these 5 derivations will be built:
  /nix/store/n2d872jc57b6c0mrwbpidw1sszww9n9w-source.drv
  /nix/store/5mnqdq1vcn587rj6g44xfkp1rifcj2yd-ctx-2.2.5-vendor-staging.drv
  /nix/store/9wr7wc7a3slg6wkiznp2q38wdk1r6vzp-ctx-2.2.5-vendor.drv
  /nix/store/nqcqzlblxgdp4hbv3315jyzxzz24x63i-ctx-2.2.5.drv
  /nix/store/lbv23raa6aiynwzgajs2qr0jqfz3c74n-check-ctx.drv