these 7 derivations will be built:
  /nix/store/ck527y7gyganh3qq25znaspgfqdvdnjm-unit-postgresql-setup.service.drv
  /nix/store/12zfz4lgf56snwmp96p5nbk2s7qnas90-system-units.drv
  /nix/store/16cgv8dh4bh44sqr5gswfhx9f9835dby-etc.drv
  /nix/store/dqgccib2z3qrd1w0m1z74l5dvbd87671-nixos-system-server-test.drv
  /nix/store/46gh9kfq3cwcnm5fgvxgsq1ha3w248fg-nixos-system-server-test.drv
  /nix/store/9q3dmr83mbcglj74ry57ryn1g0b7n9y6-nixos-test-driver-hypopg.drv
  /nix/store/p305hl34zisy1qcvy36af8piln9cx85y-vm-test-run-hypopg.drv
these 9 paths will be fetched (79.3 KiB download, 498.4 KiB unpacked):
  /nix/store/bmp1p5j5ix1k8skknxivqqyc2khk2nyq-activate
  /nix/store/jcy48fjp9v8lidy21ig6ww4s3k4j9yq5-closure-info
  /nix/store/fd88z0sns46b8wjbbq0j1x6liyn73iyn-etc
  /nix/store/2bviab42vg4l3h4mvnph4f9cifqx6fxl-nixos-system-server-test
  /nix/store/hdym0sj5hjj8hy1cdnb21i5l2s2nhsxi-nixos-system-server-test
  /nix/store/axcnzi01lz8hnkqr7bdmgfv1kphldz75-nixos-vm
  /nix/store/cw7nbdgw15c09xg6kcq6x0qiyjm9nzwd-run-nixos-vm
  /nix/store/r3sr4dc80y856gq13lb7h221p7j3mrhd-system-units
  /nix/store/1la480wpwcd3z4qfd03s86f6jqq82hgc-unit-postgresql-setup.service