{ self, nix-filter, pkgs, }: let inherit (builtins) removeAttrs; inherit (pkgs.lib) concatStringsSep; mkNodeCheck = { buildInputs ? [], checkCommands, ... } @ attrs: let extraAttrs = removeAttrs attrs ["buildInputs"]; in self.packages.${pkgs.system}.default.overrideAttrs (old: { src = nix-filter { root = self; include = [ ../package.json ../tsconfig.json ../.eslintrc.json ../.parcelrc ../.posthtmlrc ../.prettierrc nix-filter.isDirectory (nix-filter.matchExt "ts") (nix-filter.matchExt "tsx") (nix-filter.matchExt "html") (nix-filter.matchExt "scss") ]; }; buildInputs = old.buildInputs ++ buildInputs; checkPhase = '' mkdir -p $out ${concatStringsSep "\n" (map (command: "${command} > $out/check.log") checkCommands)} ''; doCheck = true; dontBuild = true; dontInstall = true; } // extraAttrs); in { style = mkNodeCheck { checkCommands = [ "npm run style" ]; }; types = mkNodeCheck { checkCommands = [ "npm run check" ]; }; }