these 5 derivations will be built:
  /nix/store/knmj2cy5rkk4jih2i0sxhv1wppjp98ki-source.drv
  /nix/store/17mqw5nbwsj26szx5vj2qbz7iq51086k-ctx-2.4.1-vendor-staging.drv
  /nix/store/cz86wk3glkpm7vfr1k7qdlwfark84mb9-ctx-2.4.1-vendor.drv
  /nix/store/nxzhfq4clrqjx8mfxwx5llc18gcl0dz2-ctx-2.4.1.drv
  /nix/store/gjxg2di1ff1dcfr8davk0kszhy7bxjfh-check-ctx.drv