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flake: move the pre-commit definition to its own file

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It's a good hundred LOC, and wasn't coupled to the actual flake logic at
all.

Change-Id: Iebb4667b3197dbd8cb2b019014e99fa651848832
This commit is contained in:
Qyriad 2024-05-06 22:50:32 -06:00
parent 964ac8b0e8
commit 4f98d21b71
2 changed files with 100 additions and 82 deletions
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83
flake.nix
View file

@ -286,89 +286,8 @@
system:
let
pkgs = nixpkgsFor.${system}.native;
# Import pre-commit bypassing the flake because flakes don't let
# you have overlays. Also their implementation forces an
# unnecessary reimport of nixpkgs for our use cases.
tools = import (pre-commit-hooks + "/nix/call-tools.nix") pkgs;
pre-commit-run = pkgs.callPackage (pre-commit-hooks + "/nix/run.nix") {
inherit tools;
isFlakes = true;
# unused!
gitignore-nix-src = builtins.throw "gitignore-nix-src is unused";
};
in
pre-commit-run {
src = self;
hooks = {
no-commit-to-branch = {
enable = true;
settings.branch = [ "main" ];
};
check-case-conflicts.enable = true;
check-executables-have-shebangs = {
enable = true;
stages = [ "commit" ];
};
check-shebang-scripts-are-executable = {
enable = true;
stages = [ "commit" ];
};
check-symlinks = {
enable = true;
excludes = [ "^tests/functional/lang/symlink-resolution/broken$" ];
};
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/rl-next(-dev)?";
pass_filenames = false;
entry = ''
${lib.getExe pkgs.build-release-notes} doc/manual/rl-next doc/manual/rl-next-dev
'';
};
check-headers = {
enable = true;
package = pkgs.check-headers;
files = "^src/";
types = [
"c++"
"file"
"header"
];
# generated files; these will never actually be seen by this
# check, and are left here as documentation
excludes = [
"(parser|lexer)-tab\\.hh$"
"\\.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 ];
};
};
}
import ./misc/pre-commit.nix { inherit self pkgs pre-commit-hooks; }
);
};

99
misc/pre-commit.nix Normal file
View file

@ -0,0 +1,99 @@
{
/**
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/rl-next(-dev)?";
pass_filenames = false;
entry = ''
${lib.getExe pkgs.build-release-notes} doc/manual/rl-next doc/manual/rl-next-dev
'';
};
check-headers = {
enable = true;
package = pkgs.check-headers;
files = "^src/";
types = [
"c++"
"file"
"header"
];
# generated files; these will never actually be seen by this
# check, and are left here as documentation
excludes = [
"(parser|lexer)-tab\\.hh$"
"\\.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 ];
};
};
}