these 5 derivations will be built:
  /nix/store/4wx2k9zvpjc2dpg7r7x38r481g0pynri-source.drv
  /nix/store/y4cfzcrws5gkpln2yzyjhpvdxnqlnmi8-ctx-2.0.1-vendor-staging.drv
  /nix/store/mc8asmnlfn3xr5s3g8zajibm50phd2lf-ctx-2.0.1-vendor.drv
  /nix/store/0nn7x1ffzx72vp6nj6ryrsjwr0cg5prn-ctx-2.0.1.drv
  /nix/store/ikvpwdyaps8xbz338hd3ndsjbn5ksvl9-check-ctx.drv