these 10 derivations will be built:
  /nix/store/by1pz3lim6grppzzy7j474bwj2nvnpm2-punchcard-19700101.drv
  /nix/store/5rg6ywxpq7xp49a2mljl8y266szvz0lg-unit-script-punchcard-punchcard-start.drv
  /nix/store/h2h3869cf7vqsdgcaw1fnslzpalsx2da-unit-punchcard-punchcard.service.drv
  /nix/store/1dlcna1wrx0db7j6cbfpzqmiw16bqpdi-system-units.drv
  /nix/store/qw1cfg5avqfib6qgp32g8x187fdbv7ly-etc.drv
  /nix/store/iv0cbhxh0q91rxpx57whxlsnzy2hzxni-activate.drv
  /nix/store/ybdxcv4k9j7rfha6xhdz0717czpl7x22-nixos-system-server-test.drv
  /nix/store/38nhrad6wcfak7fx4r7dr7myl29rqmnq-closure-info.drv
  /nix/store/6vl7lb91hrqizsmw55mm23h1ld1a0fqd-nixos-test-driver-punchcard.drv
  /nix/store/ma60562hawj95clrcspb3rmbbg8h1n47-container-test-run-punchcard.drv