After final improvements to the official formatter implementation,
this commit now performs the first treewide reformat of Nix files using it.
This is part of the implementation of RFC 166.
Only "inactive" files are reformatted, meaning only files that
aren't being touched by any PR with activity in the past 2 months.
This is to avoid conflicts for PRs that might soon be merged.
Later we can do a full treewide reformat to get the rest,
which should not cause as many conflicts.
A CI check has already been running for some time to ensure that new and
already-formatted files are formatted, so the files being reformatted here
should also stay formatted.
This commit was automatically created and can be verified using
nix-build a08b3a4d19.tar.gz \
--argstr baseRev 57b193d8dd
result/bin/apply-formatting $NIXPKGS_PATH
'command -v builtin' returns 'builtin', which doesn't suit us since
we're looking for program in the given PATH. This could give us shebangs
like this:
#!builtin
which is surprising.
Switch to 'type -P command' which always returns a path, even if command
is both a builtin and an executable (for example 'test'), or fail is
'command' is just a builtin.
This fixes a bug where `patchShebangs` crashes when trying to patch
files that contain only a shebang (e.g. `#!/bin/bash`) (and nothing
else) and do not end with a newline.
Such file can be produced using `printf "#!/bin/bash" > example` or
`echo -n "#!/bin/bash" > example`.
I don't understand why one would want to create such files, as they do
literally nothing, but the chromium tarball we are using started
shipping some 🫠
Full reproducer:
```nix
with import <nixpkgs> { };
stdenv.mkDerivation {
dontUnpack = true;
name = "patch-shebangs-no-trailing-newline-reproducer";
postPatch = ''
printf "#!/bin/bash" > reproducer
chmod +x reproducer
patchShebangs reproducer
'';
}
```
```
❯ nix-build reproducer.nix
this derivation will be built:
/nix/store/vmbshdkdk4a0bayw3wi21wvxyhzpcsy2-patch-shebangs-no-trailing-newline-reproducer.drv
building '/nix/store/vmbshdkdk4a0bayw3wi21wvxyhzpcsy2-patch-shebangs-no-trailing-newline-reproducer.drv'...
patching sources
patching script interpreter paths in reproducer
/nix/store/vr6wwdxkmyy44sg0gwxi10b8fc5zhwz0-stdenv-linux/setup: line 144: pop_var_context: head of shell_variables not a function context
error: builder for '/nix/store/vmbshdkdk4a0bayw3wi21wvxyhzpcsy2-patch-shebangs-no-trailing-newline-reproducer.drv' failed with exit code 1;
last 3 log lines:
> patching sources
> patching script interpreter paths in reproducer
> /nix/store/vr6wwdxkmyy44sg0gwxi10b8fc5zhwz0-stdenv-linux/setup: line 144: pop_var_context: head of shell_variables not a function context
For full logs, run 'nix log /nix/store/vmbshdkdk4a0bayw3wi21wvxyhzpcsy2-patch-shebangs-no-trailing-newline-reproducer.drv'.
```
This change adds a flag to update shebang paths that point to the Nix
store. This is particularly useful when a cross-compiled package uses
same script at compile-time and run-time, but the interpreter must be
changed since hostPlatform != buildPlatform.
