these 4 derivations will be built:
  /nix/store/6a4ryqr9zcqa9biql4svwjpwcprcy12c-clan-cli-source.drv
  /nix/store/8zcarzyvkr6w24zhgkb3kfpq38jb5d3f-closure-info.drv
  /nix/store/lh8186h89cw1ggqiifsa6zsgnlfsk54x-clan-cli.drv
  /nix/store/vk6j8bh7yny727si1aqfvs0208p37aan-check-vars.drv