From fde4f481d992cd1b064844b70905814880aa6627 Mon Sep 17 00:00:00 2001
From: Samuel Dionne-Riel <samuel@dionne-riel.com>
Date: Wed, 14 Jul 2021 18:16:42 -0400
Subject: [PATCH] nixos/plasma5: Make kwinrc/kdeglobals internally configurable

This is used with the Plasma Mobile configuration to configure the
system as upstream recommends.
---
 .../services/x11/desktop-managers/plasma5.nix | 41 +++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/nixos/modules/services/x11/desktop-managers/plasma5.nix b/nixos/modules/services/x11/desktop-managers/plasma5.nix
index 8a1793484e23..9191a54e2b1b 100644
--- a/nixos/modules/services/x11/desktop-managers/plasma5.nix
+++ b/nixos/modules/services/x11/desktop-managers/plasma5.nix
@@ -4,6 +4,28 @@ let
   xcfg = config.services.xserver;
   cfg = xcfg.desktopManager.plasma5;
 
+  # Use only for **internal** options.
+  # This is not exactly user-friendly.
+  kdeConfigurationType = with types;
+    let
+      valueTypes = (oneOf [
+        bool
+        float
+        int
+        str
+      ]) // {
+        description = "KDE Configuration value";
+        emptyValue.value = "";
+      };
+      set = (nullOr (lazyAttrsOf valueTypes)) // {
+        description = "KDE Configuration set";
+        emptyValue.value = {};
+      };
+    in (lazyAttrsOf set) // {
+        description = "KDE Configuration file";
+        emptyValue.value = {};
+      };
+
   libsForQt5 = pkgs.plasma5Packages;
   inherit (libsForQt5) kdeGear kdeFrameworks plasma5;
   inherit (pkgs) writeText;
@@ -169,6 +191,20 @@ in
       type = types.bool;
       default = false;
     };
+
+    # Internally allows configuring kdeglobals globally
+    kdeglobals = mkOption {
+      internal = true;
+      default = {};
+      type = kdeConfigurationType;
+    };
+
+    # Internally allows configuring kwin globally
+    kwinrc = mkOption {
+      internal = true;
+      default = {};
+      type = kdeConfigurationType;
+    };
   };
 
   imports = [
@@ -418,6 +454,11 @@ in
       services.xserver.displayManager.setupCommands = startplasma;
 
       nixpkgs.config.firefox.enablePlasmaBrowserIntegration = true;
+
+      environment.etc = {
+        "xdg/kwinrc".text     = lib.generators.toINI {} cfg.kwinrc;
+        "xdg/kdeglobals".text = lib.generators.toINI {} cfg.kdeglobals;
+      };
     })
   ];
 }