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This was done originally because std::smatch does not accept `const char
*` as iterators. However, this was because we should have been using
std::cmatch instead.
Change-Id: Ibe73851fd39755e883df2d33d22fed72ac0a04ae
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This is slightly more type safe and is more in line with modern C++.
Change-Id: Ia7a8df1c7788085020d1bdc941d6f9cee356144e
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Nobody has stepped up to add further support for Hurd since this code
appeared in 2010 or 2014. We don't need it.
Change-Id: I400b2031a225551ea3c71a3ef3ea9fdb599dfba3
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Fixes: 72ee25b4025257fdaab7b8e8d5d1ccc83858fdab
Change-Id: Ib59386af1415a8ed4b53af24ec22a4ffa5e5877d
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Error is pretty large, and most goals do not fail. this alone more than
halves the size of Goal on x86_64-linux, from 720 bytes down to 344. in
derived classes the difference is not as dramatic, but even the largest
derived class (`LocalDerivationGoal`) loses almost 20% of its footprint
Change-Id: Ifda8f94c81b6566eeb3e52d55d9796ec40c7bce8
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Change-Id: I3c7f17d5492a16bb54480fa1aa384b96fba72d61
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the goals are either already using std::async and merely forgot to
remove std::thread vestiges or they emulate async with threads and
promises. we can simply use async directly everywhere for clarity.
Change-Id: I3f05098310a25984f10fff1e68c573329002b500
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under owner_less it's equivalent to insert(), only sometimes a little
bit faster because it does not construct a weak_ptr if the goal is in
the set already. this small difference in performance does not matter
here and c++23 will make insert transparent anyway, so we can drop it
Change-Id: I7cbd7d6e0daa95d67145ec58183162f6c4743b15
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this should be an optional. "busy" is not an *exit* code!
Change-Id: Ic231cb27b022312b1a7a7b9602f32845b7a9c934
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Change-Id: Ia3ebd434b17052b6760ce74d8e20025a72148613
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Change-Id: I1a051be495318a507d07f6d0a6b157616e26774c
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*accidentally* overriding a function is almost guaranteed to be an
error. overriding a function without labeling it as such is merely
bad style, but bad style that makes the code harder to understand.
Change-Id: Ic0594f3d1604ab6b3c1a75cb5facc246effe45f0
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Change-Id: Ib986ece0ab2eff83e7abd7f1f915cd8f761827ad
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Commit 0109368c3faf5516aeddde45e8dc3c33e7163838 missed to include a required
header, which is not noticed when the precompiled header is enabled because
it's included in that. Also include it in the file so that the build without
precompiled header works too.
Change-Id: Id7a7979684b64f937f7f8191612952d73c113015
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decompression" into main
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it" into main
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Due to a leftover from a previous version where the buffer was allocated on the
stack, the change introduced in commit 4ec87742a196d8ed8f41b41ef039706ce791448d
accidentally passes the size of a pointer as the size of the buffer to the
decompressor. Since the former is much smaller (usually 8 bytes instead of 64
kilobytes), this is safe, but leads to considerable overhead; most notably, due
to excessive progress reports, which happen for each chunk. Pass the proper
buffer size instead.
Change-Id: If4bf472d33e21587acb5235a2d99e3cb10914633
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This commit adds a new helper template function to gc-alloc.hh (which is
probably where you want to look at first, O great reviewer [custom file
ordering in review diffs when]), which uses a type argument to determine
the size to allocate, rather than making the caller use sizeof().
Change-Id: Ib5d138d91a28bdda304a80db24ea9fb08669ad22
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The purpose of this function has little to do with immutability. Value's
strings are never mutated, and the point of this function is to
singleton empty strings.
Change-Id: Ifd41dd952409d54e4d3de9ab59064e6928b0e480
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Change-Id: Icc4b367e4f670d47256f62a3a002cd248a5c2d3b
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SimpleLogger is not fully thread-safe, and all loggers that wrap it are
also not safe accordingly. this does not affect much, but in rare cases
it can cause interleaving of messages on stderr when used with the json
or raw log formats. the fix applied here is a bit of a hack, but fixing
this properly requires rearchitecting the logger infrastructure. nested
loggers are not the most natural abstraction here, and it is biting us.
Change-Id: Ifbf34fe1e85c60e73b59faee50e7411c7b5e7c12
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it's only used once, and even that one use is highly questionable. more
instances of warnOnce should be much more principled than this has been
Change-Id: I5856570c99cb44462e700d753d0c706a5db03c4b
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If useChroot = false, and user namespaces aren't available for some
reason (e.g. within a Docker container), this fixes a pointless warning
being emitted, as we would never attempt to use them even if they were
available.
Change-Id: Ibcee91c088edd2cd19e70218d5a5802bff8f537b
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This removes a *whole load* of variables from scope and enforces thread
boundaries with the type system.
There is not much change of significance in here, so the things to watch
out for while reviewing it are primarily that the destructor ordering
may have changed inadvertently, I think.
Change-Id: I3cd87e6d5a08dfcf368637407251db22a8906316
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* changes:
Fixup a bunch of references to nixos.org manuals
Add release notes for removing overflow from Nix language
expr: fix a compiler warning about different signs in comparison
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* changes:
doc/release-notes: add for pretty printing improvements
libexpr/print: do not show elided nested items when there are none
libexpr/print: never show empty attrsets or derivations as «repeated»
libexpr/print: pretty-print idempotently
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(plus one reference to CppNix github)
Change-Id: Id8b3d2897f3b54e286861805cfd421adc4d5de47
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Change-Id: Ib75ab5b8b4d879035d7ee7678f9cd0c491a39c0a
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We know that variable is >=0, so we can just cast it to unsigned.
