home: Add GTK theming, cursor fixes, etc

home/common/default.nix

@@ -4,5 +4,6 @@
     ./wm
     ./nodm.nix
     ./nix.nix
+    ./theme.nix
   ];
 }

home/common/theme.nix

@@ -0,0 +1,87 @@
+{ config, lib, pkgs, ... }:
+let
+  cfg = config.nixfiles.theming;
+
+  toCaps = s: with lib.strings; with builtins;
+    (toUpper (substring 0 1 s)) + toLower (substring 1 ((stringLength s)-1) s);
+  inherit (lib.strings) toUpper toLower;
+
+  mkCtp = flavor: accent: with pkgs; {
+    names = {
+      cursors = "Catppuccin-${toCaps flavor}-${toCaps accent}-Cursors";
+      icons = "Papirus-Dark";
+      gtk = let
+        base = "Catppuccin-${toCaps flavor}-Standard-${toCaps accent}-Dark";
+      in {
+        normal = "${base}";
+        hdpi = "${base}-hdpi";
+        xhdpi = "${base}-xhdpi";
+      };
+    };
+    packages = {
+      cursors = catppuccin-cursors."${toLower flavor}${toCaps accent}";
+      kvantum = catppuccin-kvantum.override { variant = toCaps flavor; accent = toCaps accent; };
+      icons = catppuccin-papirus-folders.override { flavor = toLower flavor; accent = toLower accent; };
+      gtk = catppuccin-gtk.override { variant = toLower flavor; accents = [ (toLower accent) ]; };
+    };
+  };
+
+  ctp = with cfg.catppuccin; mkCtp flavor accent;
+in {
+  options.nixfiles.theming = { 
+    enable = lib.mkEnableOption "nixfiles theming options";
+
+    catppuccin = {
+      themeDPI = lib.mkOption {
+        description = "Catppuccin theme DPI preset";
+        type = with lib.types; oneOf (mapAttrsToList (k: v: k) ctp.names.gtk);
+        default = "normal";
+      };
+      flavor = lib.mkOption {
+        description = "Catppuccin flavor";
+        type = lib.types.str;
+        default = "mocha";
+      };
+      accent = lib.mkOption {
+        description = "Catppuccin accent";
+        type = lib.types.str;
+        default = "mauve";
+      };
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    fonts.fontconfig.enable = lib.mkDefault true;
+
+    home.packages = with pkgs; [
+      ubuntu_font_family
+    ] ++ lib.mapAttrsToList (k: v: v) ctp.packages;
+
+    gtk = {
+      enable = true;
+      font = lib.mkDefault {
+        name = "Ubuntu";
+        package = pkgs.ubuntu_font_family;
+        size = 12;
+      };
+
+      theme = lib.mkDefault {
+        package = ctp.packages.gtk;
+        name = ctp.names.gtk.normal;
+      };
+
+      iconTheme = lib.mkDefault {
+        name = ctp.names.icons;
+        package = ctp.packages.icons;
+      };
+    };
+
+    home.pointerCursor = {
+      package = lib.mkDefault ctp.packages.cursors;
+      name = lib.mkDefault ctp.names.cursors;
+      size = lib.mkDefault 24;
+      x11.enable = lib.mkDefault true;
+      gtk.enable = lib.mkDefault true;
+    };
+  };
+}

home/common/wm/default.nix

@@ -22,6 +22,8 @@ in
     # Common options for standalone window managers; many of these (or
     # alternatives thereof) are pulled in by desktop environments.
 
+    nixfiles.theming.enable = lib.mkDefault true;
+
     qt.enable = true;
     qt.platformTheme.name = "qtct";
     qt.style.name = "kvantum";

home/profile/base.nix

@@ -84,8 +84,9 @@ in
     };
 
     # this fixes a lot of theme weirdness
-    home.file.".icons".source = config.lib.file.mkOutOfStoreSymlink "${config.xdg.dataHome}/icons";
-    home.file.".themes".source = config.lib.file.mkOutOfStoreSymlink "${config.xdg.dataHome}/themes";
+    # this actually breaks home-manager's icon/theme management
+    # home.file.".icons".source = config.lib.file.mkOutOfStoreSymlink "${config.xdg.dataHome}/icons";
+    # home.file.".themes".source = config.lib.file.mkOutOfStoreSymlink "${config.xdg.dataHome}/themes";
 
     # some packages defined here may be redundant with packages on a non-NixOS
     # home-manager setup, but it's better to have a consistent environment at

home/sessions/hyprland/default.nix

@@ -150,7 +150,7 @@ in
         # source = ~/.config/hypr/myColors.conf
 
         # Some default env vars.
-        env = mkd "XCURSOR_SIZE,24";
+        # env = mkd "XCURSOR_SIZE,24";
 
 
         # For all categories, see https://wiki.hyprland.org/Configuring/Variables/

hosts/slab/home.nix

@@ -16,6 +16,9 @@
     };
     home.stateVersion = "23.11";
 
+    home.pointerCursor = lib.mkIf config.nixfiles.theming.enable { size = 32; };
+    nixfiles.theming.catppuccin.themeDPI = "hdpi";
+
     wayland.windowManager.hyprland.settings = {
       monitor = ",preferred,auto,1.25";
     };