nix: add debug package

Also use clangStdenv to build Use RelWithDebInfo for release builds

flake.nix

@@ -31,6 +31,7 @@
     packages = forAllSystems (pkgs: rec {
       caelestia-shell = pkgs.callPackage ./nix {
         rev = self.rev or self.dirtyRev;
+        stdenv = pkgs.clangStdenv;
         quickshell = inputs.quickshell.packages.${pkgs.system}.default.override {
           withX11 = false;
           withI3 = false;
@@ -39,6 +40,7 @@
         caelestia-cli = inputs.caelestia-cli.packages.${pkgs.system}.default;
       };
       with-cli = caelestia-shell.override {withCli = true;};
+      debug = caelestia-shell.override {debug = true;};
       default = caelestia-shell;
     });
 

nix/default.nix

@@ -33,6 +33,7 @@
   ninja,
   pkg-config,
   caelestia-cli,
+  debug ? false,
   withCli ? false,
   extraRuntimeDeps ? [],
 }: let
@@ -72,7 +73,7 @@
   ];
 
   assets = stdenv.mkDerivation {
-    name = "caelestia-assets";
+    name = "caelestia-assets${lib.optionalString debug "-debug"}";
     src = lib.fileset.toSource {
       root = ./..;
       fileset = lib.fileset.union ./../CMakeLists.txt ./../assets/cpp;
@@ -90,7 +91,7 @@
   };
 
   plugin = stdenv.mkDerivation {
-    name = "caelestia-qml-plugin";
+    name = "caelestia-qml-plugin${lib.optionalString debug "-debug"}";
     src = lib.fileset.toSource {
       root = ./..;
       fileset = lib.fileset.union ./../CMakeLists.txt ./../plugin;
@@ -110,14 +111,17 @@
 in
   stdenv.mkDerivation {
     inherit version;
-    pname = "caelestia-shell";
+    pname = "caelestia-shell${lib.optionalString debug "-debug"}";
     src = ./..;
 
     nativeBuildInputs = [cmake ninja makeWrapper qt6.wrapQtAppsHook];
     buildInputs = [quickshell assets plugin xkeyboard-config qt6.qtbase];
     propagatedBuildInputs = runtimeDeps;
 
-    cmakeBuildType = "Release";
+    cmakeBuildType =
+      if debug
+      then "Debug"
+      else "RelWithDebInfo";
     cmakeFlags =
       [
         (lib.cmakeFeature "ENABLE_MODULES" "shell")
@@ -125,6 +129,8 @@ in
       ]
       ++ cmakeVersionFlags;
 
+    dontStrip = debug;
+
     prePatch = ''
       substituteInPlace assets/pam.d/fprint \
         --replace-fail pam_fprintd.so /run/current-system/sw/lib/security/pam_fprintd.so