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https://github.com/NixOS/nixpkgs.git
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a553ef2950
The nix-parse workflow can now be run locally the same way as in CI. To do this, the CI's workflow was slightly adjusted. Instead of testing only the changed files, we're now testing all files in the repository. This is possible in two ways: 1. By calling nix-instantiate once with all files as arguments. This will be rather fast, but only the first error is shown before it errors out. 2. By calling nix-instantiate once for each file. This will be much slower, but has the advantage that we see all errors at once. To avoid running the long variant every time, we first do a quick check with the fast version. If that fails, we run the slower one to report the errors. This gives us the best of both.
43 lines
896 B
Nix
43 lines
896 B
Nix
{
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lib,
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nix,
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runCommand,
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}:
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let
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nixpkgs =
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with lib.fileset;
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toSource {
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root = ../.;
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fileset = (fileFilter (file: file.hasExt "nix") ../.);
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};
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in
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runCommand "nix-parse-${nix.name}"
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{
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nativeBuildInputs = [
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nix
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];
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}
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''
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export NIX_STORE_DIR=$TMPDIR/store
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export NIX_STATE_DIR=$TMPDIR/state
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cd "${nixpkgs}"
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# Passes all files to nix-instantiate at once.
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# Much faster, but will only show first error.
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parse-all() {
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find . -type f -iname '*.nix' | xargs -P $(nproc) nix-instantiate --parse >/dev/null 2>/dev/null
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}
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# Passes each file separately to nix-instantiate with -n1.
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# Much slower, but will show all errors.
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parse-each() {
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find . -type f -iname '*.nix' | xargs -n1 -P $(nproc) nix-instantiate --parse >/dev/null
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}
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if ! parse-all; then
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parse-each
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fi
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touch $out
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''
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