these 4 derivations will be built:
  /nix/store/qy1skjbn957gl1my4pzzm3q97068n58k-ctx-2.1.3-vendor-staging.drv
  /nix/store/3jj1mnx2vbzkff8y43slmr6av4qrfddq-ctx-2.1.3-vendor.drv
  /nix/store/1dxpipyvjdwfwj3ww0fr9gm4fmm3xara-ctx-2.1.3.drv
  /nix/store/g7dmamzkfx9rsychrzz24yh1kc94gjgl-check-ctx.drv