keycloak: Add keywind theme

modules/keycloak/default.nix

@@ -1,7 +1,29 @@
-{ config, lib, ... }:
+{ pkgs, config, lib, ... }:
 with lib;
 let
   cfg = config.eboskma.keycloak;
+
+  keywindTheme = pkgs.stdenv.mkDerivation {
+    pname = "keycloak-theme-keywind";
+    version = "unstable-2023-10-22";
+
+    src = pkgs.fetchFromGitHub {
+      owner = "lukin";
+      repo = "keywind";
+      rev = "b1c47673ae091bc1a85a04434f2929ba5b8fa8bf";
+      hash = "sha256-Y88L7oW127Fex2D33A0tMnaJtSvM7hFZkzuVXZYoBhQ=";
+    };
+
+    doConfigure = false;
+    doBuild = false;
+    doCheck = false;
+
+    installPhase = ''
+      mkdir $out
+      cp -r $src/theme/keywind/* $out/
+    '';
+
+  };
 in
 {
   options.eboskma.keycloak = { enable = mkEnableOption "keycloak"; };
@@ -17,6 +39,11 @@ in
         http-port = 8081;
         proxy = "edge";
       };
+
+      themes = {
+        keywind = keywindTheme;
+      };
+
     };
 
     services.caddy = {