style: setup qt and gtk styles, options and defaults

modules/options/style/qt.nix

@@ -0,0 +1,59 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+with lib; let
+  theme = {
+    package = pkgs.gruvbox-gtk-theme;
+    name = "Gruvbox-Dark-BL";
+  };
+  cfg = config.modules.theming.qt;
+  inherit (config.modules.other.system) username;
+in {
+  options.modules.theming.qt = {
+    enable = mkEnableOption "qt theming";
+    name = mkOption {
+      description = "qt theme name";
+      type = types.str;
+    };
+    variant = mkOption {
+      description = "qt theme variant";
+      type = types.str;
+    };
+    accentColor = mkOption {
+      description = "accent colour for qt theme";
+      type = types.str;
+    };
+    package = mkOption {
+      description = "qt theme package";
+      type = types.package;
+    };
+  };
+
+  config = mkIf cfg.enable {
+    environment.sessionVariables = {QT_QPA_PLATFORMTHEME = "qt5ct";};
+    environment.variables = {
+      QT_STYLE_OVERRIDE = lib.mkForce "kvantum";
+      GTK_THEME = theme.name;
+    };
+
+    home-manager.users.${username} = {
+      qt = {
+        enable = true;
+        # style = {
+        #     inherit (cfg) name package;
+        # };
+      };
+      home = {
+        packages = with pkgs; [
+          qt5.qttools
+          libsForQt5.qt5ct
+          libsForQt5.qtstyleplugin-kvantum
+          breeze-icons
+        ];
+      };
+    };
+  };
+}

modules/style/fonts.nix

@@ -20,4 +20,13 @@ in {
       corefonts
     ]
     ++ optional (extraFonts != null) extraFonts;
+  # this fixes emoji stuff
+  fontconfig = {
+    defaultFonts = {
+      monospace = ["ComicShannsMono Nerd Font" "Noto Color Emoji"];
+      sansSerif = ["ComicShannsMono Nerd Font" "Noto Color Emoji"];
+      serif = ["ComicShannsMono Nerd Font" "Noto Color Emoji"];
+      emoji = ["Noto Color Emoji"];
+    };
+  };
 }

modules/style/qt.nix

@@ -9,50 +9,54 @@ with lib; let
     package = pkgs.gruvbox-gtk-theme;
     name = "Gruvbox-Dark-BL";
   };
-  cfg = config.modules.theming.qt;
+  cfg = config.modules.style.qt;
   inherit (config.modules.other.system) username;
 in {
-  options.modules.theming.qt = {
-    enable = mkEnableOption "qt theming";
-    name = mkOption {
-      description = "qt theme name";
-      type = types.str;
-    };
-    variant = mkOption {
-      description = "qt theme variant";
-      type = types.str;
-    };
-    accentColour = mkOption {
-      description = "accent colour for qt theme";
-      type = types.str;
-    };
-    package = mkOption {
-      description = "qt theme package";
-      type = types.package;
-    };
-  };
-
   config = mkIf cfg.enable {
     environment.sessionVariables = {QT_QPA_PLATFORMTHEME = "qt5ct";};
+
     environment.variables = {
       QT_STYLE_OVERRIDE = lib.mkForce "kvantum";
       GTK_THEME = theme.name;
     };
 
     home-manager.users.${username} = {
+      # This is taken from jacekpoz, thanks a lot!
       qt = {
         enable = true;
-        # style = {
-        #     inherit (cfg) name package;
-        # };
+        style = {
+          inherit (cfg) name;
+          package = cfg.package.override {
+            flavour = [cfg.variant];
+            accents = [cfg.accentColor];
+          };
+        };
       };
       home = {
         packages = with pkgs; [
           qt5.qttools
-          libsForQt5.qt5ct
+          qt6Packages.qtstyleplugin-kvantum
           libsForQt5.qtstyleplugin-kvantum
+          libsForQt5.qt5ct
           breeze-icons
         ];
+
+        sessionVariables = {
+          # Scaling factor for QT applications
+          QT_AUTO_SCREEN_SCALE_FACTOR = "1";
+
+          # Use wayland as the default backend, fall back to xcb if not available
+          QT_QPA_PLATFORM = "wayland;xcb";
+
+          # Disable window decorations for qt applications
+          QT_WAYLAND_DISABLE_WINDOWDECORATION = "1";
+
+          # Remain compatible with QT5 whenever possible
+          DISABLE_QT_COMPAT = "0";
+
+          # Tell Calibre to use the dark theme, because the light one hurts my eyes.
+          CALIBRE_USE_DARK_PALETTE = "1";
+        };
       };
     };
   };

modules/style/stylix.nix

@@ -48,25 +48,7 @@ in {
         # package = pkgs.bibata-cursors;
         # name = "Bibata-Modern-Classic";
       };
-      fonts = {
-        sizes = {
-          inherit (fontsizes) terminal popups applications;
-        };
-        monospace = {
-          package =
-            pkgs.nerdfonts.override {fonts = ["JetBrainsMono" "ComicShannsMono"];};
-          # name = "JetBrainsMono";
-          name = "ComicShannsMono Nerd Font";
-        };
 
-        serif = config.stylix.fonts.monospace;
-        sansSerif = config.stylix.fonts.monospace;
-
-        emoji = {
-          package = pkgs.noto-fonts-color-emoji;
-          name = "Noto Color Emoji";
-        };
-      };
       opacity = {
         applications = 1.0;
         popups = 1.0;