kde ark: add unrar to decompress .rar archives

modules/ark.nix

@@ -0,0 +1,43 @@
+# Archive manager: Compress and decompress
+
+# https://github.com/NixOS/nixpkgs/issues/311240
+# The package definition for `kdePackages.ark` does not specify the extra tools that can be used by Ark. The older definition `libsForQt5.ark` contains extra tools such as unar to handle extra types of archives.
+#
+# Solution: To extract `.rar` files, we manually override some of the attributes based on how it is done in the old file of `libsForQt5.ark`.
+
+{ config, pkgs, mkKdeDerivation, lib, ... }:
+let
+  extraTools = with pkgs; [
+    p7zip
+    lrzip
+    unar
+    unrar
+  ];
+
+  # https://ryantm.github.io/nixpkgs/using/overrides/#sec-pkg-overrideAttrs
+  ark-with-unrar = pkgs.kdePackages.ark.overrideAttrs {
+    buildInputs = with pkgs; [
+      libarchive
+      libzip
+    ] ++ extraTools;
+
+    qtWrapperArgs = [
+      "--prefix"
+      "PATH"
+      ":"
+      (lib.makeBinPath extraTools)
+    ];
+  };
+in
+{
+  allowUnfree = [
+   # Required for ark
+   "unrar"
+  ];
+
+  users.users.yoda = {
+    packages = with pkgs; [
+      ark-with-unrar # Archive manager: Compress and decompress
+    ];
+  };
+}

modules/kde.nix

@@ -40,6 +40,7 @@
   #
   environment.plasma6.excludePackages = with pkgs.kdePackages; [
     krdp # Remote Desktop Protocol (RDP)
+    ark # Archive manager: Compress and decompress
   ];
 
   # GNOME desktop integration.

modules/programs-kde.nix

@@ -1,7 +1,7 @@
-{ config, pkgs, ... }:
+{ config, pkgs, mkKdeDerivation, lib, ... }:
 {
   imports = [
-    ./file-roller.nix
+    ./ark.nix # Archive manager: Compress and decompress
   ];
 
   nixpkgs.config.permittedInsecurePackages = [