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libexpr: Fix manual link in error message
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It was changed to the old manual in https://github.com/NixOS/nix/commit/8895fa70a4b05ddebbb5a23ea96464d5e01345fb
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* libexpr: fix builtins.split example
The example was previously indicating that multiple whitespaces would be
collapsed into a single captured whitespace. That isn't true and was
likely a mistake when being documented initially.
* Fix segfault on unitilized list when printing value
Since lists are just chunks of memory the individual elements in the
list might be unitilized when a programming error happens within Nix.
In this case the values are null-initialized (at least with Boehm GC)
and we can avoid a nullptr deref when printing them.
I ran into this issue while ensuring that new expression tests would
show the actual value on an assertion failure.
This is unlikely to cause any runtime performance regressions as
printing values is not really in the hot path (unless the repl is the
primary use case).
* Add operator<< for ValueTypes
* Add libexpr tests
This introduces tests for libexpr that evalulate various trivial Nix
language expressions and primop invocations that should be good smoke
tests wheter or not the implementation is behaving as expected.
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Lowdown doesn't respect '.cols' exactly (maybe because of the
whitespace in front of each line), so adjust .cols a bit.
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Fix the parsing of the sourcehut refs file
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In particular, use std::make_shared and enumerate(). Also renamed some
fields to fit naming conventions.
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nix: Add forgotten null check in AttrCursor::getListOfStrings()
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Regression test for <https://github.com/NixOS/nix/issues/6488>
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Change json example to be original
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Closes: #3391
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Since a26be9f3b89be2ee90c6358250b9889b37f95cf8, the same parser is used
to parse the result of sourcehut’s `HEAD` endpoint (coming from [git
dumb protocol]) and the output of `git ls-remote`. However, they are very
slightly different (the former doesn’t specify the current reference
since it’s implied to be `HEAD`).
Unify both, and make the parser a bit more robust and understandable (by
making it more typed and adding tests for it)
[git dumb protocol]: https://git-scm.com/book/en/v2/Git-Internals-Transfer-Protocols#_the_dumb_protocol
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Move json stuff out of util.cc
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Use one of `get` or `getOr` instead which will either return a null-pointer (with a nicer error message) or a default value when the key is missing.
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Allow selecting derivation outputs
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E.g. 'nixpkgs#glibc^dev,static' or 'nixpkgs#glibc^*'.
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nix: Respect meta.outputsToInstall, and use all outputs by default
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tests: Distinguish crashes from expected failures
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This reverts commit 143b73f52dabb35cd56551c24caef95466bce488.
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libfetchers/git: fix every occasion of a permission error
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Resolve reference for remote git repositories (makes fetchGit work with non-'master' branch)
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https://hydra.nixos.org/log/lns780srkka4dv7r69mn4zfy6fdij4yr-nix-2.9.0pre20220428_4bb111c.drv
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I'm afraid I missed a few problematic `git(1)`-calls while implementing
PR #6440, sorry for that! Upon investigating what went wrong, I realized
that I only tested against the "cached"-case by accident because my
git-checkout with my system's flake was apparently cached during my
debugging.
I managed to trigger the original issue again by running:
$ git commit --allow-empty -m "tmp"
$ sudo nixos-rebuild switch --flake .# -L --builders ''
Since `repoDir` points to the checkout that's potentially owned by
another user, I decided to add `--git-dir` to each call affecting
`repoDir`.
Since the `tmpDir` for the temporary submodule-checkout is created by
Nix itself, it doesn't seem to be an issue.
Sorry for that, it should be fine now.
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These utility functions can be shared between the git and github fetchers.
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Update the documentation about how `ref` is resolved if it is not
specified.
Add a note about special handling of local workdirs with `git+file`.
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The previous head caching implementation stored two paths in the local
cache; one for the cached git repo and another textfile containing the
resolved HEAD ref. This commit instead stores the resolved HEAD by
setting the HEAD ref in the local cache appropriately.
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Extract the handling of a local dirty workdir to a helper function.
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Resolves the HEAD reference from the remote repository instead
of assuming "master".
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