Merge pull request #1331 from isabelroses/tools

feat: system tools can be configured individually

modules/nix/nix-darwin.nix

@@ -9,39 +9,44 @@ let
 
   darwin-uninstaller = pkgs.callPackage ../../pkgs/darwin-uninstaller { };
 
-  inherit (nix-tools) darwin-option darwin-rebuild darwin-version;
+  mkToolModule = { name, package ? nix-tools.${name} }: { config, ... }: {
+    options.system.tools.${name}.enable = lib.mkEnableOption "${name} script" // {
+      default = config.system.tools.enable;
+    };
+
+    config = lib.mkIf config.system.tools.${name}.enable {
+      environment.systemPackages = [ package ];
+    };
+  };
 in
 
 {
   options.system = {
-    disableInstallerTools = lib.mkOption {
+    tools.enable = lib.mkOption {
-      type = lib.types.bool;
-      internal = true;
-      default = false;
-      description = ''
-        Disable darwin-rebuild and darwin-option. This is useful to shrink
-        systems which are not expected to rebuild or reconfigure themselves.
-        Use at your own risk!
-    '';
-    };
-
-    includeUninstaller = lib.mkOption {
       type = lib.types.bool;
       internal = true;
       default = true;
+      description = ''
+        Disable internal tools, such as darwin-rebuild and darwin-option. This
+        is useful to shrink systems which are not expected to rebuild or
+        reconfigure themselves. Use at your own risk!
+    '';
     };
   };
 
+  imports = [
+    (lib.mkRenamedOptionModule [ "system" "includeUninstaller" ] [ "system" "tools" "darwin-uninstaller" "enable" ])
+    (lib.mkRemovedOptionModule [ "system" "disableInstallerTools" ] "Please use system.tools.enable instead")
+
+    (mkToolModule { name = "darwin-option"; })
+    (mkToolModule { name = "darwin-rebuild"; })
+    (mkToolModule { name = "darwin-version"; })
+    (mkToolModule { name = "darwin-uninstaller"; package = darwin-uninstaller; })
+  ];
+
   config = {
-    environment.systemPackages =
-      [ darwin-version ]
-      ++ lib.optionals (!config.system.disableInstallerTools) [
-        darwin-option
-        darwin-rebuild
-      ] ++ lib.optional config.system.includeUninstaller darwin-uninstaller;
-
     system.build = {
-      inherit darwin-option darwin-rebuild darwin-version;
+      inherit (nix-tools) darwin-option darwin-rebuild darwin-version;
     };
   };
 }

pkgs/darwin-uninstaller/default.nix

@@ -8,7 +8,7 @@ let
       {
         nixpkgs.source = path;
         nixpkgs.hostPlatform = stdenv.hostPlatform.system;
-        system.includeUninstaller = false;
+        system.tools.darwin-uninstaller.enable = false;
       }
     ];
   };