://git.lix.systems/lix-project/lix-installer/issues/24
Relevant: https://git.lix.systems/lix-project/lix-installer/issues/18
Relevant: https://git.lix.systems/lix-project/lix/issues/521
Change-Id: I03701f917d116575c72a97502b8e1617679447f2
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Remove the mutable state stuff that assumes that one file is being
written a time. It's true that we don't write multiple files
interleaved, but that mutable state is evil.
Change-Id: Ia1481da48255d901e4b09a9b783e7af44fae8cff
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When generating shell completions, no logging output should be visible because
it would destroy the shell prompt. Originally this was attempted to be done by
simply disabling the progress bar (ca946860ce6ce5d4800b0d93d3f83c30d3c953c0),
since the situation is particularly bad there (the screen clearing required for
the rendering ends up erasing the shell prompt). Due to overlooking the
implementation of this hack, it was accidentally undone during a later change
(0dd1d8ca1cdccfc620644a7f690ed35bcd2d1e74).
Since even with the hack correctly in place, it is still possible to mess up
the prompt by logging output (for example warnings for disabled experimental
features, or messages generated by `builtins.trace`), simply send it to the bit
bucket where it belongs. This was already done for bash and zsh
(9d840758a8d195e52e8b7d08cd9c15f6b8259724), and it seems that fish was simply
missed at that time. The last trace of the no-longer-working and obsolete hack
is deleted too.
Fixes: https://git.lix.systems/lix-project/lix/issues/513
Change-Id: I59f1ebf90903034e2059298fa8d76bf970bc3315
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This vendors the patch added in cl/1883 to avoid GitHub
garbage-collecting the commits we're referring to.
As @emilazy pointed out on GitHub:
> GitHub can garbage‐collect unmerged PR commits if they are later
> force‐pushed, which means that code review in upstreams can cause
> Nixpkgs builds to fail to reproduce in future.
See: https://github.com/NixOS/nixpkgs/pull/341131#discussion_r1753046220
See: https://github.com/troglobit/editline/pull/70
See: https://gerrit.lix.systems/c/lix/+/1883
Change-Id: Ifff522f7f23310d6dbe9efc72fd40be5500ae872
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- Rename the listener to not be called a "sink". If it were a "sink" it
would be eating bytes and conform with any of the Nix sink stuff
(maybe FileHandle should be a Sink itself! but that's a later CL's
problem). This is a parser listener.
- Move the RetrieveRegularNARSink thing into store-api.cc, which is its
only usage, and fix it to actually do what it is stated to do: crash
if its invariants are violated.
It's, of course, used to erm, unpack single-file NAR files, generated
via a horrible contraption of sources and sinks that looks like a
plumbing blueprint. Refactoring that is a future task.
- Add a description of the invariants of NARParseVisitor in preparation
of refactoring it.
Change-Id: Ifca1d74d2947204a1f66349772e54dad0743e944
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This applies https://github.com/troglobit/editline/pull/70 to our build
of editline, which translates `meta-left` and `meta-right` into
`fd_word` and `bk_word`. This makes `nix repl` soooo much nicer to use!
Note: My terminal renders `meta-left` as `\e\e[C` and `meta-right` as
`\e\e[D`.
Closes https://git.lix.systems/lix-project/lix/issues/501
Change-Id: I048b10cf17231bbf4e6bf38e1d1d8572cedaa194
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* changes:
libfetchers: serialise accept-flake-config properly
libstore: declare SandboxMode JSON serialisation in the header
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while gcc 12 and older miscompile our generators, gcc 13 and older
outright crash on kj coroutines. (newer gcc versions may fix this)
Change-Id: I19f12c8c147239680eb0fa5a84ef5c7de38c9263
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using a proper event loop basis we no longer have to worry about most of
the intricacies of poll(), or platform-dependent replacements for it. we
may even be able to use the event loop and its promise system for all of
our scheduling in the future. we don't do any real async processing yet,
this is just preparation to separate the first such change from the huge
api design difference with the async framework we chose (kj from capnp):
kj::Promise, unlike std::future, doesn't return exceptions unmangled. it
instead wraps any non-kj exception into a kj exception, erasing all type
information and preserving mostly the what() string in the process. this
makes sense in the capnp rpc use case where unrestricted exception types
can't be transferred, and since it moves error handling styles closer to
a world we'd actually like there's no harm in doing it only here for now
Change-Id: I20f888de74d525fb2db36ca30ebba4bcfe9cc838
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we're using boost::outcome rather than leaf or stl types because stl
types are not available everywhere and leaf does not provide its own
storage for error values, relying on thread-locals and the stack. if
we want to use promises we won't have a stack and would have to wrap
everything into leaf-specific allocating wrappers, so outcome it is.
Change-Id: I35111a1f9ed517e7f12a839e2162b1ba6a993f8f
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When the multi-line log format is enabled, the progress bar usually occupies
multiple lines on the screen. When stopping the progress bar, only the last
line was wiped, leaving all others visible on the screen. Erase all lines
belonging to the progress bar to prevent these leftovers.
Asking the user for input is theoretically affected by a similar issue, but
this is not observed in practice since the only place where the user is asked
(whether configuration options coming from flakes should be accepted) does not
actually have multiple lines on the progress bar. However, there is no real
reason to not fix this either, so let's do it anyway.
Change-Id: Iaa5a701874fca32e6f06d85912835d86b8fa7a16
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The AcceptFlakeConfig type used was missing its JSON serialisation definition,
so it was incorrectly serialised as an integer, ending up that way for example
in the nix.conf manual page. Declare a proper serialisation.
Change-Id: If8ec210f9d4dd42fe480c4e97d0a4920eb66a01e
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The JSON serialisation should be declared in the header so that all translation
units can see it when needed, even though it seems that it has not been used
anywhere else so far. Unfortunately, this means we cannot use the
NLOHMANN_JSON_SERIALIZE_ENUM convenience macro, since it uses a slightly
different signature, but the code is not too bad either.
Change-Id: I6e2851b250e0b53114d2fecb8011ff1ea9379d0f
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Change-Id: If6c69a5e16d1ccd223fba392890f08f0032fb754
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