Catpuccin theme for forgejo

modules/forgejo/default.nix

@@ -1,11 +1,35 @@
 {
   config,
+  pkgs,
+  lib,
   ...
 }:
+let
+  theme = pkgs.fetchzip {
+    url = "https://github.com/catppuccin/gitea/releases/download/v1.0.1/catppuccin-gitea.tar.gz";
+    hash = "sha256-et5luA3SI7iOcEIQ3CVIu0+eiLs8C/8mOitYlWQa/uI=";
+    stripRoot = false;
+  };
+in
 {
+  systemd.services = {
+    forgejo = {
+      preStart =
+        let
+          inherit (config.services.forgejo) stateDir;
+        in
+        lib.mkAfter ''
+          rm -rf ${stateDir}/custom/public/assets
+          mkdir -p ${stateDir}/custom/public/assets
+          ln -sf ${theme} ${stateDir}/custom/public/assets/css
+        '';
+    };
+  };
+
   services.forgejo = {
     # TODO migrate to Postgres
     enable = true;
+    package = pkgs.forgejo;
     settings = {
       DEFAULT = {
         RUN_MODE = "prod"; # set to prod for better logs (worse performance)
@@ -18,6 +42,7 @@
         HTTP_PORT = 3002;
         ROOT_URL = "https://git.aciceri.dev";
       };
+      federation.ENABLED = true;
       mailer = {
         ENABLED = true;
         PROTOCOL = "smtp+starttls";
@@ -29,6 +54,20 @@
       other = {
         SHOW_FOOTER_VERSION = false;
       };
+      ui = {
+        DEFAULT_THEME = "catppuccin-mocha-blue";
+        THEMES = builtins.concatStringsSep "," (
+          [ "auto,forgejo-auto,forgejo-dark,forgejo-light,arc-gree,gitea" ]
+          ++ (map (name: lib.removePrefix "theme-" (lib.removeSuffix ".css" name)) (
+            builtins.attrNames (builtins.readDir theme)
+          ))
+        );
+      };
+      "ui.meta" = {
+        AUTHOR = "Andrea Ciceri";
+        DESCRIPTION = "My personal git forge";
+        KEYWORDS = "git,self-hosted,forgejo,open-source,nix,nixos";
+      };
     };
     secrets.mailer.PASSWD = config.age.secrets.autistici-password.path;
     dump.enable = true;