these 2 derivations will be built:
  /nix/store/8nbqjhylpm7ygwcz3f0g4dnr0l0c016j-nixos-test-driver-wrappers-regression-PSQL-1387.drv
  /nix/store/svbrd6h9isbw7w74gpp7za1x4kdgcqhq-vm-test-run-wrappers-regression-PSQL-1387.drv