these 4 derivations will be built:
  /nix/store/dyn78nf58jgr8wik80cdvidhi9q25zb8-source.drv
  /nix/store/1fq7wx6v9vw1fxmwvxbidlmx70al5397-ctx-1.1.1-vendor-staging.drv
  /nix/store/h046vdanb3zb2aapkj1rk23bbv8vp0cs-ctx-1.1.1-vendor.drv
  /nix/store/vy07c0y7iscvv65wi34b5nvd39x218mr-ctx-1.1.1.drv