these 4 derivations will be built:
  /nix/store/haxbsbi2kiq91q19ak1pk5zkmnbh5lnc-source.drv
  /nix/store/kmarggnyg4p5p59ps6mx65jscin5myv6-ctx-1.1.1-vendor-staging.drv
  /nix/store/gnm850zldxj86iri5iain8lwk9mr48bx-ctx-1.1.1-vendor.drv
  /nix/store/giiyk9jmv7620p4laddg1hbn15wvvi7n-ctx-1.1.1.drv