this derivation will be built:
  /nix/store/21shd47ldjxrazg6bzgwknkvzpz82y44-vm-test-run-amcheck-upgrade.drv
these 15 paths will be fetched (109.9 KiB download, 696.5 KiB unpacked):
  /nix/store/k0r1x334m7677m1symwfclww8l7las4h-closure-info
  /nix/store/7841xn2z0k2skl8yydj6b2m1s061fmjg-etc
  /nix/store/abk3zvkcgn1h1ri0ib4qp4n2ssmx0gwk-etc
  /nix/store/j8b3s2wbs1vdbgkhq76rhyvcf17s8qla-nixos-system-server-test
  /nix/store/jizhqnnz74nbbxznc4153hd1japbabhs-nixos-system-server-test
  /nix/store/pcwdp1x9wanvcfghcg86r352kw3jz158-nixos-test-driver-amcheck-upgrade
  /nix/store/ijgx2k70xjss96mrqdn1lv4ixlsi0h23-nixos-vm
  /nix/store/17lll86gxqk6i0ssxdazmgsfxif6fgqn-postgresql-init
  /nix/store/n4y1dkbnd2qm1qd5gisb6rn59c9wy1cm-postgresql-migrate
  /nix/store/lrkaiki8c67rpas693cqqaxcyr5s4ihr-run-nixos-vm
  /nix/store/3d6c09y3h1ppf5qm5xzg2d579l7bhknd-system-units
  /nix/store/nn9bzvpmf35yd1z0f547ngpdj2b1vslp-system-units
  /nix/store/8wyyjb3gypbilnw6bhf3n4jjwikqm660-unit-postgresql-migrate.service
  /nix/store/fp86iv94g0ym67q48yf7z1y0v3fsxy2p-unit-postgresql.service
  /nix/store/pn2ki19m55kqck40gnxs1rqwmm5h2pm0-unit-postgresql.service