these 2 derivations will be built:
  /nix/store/6qmn9vhb3g3v9yk5br94xjpb5xq75lrj-nixos-test-driver-wrappers-regression-PSQL-1387.drv
  /nix/store/zp1cbg9rpy4yfl4qz91m0ycrwvzpf0ni-vm-test-run-wrappers-regression-PSQL-1387.drv