these 3 derivations will be built:
  /nix/store/8r6fxc4lwpgi865nvkcx0f0qlpanxxng-docs-site-main-site.conf.drv
  /nix/store/klpspgp5r51qdkqxafqchkpjwr8a2hwa-docs-site-main-nginx.conf.drv
  /nix/store/5vsr7yhc7aa3lhlc3dwqnv2iwzvflwhh-docs-backend-test.drv