Change-Id: I3792eeb3ca43e6a507cc44c1a70584d42b2acd7b
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* changes:
docs: document the actual comparison rules instead of lies
daemon: remove workaround for macOS kernel bug that seems fixed
daemon: fix a crash bug "FATAL: exception not rethrown"
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Change-Id: I829581a3f5b8b742e6c866dcdbbc635f91afceb5
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When the configured maximum depth has been reached, attribute sets and lists
are printed with ellipsis to indicate the elision of nested items. Previously,
this happened even in case the structure being printed is empty, so that such
items do not in fact exist. This is confusing, so stop doing it.
Change-Id: I0016970dad3e42625e085dc896e6f476b21226c9
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The repeated value detection logic exists so that the occurrence of large
common substructures does not fill up the screen or the computer's memory.
However, empty attribute sets and derivations (when their detection is enabled)
are always cheap to print, and in practice I have observed them to make up a
significant majority of the cases where I was annoyed by the repeated value
detection kicking in. Furthermore, `nix-instantiate --eval` already disables
this logic for empty attribute sets, and empty lists are already exempted
everywhere. For these reasons, always print empty attribute sets and
derivations as what they are.
Change-Id: I5dac8e7739f9d726b76fd0521ec46f38af94463f
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When pretty-printing is enabled, previously an unforced thunk would trigger
indentation, even when it subsequently does not evaluate to a nested structure.
The resulting output looked inconsistent, and furthermore pretty-printing was
not idempotent (since pretty-printing the same value again, which is now fully
evaluated, will not trigger indentation).
When strict evaluation is enabled, force the item before inspecting its type,
so that it is properly known whether it contains a nested structure.
Furthermore, there is no need to cause indentation for unforced thunks, since
the very next operation will be printing them as `«thunk»`.
This is mostly a port of https://github.com/NixOS/nix/pull/11100 , but we only
force the item when it's going to be forced anyway due to strict
pretty-printing, and a new test was written since the REPL testing framework in
Lix is different.
Co-Authored-By: Robert Hensing <robert@roberthensing.nl>
Change-Id: Ib7560fe531d09e05ca6b2037a523fe21a26d9d58
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into main
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The insertion marker comment broke the list into two parts, the first
containing only the link to the upcoming release notes and the second the
past releases. This confused the generator, leading to the first part being
discarded. Indent the marker comment so that it's syntactically part of the
preceding item, and in particular doesn't split the list any more.
Change-Id: I357c51bb03e4e0d79a76d30158615fd9eda95ea8
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Change-Id: I93aab93c069bb3989c3f8d17e0862899e6f76865
Signed-off-by: Raito Bezarius <raito@lix.systems>
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Due to a mistake in the grammar, a dollar character implicitly escapes a second
dollar character that immediately follows, so that it cannot start an
interpolation. Unfortunately, this behaviour has since come to be relied upon,
so it cannot be fixed. Furthermore, the documentation on regular strings did
not mention this behaviour at all, while in the case of indented strings it was
rather implicit.
Mention it explicitly in both cases, and describe how an interpolation can
follow a dollar character (namely, by escaping that). Since we have to touch
that section anyway, state that any character (other than n, r, and t; but
notably including `$` even if not succeeded by `{`) can be escaped using a
backslash in regular strings.
Change-Id: I7e5d68a9a4130eec98ce8218b485168f4b31a677
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Previous test implementation assumed that grep supports newlines
in patterns. It doesn't, so tests spuriously passed, even though
some tests outputs were broken.
This patches output (and expected output) before grepping,
so there're no newlines in pattern.
Change-Id: Ie6561f9f2e18b83d976f162269d20136e2595141
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we no longer need these since sinkToSource and sourceToSink are gone.
Change-Id: Ibbf440e2cf71bf3e9f3b833af2d78a21fb1b3193
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Change-Id: I1379841299713175d0225b82a67f50660f9eb5e2
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Change-Id: Id1ee0d2ad4a3774f4bbb960d76f0f76ac4f3eff9
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we no longer need these since we're no longer using sinks to serialize things.
Change-Id: Iffb1a3eab33c83f611c88fa4e8beaa8d5ffa079b
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this is cursed. deeply and profoundly cursed. under NO CIRCUMSTANCES
must protocol serializer helpers be applied to temporaries! doing so
will inevitably cause dangling references and cause the entire thing
to crash. we need to do this even so to get rid of boost coroutines,
and likewise to encapsulate the serializers we suffer today at least
a little bit to allow a gradual migration to an actual IPC protocol.
(this isn't a problem that's unique to generators. c++ coroutines in
general cannot safely take references to arbitrary temporaries since
c++ does not have a lifetime system that can make this safe. -sigh-)
Change-Id: I2921ba451e04d86798752d140885d3c5cc08e146
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this doesn't have a test because this code path is only reached by
clients that predate 2.4, and we really should not be caring about
those any more right now. even the test suite doesn't, and the few
tests that might care are disabled because they will not even work
Change-Id: Id9eb190065138fedb2c7d90c328ff9eb9d97385b
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this is not completely necessary at this point because the parser right
now already returns a generator to pass through all input data it read,
but the nar parser *was* very lax and would accept nars that weren't in
canonical form (defined as the form dumpPath would return). nar hashing
depends on these things, and as such rewriting the parser now allows us
to reject non-canonical nars that extract to the same store contents as
their canonical counterpart but have different nar hashes despite that.
Change-Id: Iccd319e3bd5912d8297014c84c495edc59019bb7
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* changes:
nix3-upgrade-nix: always use the /new/ nix-env to perform the installation
libutil: implement a realPath() utility
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