feat: add theme

shamelessly stolen from github:jnsgruk/nixos-config

Signed-off-by: Lander Van den Bulcke <landervandenbulcke@gmail.com>

lib/theme/default.nix

@@ -0,0 +1,69 @@
+{
+  pkgs,
+  ...
+}:
+let
+  inherit ((import ./colours.nix)) colours;
+  libx = import ./lib.nix { inherit (pkgs) lib; };
+in
+rec {
+  inherit (libx) hexToRgb;
+  inherit colours;
+
+  catppuccin = {
+    flavor = "macchiato";
+    accent = "blue";
+    size = "standard";
+  };
+
+  wallpaper = ./wallpapers/norway.png;
+
+  gtkTheme = {
+    name = "catppuccin-macchiato-blue-standard";
+    package = pkgs.catppuccin-gtk.override {
+      size = catppuccin.size;
+      variant = catppuccin.flavor;
+      accents = [ catppuccin.accent ];
+    };
+  };
+
+  qtTheme = {
+    name = "Catppuccin-Macchiato-Blue";
+    package = pkgs.catppuccin-kvantum.override {
+      variant = "Macchiato";
+      accent = "Blue";
+    };
+  };
+
+  iconTheme = rec {
+    name = "Papirus-Dark";
+    package = pkgs.papirus-icon-theme;
+    iconPath = "${package}/share/icons/${name}";
+  };
+
+  cursorTheme = {
+    name = "Adwaita";
+    package = pkgs.adwaita-icon-theme;
+    size = 24;
+  };
+
+  fonts = {
+    default = {
+      name = "Inter";
+      package = pkgs.inter;
+      size = "11";
+    };
+    iconFont = {
+      name = "Inter";
+      package = pkgs.inter;
+    };
+    monospace = {
+      name = "MesloLGSDZ Nerd Font Mono";
+      package = pkgs.nerdfonts.override { fonts = [ "Meslo" ]; };
+    };
+    emoji = {
+      name = "Joypixels";
+      package = pkgs.joypixels;
+    };
+  };
+}