lix/misc/pre-commit.nix

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{
/**
Path to Lix's source, normally the flake's "self" argument
*/
self ? pkgs.lib.cleanSource ./.,
/**
Already instantiated Nixpkgs
*/
pkgs,
/**
pre-commit-hooks source path, normally from the flake input
*/
pre-commit-hooks,
}:
let
inherit (pkgs) lib;
# Import pre-commit bypassing the flake because flakes don't let
# you have overlays. Also their implementation forces an
# unnecessary reimport of nixpkgs for our use cases.
tools = import (pre-commit-hooks + "/nix/call-tools.nix") pkgs;
pre-commit-run = pkgs.callPackage (pre-commit-hooks + "/nix/run.nix") {
inherit tools;
isFlakes = true;
# unused!
gitignore-nix-src = builtins.throw "gitignore-nix-src is unused";
};
in
pre-commit-run {
src = self;
hooks = {
no-commit-to-branch = {
enable = true;
settings.branch = [ "main" ];
};
check-case-conflicts.enable = true;
check-executables-have-shebangs = {
enable = true;
stages = [ "commit" ];
};
check-shebang-scripts-are-executable = {
enable = true;
stages = [ "commit" ];
};
check-symlinks = {
enable = true;
excludes = [ "^tests/functional/lang/symlink-resolution/broken$" ];
};
check-merge-conflicts.enable = true;
end-of-file-fixer = {
enable = true;
excludes = [
"\\.drv$"
"^tests/functional/lang/"
];
};
mixed-line-endings = {
enable = true;
excludes = [ "^tests/functional/lang/" ];
};
release-notes = {
enable = true;
package = pkgs.build-release-notes;
files = ''^doc/manual/(change-authors\.yml|rl-next(-dev)?)'';
pass_filenames = false;
entry = ''
${lib.getExe pkgs.build-release-notes} --change-authors doc/manual/change-authors.yml doc/manual/rl-next
'';
};
change-authors-sorted = {
enable = true;
package = pkgs.yq;
files = ''^doc/manual/change-authors\.yml'';
entry = "${pkgs.writeShellScript "change-authors-sorted" ''
set -euo pipefail
shopt -s inherit_errexit
echo "changes necessary to sort $1:"
diff -U3 <(${lib.getExe pkgs.yq} -y . "$1") <(${lib.getExe pkgs.yq} -Sy . "$1")
''}";
};
check-headers = {
enable = true;
package = pkgs.check-headers;
files = "^src/";
types = [
"c++"
"file"
"header"
];
excludes = [
''^src/pch/.*$''
# generated files; these will never actually be seen by this
# check, and are left here as documentation
''(parser|lexer)-tab\.hh$''
''\.gen\.hh$''
];
entry = lib.getExe pkgs.check-headers;
};
# TODO: Once the test suite is nicer, clean up and start
# enforcing trailing whitespace on tests that don't explicitly
# check for it.
trim-trailing-whitespace = {
enable = true;
stages = [ "commit" ];
excludes = [ "^tests/functional/lang/" ];
};
treefmt = {
enable = true;
settings.formatters = [ pkgs.nixfmt ];
};
};
}