feat: restore build-essential dep, but in nginx

Author: samrose

ansible/tasks/setup-nginx.yml

@@ -5,6 +5,7 @@
 - name: nginx - system dependencies
   apt:
     pkg:
+      - build-essential
       - openssl
       - libpcre3-dev
       - libssl-dev

nix/pgbouncer.nix

@@ -43,4 +43,4 @@ stdenv.mkDerivation rec {
     maintainers = with maintainers; [ _1000101 ];
     platforms = platforms.all;
   };
-}
+}