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copyStorePath() now pipes the output of srcStore->narFromPath()
directly into dstStore->addToStore(). The sink used by the former is
converted into a source usable by the latter using
boost::coroutine2. This is based on [1].
This reduces the maximum resident size of
$ nix build --store ~/my-nix/ /nix/store/b0zlxla7dmy1iwc3g459rjznx59797xy-binutils-2.28.1 --substituters file:///tmp/binary-cache-xz/ --no-require-sigs
from 418592 KiB to 53416 KiB. (The previous commit also reduced the
runtime from ~4.2s to ~3.4s, not sure why.) A further improvement will
be to download files into a Sink.
[1] https://github.com/NixOS/nix/compare/master...Mathnerd314:dump-fix-coroutine#diff-dcbcac55a634031f9cc73707da6e4b18
Issue #1969.
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This allows decompression to happen in O(1) memory.
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libexpr: Recognize newline in more places in lexer
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The certificates won't get any better if we retry.
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Fixes https://github.com/NixOS/nixpkgs/issues/37114.
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Wrap thread local in function for Cygwin
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Actually fixes #1976.
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This is UB, even if the size is 0. See #1976.
Fixes #1976.
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Note that this only requires headers from boost so it doesn't add a
runtime dependency.
Also, use Nixpkgs 18.03.
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nix search: tests and fix #1893 and part of #1892
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Fixes #1826. See #1352 for a previous instance of a similar change.
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It was holding on to a Value* (i.e. a std::shared_ptr<ValidPathInfo>*)
outside of the pathInfoCache lock, so the std::shared_ptr could be
destroyed between the release of the lock and the decrement of the
std::shared_ptr refcount. This can happen if more than
'path-info-cache-size' paths are added in the meantime, *or* if
clearPathInfoCache() is called. The hydra-queue-runner queue monitor
thread periodically calls the later, so is likely to trigger a crash.
Fixes https://github.com/NixOS/hydra/issues/542.
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Doing so prevents emacs tags from working, as well as makes the code extremely
confusing for a newbie.
In the prior state, if someone wants to find the definition of "ExprApp" for
example, a grep through the code reveals nothing. Since the definition could be
hiding in numerous ".h" files, it's really difficult to find. This personally
took me several hours to figure out.
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rand() -> random(), since we use srandom().
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rand() requires we call srand() instead,
but might as well use random().
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Move definition of destructor to logging.cc for
access to util.hh's ignoreException.
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This can be iterated on and currently leaves out settings we know we
want to forward, but it fixes #1713 and fixes #1935 and isn't
fundamentally broken like the status quo. Future changes are suggested
in a comment.
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Flex's regexes have an annoying feature: the dot matches everything
except a newline. This causes problems for expressions like:
"${0}\
"
where the backslash-newline combination matches this rule instead of the
intended one mentioned in the comment:
<STRING>\$|\\|\$\\ {
/* This can only occur when we reach EOF, otherwise the above
(...|\$[^\{\"\\]|\\.|\$\\.)+ would have triggered.
This is technically invalid, but we leave the problem to the
parser who fails with exact location. */
return STR;
}
However, the parser actually accepts the resulting token sequence
('"' DOLLAR_CURLY 0 '}' STR '"'), which is a problem because the lexer
rule didn't assign anything to yylval. Ultimately this leads to a crash
when dereferencing a NULL pointer in ExprConcatStrings::bindVars().
The fix does change the syntax of the language in some corner cases
but I think it's only turning previously invalid (or crashing) syntax
to valid syntax. E.g.
"a\
b"
and
''a''\
b''
were previously syntax errors but now both result in "a\nb".
Found by afl-fuzz.
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Otherwise, running e.g.
nix-instantiate --eval -E --strict 'builtins.replaceStrings [""] ["X"] "abc"'
would just hang in an infinite loop.
Found by afl-fuzz.
First attempt of this was reverted in e2d71bd1862cdda because it caused
another infinite loop, which is fixed now and a test added.
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Note that clearenv() is not available on macOS.
Fixes #1907.
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This is important since this is given as an example.
Other patterns containing "empty search string" will still
be handled differently on different platforms ("asdf|")
but that's less of an issue.
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This is exposed by the tests added previously,
and resolves the error reported in #1892:
"expected JSON value".
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E.g.
nix run --store ~/my-nix -f channel:nixos-17.03 hello -c hello
This problem was mentioned in #1897.
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This reverts commit ddc58e789636e1b94149c342575d92583251fbf6.
https://hydra.nixos.org/eval/1435322
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The overhead of sandbox builds is a problem on NixOS (since building a
NixOS configuration involves a lot of small derivations) but not for
typical non-NixOS use cases. So outside of NixOS we can enable it.
Issue #179.
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Alos add a command "nix ping-store" to make it easier to see if Nix
can connect to a remote builder (e.g. 'nix ping-store --store
ssh://mac').
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This reverts commit 4ea9707591beceacf9988b3c185faf50da238403.
It causes an infinite loop in Nixpkgs evaluation,
e.g. "nix-instantiate -A hello" hung.
PR #1886.
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maybe a left-over from nix-store -r ?
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The assertion is broken because there is no one-to-one mapping from
length of a base64 string to the length of the output.
E.g.
"1q69lz7Empb06nzfkj651413n9icx0njmyr3xzq1j9q=" results in a 32-byte output.
"1q69lz7Empb06nzfkj651413n9icx0njmyr3xzq1j9qy" results in a 33-byte output.
To reproduce, evaluate:
builtins.derivationStrict {
name = "0";
builder = "0";
system = "0";
outputHashAlgo = "sha256";
outputHash = "1q69lz7Empb06nzfkj651413n9icx0njmyr3xzq1j9qy";
}
Found by afl-fuzz.
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Otherwise, running e.g.
nix-instantiate --eval -E --strict 'builtins.replaceStrings [""] ["X"] "abc"'
would just hang in an infinite loop.
Found by afl-fuzz.
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E.g. nix-instantiate --eval -E 'abort "\r"' hangs.
Found by afl-fuzz.
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Avoids ~180,000 string temporaries created when evaluating a headless
NixOS system.
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https://hydra.nixos.org/eval/1434547#tabs-now-fail
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Also add some examples to nix --help.
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