clan-core/flake-parts/formatting.nix
DavHau cb307f761a
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formatting: add pre-commit hook to dev shell
2023-07-28 18:12:31 +02:00

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Nix

{ lib
, inputs
, ...
}: {
imports = [
inputs.pre-commit-hooks-nix.flakeModule
inputs.treefmt-nix.flakeModule
];
perSystem = { pkgs, config, ... }: {
treefmt.projectRootFile = "flake.nix";
treefmt.flakeCheck = true;
treefmt.flakeFormatter = true;
treefmt.programs.shellcheck.enable = true;
treefmt.settings.formatter.nix = {
command = "sh";
options = [
"-eucx"
''
# First deadnix
${lib.getExe pkgs.deadnix} --edit "$@"
# Then nixpkgs-fmt
${lib.getExe pkgs.nixpkgs-fmt} "$@"
''
"--" # this argument is ignored by bash
];
includes = [ "*.nix" ];
};
treefmt.settings.formatter.python = {
command = "sh";
options = [
"-eucx"
''
${lib.getExe pkgs.ruff} --fix "$@"
${lib.getExe pkgs.black} "$@"
''
"--" # this argument is ignored by bash
];
includes = [ "*.py" ];
};
# activated in devShells via inputsFrom = [config.pre-commit.devShell];
pre-commit.settings.hooks.format-all = {
name = "format-all";
enable = true;
pass_filenames = true;
entry = toString (pkgs.writeScript "treefmt" ''
#!${pkgs.bash}/bin/bash
${config.treefmt.build.wrapper}/bin/treefmt --clear-cache --fail-on-change "$@"
'');
};
};
}