Update

home/system/gtk/default.nix

@@ -1,4 +1,28 @@
-{ pkgs, ... }: {
+{ config, pkgs, lib, ... }:
+let
+  accent = "#${config.lib.stylix.colors.base0D}";
+  foreground = "#${config.lib.stylix.colors.base05}";
+  background = "#${config.lib.stylix.colors.base00}";
+  background-alt = "#${config.lib.stylix.colors.base01}";
+
+  c0 = "#${config.lib.stylix.colors.base00}";
+  c1 = "#${config.lib.stylix.colors.base08}";
+  c2 = "#${config.lib.stylix.colors.base0B}";
+  c3 = "#${config.lib.stylix.colors.base0A}";
+  c4 = "#${config.lib.stylix.colors.base0D}";
+  c5 = "#${config.lib.stylix.colors.base0E}";
+  c6 = "#${config.lib.stylix.colors.base0C}";
+  c7 = "#${config.lib.stylix.colors.base05}";
+  c8 = "#${config.lib.stylix.colors.base03}";
+  c9 = "#${config.lib.stylix.colors.base08}";
+  c10 = "#${config.lib.stylix.colors.base0B}";
+  c11 = "#${config.lib.stylix.colors.base0A}";
+  c12 = "#${config.lib.stylix.colors.base0D}";
+  c13 = "#${config.lib.stylix.colors.base0E}";
+  c14 = "#${config.lib.stylix.colors.base0C}";
+  c15 = "#${config.lib.stylix.colors.base07}";
+
+in {
 
   qt = {
     enable = true;
@@ -8,9 +32,118 @@
 
   gtk = {
     enable = true;
+
+    theme = lib.mkForce { name = "FlatColor"; };
+
     iconTheme = {
       package = pkgs.kora-icon-theme;
       name = "Kora";
     };
+
+    font = { name = config.stylix.fonts.serif.name; };
+
+    gtk3.extraConfig = {
+      Settings = ''
+        gtk-application-prefer-dark-theme=1
+      '';
+    };
+
+    gtk4.extraConfig = {
+      Settings = ''
+        gtk-application-prefer-dark-theme=1
+      '';
+    };
+  };
+
+  home.file = {
+    ".local/share/themes/FlatColor" = {
+      recursive = true;
+      source = pkgs.stdenv.mkDerivation {
+        name = "FlatColor";
+
+        src = pkgs.fetchFromGitHub {
+          owner = "jasperro";
+          repo = "FlatColor";
+          rev = "0a56c50e8c5e2ad35f6174c19a00e01b30874074";
+          hash = "sha256-P8RnYTk9Z1rCBEEMLTVRrNr5tUM/Pc9dsdMtpHd1Y18=";
+        };
+
+        buildPhase = ''
+          mkdir -p $out
+          # delete the default gtk-color-scheme:
+          file="./gtk-2.0/gtkrc"
+          sed -i '3,29d' $file
+          sed -i '3i include "../colors2"' $file
+
+          file="./gtk-3.0/gtk.css"
+          sed -i '2,10d' $file
+          sed -i '2i @import url("../colors3");' $file
+
+          file="./gtk-3.20/gtk.css"
+          sed -i '2,26d' $file
+          sed -i '2i @import url("../colors3");' $file
+
+          cp -r . $out 
+        '';
+      };
+    };
+
+    ".local/share/themes/FlatColor/colors2".text = ''
+      bg_color:${background}
+      color0:${c0}
+      color1:${c1}
+      color2:${c2}
+      color3:${c3}
+      color4:${c4}
+      color5:${c5}
+      color6:${c6}
+      color7:${c7}
+      color8:${c8}
+      color9:${c9}
+      color10:${c10}
+      color11:${c11}
+      color12:${c12}
+      color13:${c13}
+      color14:${c14}
+      color15:${c15}
+      text_color:${foreground}
+      selected_bg_color:${accent}
+      selected_fg_color:${foreground}
+      tooltip_bg_color:${background-alt}
+      tooltip_fg_color:${foreground}
+      titlebar_bg_color:${background}
+      titlebar_fg_color:${foreground}
+      menu_bg_color:${background-alt}
+      menu_fg_color:${foreground}
+      link_color:${accent}
+    '';
+
+    ".local/share/themes/FlatColor/colors3".text = ''
+      @define-color color0 ${c0};
+      @define-color color1 ${c1};
+      @define-color color2 ${c2};
+      @define-color color3 ${c3};
+      @define-color color4 ${c4};
+      @define-color color5 ${c5};
+      @define-color color6 ${c6};
+      @define-color color7 ${c7};
+      @define-color color8 ${c8};
+      @define-color color9 ${c9};
+      @define-color color10 ${c10};
+      @define-color color11 ${c11};
+      @define-color color12 ${c12};
+      @define-color color13 ${c13};
+      @define-color color14 ${c14};
+      @define-color color15 ${c15};
+      @define-color selected_bg_color ${accent};
+      @define-color selected_fg_color ${foreground};
+      @define-color bg_color ${background};
+      @define-color fg_color ${foreground};
+      @define-color base_color @bg_color;
+      @define-color text_color @fg_color;
+      @define-color text_color_disabled mix(@text_color, @base_color, 0.4);
+      @define-color tooltip_bg_color ${background-alt};
+      @define-color tooltip_fg_color ${foreground};
+    '';
   };
 }

home/system/mime/default.nix

@@ -4,8 +4,24 @@
     defaultApplications = {
       "text/markdown" = "nvim.desktop";
       "text/plain" = "nvim.desktop";
+      "text/x-shellscript" = "nvim.desktop";
+      "text/x-python" = "nvim.desktop";
+      "text/x-go" = "nvim.desktop";
+      "text/css" = "nvim.desktop";
+      "text/javascript" = "nvim.desktop";
+      "text/x-c" = "nvim.desktop";
+      "text/x-c++" = "nvim.desktop";
+      "text/x-java" = "nvim.desktop";
+      "text/x-rust" = "nvim.desktop";
+      "text/x-yaml" = "nvim.desktop";
+      "text/x-toml" = "nvim.desktop";
+      "text/x-dockerfile" = "nvim.desktop";
+      "text/x-xml" = "nvim.desktop";
+      "text/x-php" = "nvim.desktop";
       "image/png" = "imv.desktop";
       "image/jpeg" = "imv.desktop";
+      "image/jpg" = "imv.desktop";
+      "image/webp" = "imv.desktop";
       "image/gif" = "org.qutebrowser.qutebrowser.desktop";
       "x-scheme-handler/http" = "org.qutebrowser.qutebrowser.desktop";
       "x-scheme-handler/https" = "org.qutebrowser.qutebrowser.desktop";