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forked from extern/flakelight
flakelight/builtinModules/formatter.nix
2023-08-28 19:57:26 -07:00

42 lines
1.2 KiB
Nix

# flakelight -- Framework for simplifying flake setup
# Copyright (C) 2023 Archit Gupta <archit@accelbread.com>
# SPDX-License-Identifier: MIT
{ config, src, lib, flakelight, ... }:
let
inherit (lib) mkOption mkIf mapAttrsToList;
inherit (lib.types) lazyAttrsOf nullOr str;
inherit (flakelight.types) optFunctionTo;
in
{
options.formatters = mkOption {
type = nullOr (optFunctionTo (lazyAttrsOf str));
default = null;
};
config = mkIf (config.formatters != null) {
perSystem = { pkgs, lib, fd, coreutils, ... }: {
formatter = pkgs.writeShellScriptBin "formatter" ''
PATH=${lib.makeBinPath (config.devShell.packages pkgs)}
for f in "$@"; do
if [ -d "$f" ]; then
${fd}/bin/fd "$f" -Htf -x "$0" &
else
case "$(${coreutils}/bin/basename "$f")" in
${toString (mapAttrsToList
(n: v: "${n}) ${v} \"$f\" & ;;") (config.formatters pkgs))}
esac
fi
done &>/dev/null
wait
'';
};
checks.formatting = { lib, outputs', diffutils, ... }: ''
${lib.getExe outputs'.formatter} .
${diffutils}/bin/diff -qr ${src} . |\
sed 's/Files .* and \(.*\) differ/File \1 not formatted/g'
'';
};
}