these 3 derivations will be built:
  /nix/store/ssjy3h8fml0sa2m9ymfvnpsd82v71b3q-docs-site-main-site.conf.drv
  /nix/store/ax0vplgd4n8hjh3jab9grbp4p025d3na-docs-site-main-nginx.conf.drv
  /nix/store/lrq480x6lz1611l56h2hz1wgngxvhw72-docs-backend-test.drv