add kde configuration~

nixos/configs/gui/default.nix

@@ -3,6 +3,7 @@
   niri,
   pkgs,
   lib,
+  deprekages,
   ...
 }:
 {
@@ -41,7 +42,6 @@
   # Don't let Plasma override TLP with PPD.
   services.power-profiles-daemon.enable = lib.mkForce false;
 
-
   # Enable espanso, when possible.
   services.espanso.enable = true;
 
@@ -125,6 +125,15 @@
         enable = true;
         settings.main.terminal = "wezterm";
       };
+
+      #When using plasma, set things up to be more like Niri.
+      home.file.".local/share/kwin/scripts/karousel".source = deprekages.kde-karousel;
+      home.file.".local/share/kwin/effects/animations".source = pkgs.fetchFromGitHub {
+        owner = "peterfajdiga";
+        repo = "kwin4_effect_geometry_change";
+        rev = "071609913450fc0b0ea5c39ad985e2fab39a5235";
+        hash = "sha256-H3cslx6ceAJGXSa0+gNzmUINRoLeYODhGt4pSFfgNbQ=";
+      };
     };
 
   # Use a graphical greeter.

packages.nix

@@ -102,6 +102,9 @@ flake-utils.lib.eachDefaultSystem (
       # vscode
       vscode-extensions = callPackage ./packages/vscode-extensions.nix { };
 
+      # plasma
+      kde-karousel = callPackage ./packages/kde-karousel.nix { };
+
       # xonsh and xontribs
       xonsh-with-xontribs = pkgs.xonsh.override {
         extraPackages = pythonPackages: [

packages/kde-karousel.nix

@@ -0,0 +1,49 @@
+{
+  lib,
+  stdenv,
+  fetchFromGitHub,
+  typescript,
+  nodejs,
+  bash,
+}:
+stdenv.mkDerivation rec {
+  pname = "karousel";
+  version = "0.10";
+
+  src = fetchFromGitHub {
+    owner = "peterfajdiga";
+    repo = "karousel";
+    rev = "v${version}";
+    hash = "sha256-lI3VaCd4eYhWbnYLEIeFiB88SWjd/DF8CUGFmxEXDXo=";
+  };
+
+  nativeBuildInputs = [
+    typescript
+    nodejs
+    bash
+  ];
+
+  dontConfigure = true;
+  dontBuild = true;
+
+  # Run the simple commands that generate the plugin.
+  installPhase = ''
+    mkdir -p $out/contents/code $out/contents/config
+
+    # Build the parts that need to be built...
+    tsc -p ./src/main --outFile $out/contents/code/main.js
+    bash ./run-ts.sh ./src/generators/config > $out/contents/config/main.xml
+
+    # ... and copy the rest.
+    cp -r $src/package/* $out/
+  '';
+
+  meta = {
+    description = "Scrollable tiling Kwin script";
+    homepage = "https://github.com/peterfajdiga/karousel/releases/download/v0.10/karousel_0_10.tar.gz";
+    license = lib.licenses.gpl3Only;
+    maintainers = with lib.maintainers; [ ];
+    mainProgram = "karousel";
+    platforms = lib.platforms.all;
+  };
+}