these 5 derivations will be built:
  /nix/store/94yiab9r4ddps6a4jvjc3qjw927gq1kk-source.drv
  /nix/store/0zvvil9alypybvpi08lf264lq9vzfds7-ctx-1.6.3-vendor-staging.drv
  /nix/store/s34rzp5993if49ir0zjziy9xn27ppq01-ctx-1.6.3-vendor.drv
  /nix/store/f4pa4xl36k42yf8bgr92nd4lwqm4j5y4-ctx-1.6.3.drv
  /nix/store/hc5kxbfq79j9nypdlm3lhgkcw4xfqf13-check-ctx.drv