these 27 derivations will be built:
  /nix/store/031pwdffzvxhvvmdfclvqyx40dmvyzaf-unit-dbus.service.drv
  /nix/store/afxgqdycin2gyn48qng2xccb2sxgy4jz-unit-postgresql.service.drv
  /nix/store/s0mszp4f4fq5bzm44q5lvgdyk2fc6sj1-unit-postgresql-migrate.service.drv
  /nix/store/b9p9hx7prvbw02z65z7h2cxfx12hfajx-system-units.drv
  /nix/store/gck20w5p26m1x8225f2vzfn6196v4nqp-unit-dbus.service.drv
  /nix/store/sq2pz8hyigh1bwxr3yj7amg3jwqdwbjq-user-units.drv
  /nix/store/kkc8npfj56w538snckgmd16dljad4hbp-etc.drv
  /nix/store/kaygdqkab8m3fn3wvb8yn63baklbkv04-activate.drv
  /nix/store/b4pq5vqgv99gxmncfcgv2mwql75nf48z-nixos-system-server-test.drv
  /nix/store/597nkiwfndnj4g3ryawkh647rvvxl67r-unit-postgresql.service.drv
  /nix/store/9by7lvz69z0yycwihlmqvkvs8pswv5kj-system-units.drv
  /nix/store/kkn67xll272qgznxlbf7bbhpxkbql8gh-etc.drv
  /nix/store/kafv8gqdz2na8c0y0kfr3n3r78zrpx77-activate.drv
  /nix/store/cklsiyvqrgkzpaqnr4h5v516csznk9kh-unit-dbus.service.drv
  /nix/store/3fkgaffca8rq2s6g9ymps0hsd2yymsjj-user-units.drv
  /nix/store/nfa3r50marnr70fnz52nz1hyrzdzi4ra-unit-dbus.service.drv
  /nix/store/s7931h7g8x57839cp9vgqlqgkn4imvb9-unit-postgresql.service.drv
  /nix/store/rm2iy9kci5w8dzar5227n7cbd9qxbz9q-system-units.drv
  /nix/store/m3fs7z6j12mxpvr38mmj5mzg6jglfbwz-etc.drv
  /nix/store/n32i1k18f6h38wssj6pddidv8nbhhmkr-activate.drv
  /nix/store/qgv2hf44gp76m7jc4pd254b68pm4w8yg-nixos-system-server-test.drv
  /nix/store/q7x0lflnjpnhqjq4dn7wv9paq3j2asap-nixos-system-server-test.drv
  /nix/store/dkn995k4w0n28ni5gnncznsvspjmqzki-closure-info.drv
  /nix/store/wdw4azz78026509apb4pp92kk6qgyv68-run-nixos-vm.drv
  /nix/store/1mzqdq6c2z1m1289agikprs4w1y4hhj8-nixos-vm.drv
  /nix/store/ivagnjqqv428k2ir117ibjz6ifqdfsb1-nixos-test-driver-pgroonga.drv
  /nix/store/mc4dazxs5ndss2cvahj967lh8vrd5b5r-vm-test-run-pgroonga.drv