nix: fix package and add devshell

.gitignore

@@ -34,5 +34,10 @@
 .vscode/
 .cache/
 build/
+/result
+
+# direnv
+/.direnv
+/.envrc
 
 compile_commands.json

nix/default.nix

@@ -1,28 +1,22 @@
 {
   lib,
+  nix-gitignore,
   stdenv,
+
   cmake,
-  kdePackages,
-  pciutils,
   qt6,
-  pkg-config,
   hyprutils,
+  pciutils,
+  kdePackages,
   version ? "0",
 }: let
-  inherit (lib.sources) cleanSource cleanSourceWith;
-  inherit (lib.strings) hasSuffix makeBinPath;
+  inherit (lib.strings) makeBinPath;
 in
   stdenv.mkDerivation {
     pname = "hyprsysteminfo";
     inherit version;
 
-    src = cleanSourceWith {
-      filter = name: _type: let
-        baseName = baseNameOf (toString name);
-      in
-        ! (hasSuffix ".nix" baseName);
-      src = cleanSource ../.;
-    };
+    src = nix-gitignore.gitignoreSource [] ./..;
 
     nativeBuildInputs = [
       cmake
@@ -31,11 +25,13 @@ in
     ];
 
     buildInputs = [
-      kdePackages.kirigami-addons
       qt6.qtbase
+      qt6.qtdeclarative
       qt6.qtsvg
       qt6.qtwayland
       hyprutils
+      kdePackages.qqc2-desktop-style
+      kdePackages.kirigami
     ];
 
     preFixup = ''

nix/shell.nix

@@ -0,0 +1,28 @@
+{
+  pkgs ? import <nixpkgs> {},
+  hyprsysteminfo ? pkgs.callPackage ./default.nix {},
+  ...
+}: pkgs.mkShell {
+  inputsFrom = [ hyprsysteminfo ];
+  nativeBuildInputs = [ pkgs.clang-tools pkgs.pciutils ];
+
+  shellHook = let
+    inherit (pkgs.lib.strings) concatMapStringsSep;
+    qtLibPath = f: concatMapStringsSep ":" f (with pkgs.qt6; [
+      qtbase
+      qtdeclarative
+      qtwayland
+      pkgs.kdePackages.qqc2-desktop-style
+      # see https://github.com/NixOS/nixpkgs/blob/e186dd1a34be7a76c6e2c038ab4b759faec32d5d/pkgs/kde/frameworks/kirigami/default.nix#L9-L11
+      pkgs.kdePackages.kirigami.unwrapped
+    ]);
+  in ''
+    # Add Qt-related environment variables.
+    export QT_PLUGIN_PATH=${qtLibPath (p: "${p}/lib/qt-6/plugins")}
+    export QML2_IMPORT_PATH=${qtLibPath (p: "${p}/lib/qt-6/qml")}
+
+    # Generate compile_commands.json
+    CMAKE_EXPORT_COMPILE_COMMANDS=1 cmake -S . -B ./build
+    ln -s build/compile_commands.json .
+  '';
+}