From d6c6840ef050be0cd747426e5d95e7d55d115fdd Mon Sep 17 00:00:00 2001
From: Minijackson <minijackson@riseup.net>
Date: Thu, 27 Feb 2025 21:55:43 +0100
Subject: usecases/gtk: add darkman, remove custom GTK theme

---
 common/default.nix                 |   7 +-
 usecases/desktop/graphical/gtk.nix | 167 +++++++++++--------------------------
 2 files changed, 54 insertions(+), 120 deletions(-)

diff --git a/common/default.nix b/common/default.nix
index 30bb3f2..87b9437 100644
--- a/common/default.nix
+++ b/common/default.nix
@@ -1,6 +1,6 @@
 inputs:
 
-{ config, ... }:
+{ config, lib, ... }:
 
 {
   imports = [
@@ -28,6 +28,11 @@ inputs:
     })
   ];
 
+  location = {
+    latitude = lib.mkDefault 48.856667;
+    longitude = lib.mkDefault 2.352222;
+  };
+
   services.nscd.enableNsncd = true;
 
   environment.sessionVariables.DO_NOT_TRACK = "1";
diff --git a/usecases/desktop/graphical/gtk.nix b/usecases/desktop/graphical/gtk.nix
index 13e0918..e68c322 100644
--- a/usecases/desktop/graphical/gtk.nix
+++ b/usecases/desktop/graphical/gtk.nix
@@ -1,131 +1,60 @@
-inputs: {
+_inputs:
+{
   config,
   lib,
   pkgs,
   ...
-}: let
-  gtk3Colors = ./gtk-colors.scss;
-
-  gtk3CssFile =
-    pkgs.stdenv.mkDerivation ({
-      name = "gtk3.css";
-
-      src = pkgs.gtk3.src;
-
-      nativeBuildInputs = with pkgs; [sassc];
-
-      patchPhase = ''
-        cp -f ${gtk3Colors} gtk/theme/Adwaita/_colors.scss
-        substituteAllInPlace gtk/theme/Adwaita/_colors.scss
-      '';
-
-      dontConfigure = true;
-      dontInstall = true;
-
-      buildPhase = ''
-        sassc -a -M -t expanded gtk/theme/Adwaita/gtk-contained-dark.scss $out
-        # These lines contains includes of assets
-        sed -i -e '/-gtk-icon/d' $out;
-      '';
-    }
-    // config.theme.colors);
-
-  gtk4NamedColors = with config.theme.colors; {
-    # From the main CSS
-    # -----------------
-
-    # TODO: 2 and 4
-
-    blue_1 = fadedBlue;
-    blue_3 = neutralBlue;
-    blue_5 = brightBlue;
-
-    green_1 = fadedGreen;
-    green_3 = neutralGreen;
-    green_5 = brightGreen;
-
-    yellow_1 = fadedYellow;
-    yellow_3 = neutralYellow;
-    yellow_5 = brightYellow;
-
-    orange_1 = fadedOrange;
-    orange_3 = neutralOrange;
-    orange_5 = brightOrange;
-
-    red_1 = fadedRed;
-    red_3 = neutralRed;
-    red_5 = brightRed;
-
-    purple_1 = fadedMagenta;
-    purple_3 = neutralMagenta;
-    purple_5 = brightMagenta;
-
-    # TODO: brown
-
-    # From the dark theme CSS
-    # -----------------------
-
-    # TODO: bright dominant
-    accent_color = "#8ec07c";
-    destructive_color = neutralOrange;
-    error_color = neutralOrange;
-
-    warning_bg_color = neutralYellow;
-
-    view_bg_color = background0;
-    view_fg_color = foreground;
-
-    window_bg_color = background1;
-    window_fg_color = foreground;
-
-    headerbar_bg_color = softBackground;
-    headerbar_fg_color = foreground;
-
-    dialog_bg_color = background2;
-    dialog_fg_color = foreground;
-
-    popover_bg_color = background2;
-    popover_fg_color = foreground;
-  };
-
-  gtk4Css = lib.concatStringsSep "\n" (lib.mapAttrsToList
-    (name: value: "@define-color ${name} ${value};")
-    gtk4NamedColors);
-
-  gtk4CssFile = pkgs.writeText "gtk4.css" gtk4Css;
-in {
-  home-manager.users.minijackson = {config, ...}: {
-    gtk = {
-      enable = true;
-      gtk2.configLocation = "${config.xdg.configHome}/gtk-2.0/gtkrc";
-
-      iconTheme = {
-        # TODO: properly modify the colors
-        # High priority, because gnome-themes-extra below also pulls the
-        # Adwaita icon theme, which leads to a conflict
-        package = lib.hiPrio (pkgs.tela-circle-icon-theme.override {
-          colorVariants = ["brown"];
-        });
-        name = "Tela-circle-brown-dark";
+}:
+let
+  inherit (config) location;
+in
+{
+  home-manager.users.minijackson =
+    { config, ... }:
+    {
+      gtk = {
+        enable = true;
+        gtk2.configLocation = "${config.xdg.configHome}/gtk-2.0/gtkrc";
+
+        iconTheme = {
+          # TODO: properly modify the colors
+          # High priority, because gnome-themes-extra below also pulls the
+          # Adwaita icon theme, which leads to a conflict
+          package = lib.hiPrio (
+            pkgs.tela-circle-icon-theme.override {
+              colorVariants = [ "brown" ];
+            }
+          );
+          name = "Tela-circle-brown-dark";
+        };
+
+        gtk3.extraConfig.gtk-application-prefer-dark-theme = true;
       };
 
-      theme = {
-        package = pkgs.gnome-themes-extra;
-        name = "Adwaita-dark";
+      dconf.settings = {
+        "org/gnome/desktop/interface" = {
+          color-scheme = "prefer-dark";
+        };
       };
 
-      gtk3.extraConfig.gtk-application-prefer-dark-theme = true;
-    };
+      services.darkman = {
+        enable = true;
 
-    dconf.settings = {
-      "org/gnome/desktop/interface" = {
-        color-scheme = "prefer-dark";
-      };
-    };
+        settings = {
+          lat = location.latitude;
+          lng = location.longitude;
+          usegeoclue = location.provider == "geoclue2";
+        };
+
+        darkModeScripts.gtk-theme = ''
+          ${lib.getExe pkgs.dconf} write /org/gnome/desktop/interface/color-scheme "'prefer-dark'"
+          ${lib.getExe pkgs.dconf} write /org/gnome/desktop/interface/gtk-theme "'Adwaita-dark'"
+        '';
 
-    xdg.configFile = {
-      # "gtk-3.0/gtk.css".source = gtk3CssFile;
-      "gtk-4.0/gtk.css".source = gtk4CssFile;
+        lightModeScripts.gtk-theme = ''
+          ${lib.getExe pkgs.dconf} write /org/gnome/desktop/interface/color-scheme "'prefer-light'"
+          ${lib.getExe pkgs.dconf} write /org/gnome/desktop/interface/gtk-theme "'Adwaita'"
+        '';
+      };
     };
-  };
 }
-- 
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