refactor: format nix code with alejandra and optimize src path

flake.nix

@@ -13,8 +13,7 @@
     };
   };
 
-  outputs =
-    {
+  outputs = {
     self,
     flake-parts,
     treefmt-nix,
@@ -30,14 +29,13 @@
         nixosModules.maomaowm = import ./nix/nixos-modules.nix self;
       };
 
-      perSystem =
-        {
+      perSystem = {
         config,
         pkgs,
         ...
-        }:
-        let
-          inherit (pkgs)
+      }: let
+        inherit
+          (pkgs)
           callPackage
           ;
         maomaowm = callPackage ./nix {
@@ -49,8 +47,7 @@
           buildInputs = old.buildInputs ++ [];
         };
         treefmtEval = treefmt-nix.lib.evalModule pkgs ./treefmt.nix;
-        in
-        {
+      in {
         packages.default = maomaowm;
         overlayAttrs = {
           inherit (config.packages) maomaowm;

nix/default.nix

@@ -18,15 +18,17 @@
   ninja,
   wlroots,
   mmsg,
-}:
-let
+}: let
   pname = "maomaowm";
 in
   stdenv.mkDerivation {
     inherit pname;
     version = "nightly";
 
-  src = ../.;
+    src = builtins.path {
+      path = ../.;
+      name = "source";
+    };
 
     nativeBuildInputs = [
       meson
@@ -62,7 +64,7 @@ stdenv.mkDerivation {
       description = "A streamlined but feature-rich Wayland compositor";
       homepage = "https://github.com/DreamMaoMao/maomaowm";
       license = lib.licenses.mit;
-    maintainers = with lib.maintainers; [ ];
+      maintainers = [];
       platforms = lib.platforms.unix;
     };
   }

nix/hm-modules.nix

@@ -1,11 +1,9 @@
-self:
-{
+self: {
   lib,
   config,
   pkgs,
   ...
-}:
-let
+}: let
   inherit (self.packages.${pkgs.system}) maomaowm;
   cfg = config.wayland.windowManager.maomaowm;
   variables = lib.concatStringsSep " " cfg.systemd.variables;
@@ -15,8 +13,7 @@ let
     ${lib.optionalString cfg.systemd.enable systemdActivation}
     ${cfg.autostart_sh}
   '';
-in
-{
+in {
   options = {
     wayland.windowManager.maomaowm = with lib; {
       enable = mkOption {
@@ -121,9 +118,11 @@ in
         Description = "maomao compositor session";
         Documentation = ["man:systemd.special(7)"];
         BindsTo = ["graphical-session.target"];
-        Wants = [
+        Wants =
+          [
             "graphical-session-pre.target"
-        ] ++ lib.optional cfg.systemd.xdgAutostart "xdg-desktop-autostart.target";
+          ]
+          ++ lib.optional cfg.systemd.xdgAutostart "xdg-desktop-autostart.target";
         After = ["graphical-session-pre.target"];
         Before = lib.optional cfg.systemd.xdgAutostart "xdg-desktop-autostart.target";
       };

nix/nixos-modules.nix

@@ -1,14 +1,11 @@
-self:
-{
+self: {
   config,
   lib,
   pkgs,
   ...
-}:
-let
+}: let
   cfg = config.programs.maomaowm;
-in
-{
+in {
   options = {
     programs.maomaowm = {
       enable = lib.mkEnableOption "maomaowm, a wayland compositor based on dwl";
@@ -21,9 +18,15 @@ in
   };
 
   config = lib.mkIf cfg.enable {
-    environment.systemPackages = [
+    environment.systemPackages =
+      [
         cfg.package
-    ] ++ (if (builtins.hasAttr "mmsg" cfg.package) then [ cfg.package.mmsg ] else [ ]);
+      ]
+      ++ (
+        if (builtins.hasAttr "mmsg" cfg.package)
+        then [cfg.package.mmsg]
+        else []
+      );
 
     xdg.portal = {
       enable = lib.mkDefault true;
@@ -42,6 +45,5 @@ in
 
       graphical-desktop.enable = lib.mkDefault true;
     };
-
   };
 }