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If repair found a corrupted/missing path that depended on a
multiple-output derivation, and some of the outputs of the latter were
not present, it failed with a message like
error: path ‘/nix/store/cnfn9d5fjys1y93cz9shld2xwaibd7nn-bash-4.3-p42-doc’ is not valid
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Also show types when nix cannot compare values of different types.
This is also more consistent since types are already shown when comparing values of the same not comparable type.
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For example, "${{ foo = "bar"; __toString = x: x.foo; }}" evaluates
to "bar".
With this, we can delay calling functions like mkDerivation,
buildPythonPackage, etc. until we actually need a derivation, enabling
overrides and other modifications to happen by simple attribute set
update.
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POSIX compliant directory access (fixes build on Solaris)
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`BUFSIZ` is defined in header `<cstdio>`.
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The text is just a conversion of comment from src/libexpr/primops.cc
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This makes Darwin consistent with Linux: Nix expressions can't break
out of the sandbox unless relaxed sandbox mode is enabled.
For the normal sandbox mode this will require fixing #759 however.
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Otherwise, since the call to write a "d" character to the lock file
can fail with ENOSPC, we can get an unhandled exception resulting in a
call to terminate().
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Caused by 8063fc497ab78fa72962b93874fe25dcca2b55ed. If tmpDir !=
tmpDirInSandbox (typically when there are multiple concurrent builds
with the same name), the *Path attribute would not point to an
existing file. This caused Nixpkgs' writeTextFile to write an empty
file. In particular this showed up as hanging VM builds (because it
would run an empty run-nixos-vm script and then wait for it to finish
booting).
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Hopefully fixes Darwin sandbox regression introduced in
8063fc497ab78fa72962b93874fe25dcca2b55ed.
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We should probably disallow these, but until then, we shouldn't barf
with an assertion failure.
Fixes #738.
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Also, use "#if __APPLE__" instead of "#if SANDBOX_ENABLED" to prevent
ambiguity.
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This is arguably nitpicky, but I think this new formulation is even
clearer. My thinking is that it's easier to comprehend when the
calculated hash value is displayed close to the output path. (I think it
is somewhat similar to eliminating double negatives in logic
statements.)
The formulation is inspired / copied from the OpenEmbedded build tool,
bitbake.
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Rather than using $<host-TMPDIR>/nix-build-<drvname>-<number>, the
temporary directory is now always /tmp/nix-build-<drvname>-0. This
improves bitwise-exact reproducibility for builds that store $TMPDIR
in their build output. (Of course, those should still be fixed...)
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edolstra:
“…since callers of readDirectory have to handle the possibility of
DT_UNKNOWN anyway, and we don't want to do a stat call for every
directory entry unless it's really needed.”
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autoCallFunction now auto-calls functors
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Also, make the FreeBSD checks conditional on FreeBSD.
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Print license information on '--xml --meta'
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FreeBSD support with knowledge about Linux emulation
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As discussed in NixOS/nixpkgs#11001, we still need some of the old
sandbox mechanism.
This reverts commit d760c2638c9e1f4b8cd9b4ec90d68bf0c76a800b.
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The nixpkgs manual prescribes the use of values from stdenv.lib.licenses
for the meta.license attribute. Those values are attribute sets and
currently skipped when running nix-env with '--xml --meta'. This has the
consequence that also nixpkgs-lint will report missing licenses.
With this commit nix-env with '--xml --meta' will print all attributes
of an attribute set that are of type tString. For example the output for
the package nixpkgs.hello is
<meta name="license" type="strings">
<string type="url" value="http://spdx.org/licenses/GPL-3.0+" />
<string type="shortName" value="gpl3Plus" />
<string type="fullName" value="GNU General Public License v3.0 or later" />
<string type="spdxId" value="GPL-3.0+" />
</meta>
This commit fixes nixpkgs-lint, too.
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Temporarily allow derivations to describe their full sandbox profile.
This will be eventually scaled back to a more secure setup, see the
discussion at #695
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Nix reports a hash mismatch saying:
output path ‘foo’ should have sha256 hash ‘abc’, instead has ‘xyz’
That message is slightly ambiguous and some people read that statement
to mean the exact opposite of what it is supposed to mean. After this
patch, the message will be:
Nix expects output path ‘foo’ to have sha256 hash ‘abc’, instead it has ‘xyz’
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- rename options but leav old names as lower-priority aliases,
also "-dirs" -> "-paths" to get closer to the meaning
- update docs to reflect the new names (old aliases are not documented),
including a new file with release notes
- tests need an update after corresponding changes to nixpkgs
- __noChroot is left as it is (after discussion on the PR)
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Passing "--option build-repeat <N>" will cause every build to be
repeated N times. If the build output differs between any round, the
build is rejected, and the output paths are not registered as
valid. This is primarily useful to verify build determinism. (We
already had a --check option to repeat a previously succeeded
build. However, with --check, non-deterministic builds are registered
in the DB. Preventing that is useful for Hydra to ensure that
non-deterministic builds don't end up getting published at all.)
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default"
This reverts commit 79ca5033329053caa364bb2f7e50953f859cc97f. Ouch,
never noticed this. We definitely don't want to allow builds to have
arbitrary access to /bin and /usr/bin, because then they can (for
instance) bring in a bunch of setuid programs. Also, we shouldn't be
encouraging the use of impurities in the default configuration.
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If automatic store optimisation is enabled, and a hard-linked file in
the store gets corrupted, then the corresponding .links entry will
also be corrupted. In that case, trying to repair with --repair or
--repair-path won't work, because the new "good" file will be replaced
by a hard link to the corrupted file. We can catch most of these cases
by doing a sanity-check on the file sizes.
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d_type is not part of the POSIX spec unfortunately.
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> I made this change for two reasons:
> 1. Darwin's locale data doesn't appear to be open source
> 2. Privileged processes will always use /usr/share/locale regardless of environment variables
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Fixes #679.
Note: on x86_64, SHA-512 is considerably faster than SHA-256 (198 MB/s
versus 131 MB/s).
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