these 4 derivations will be built:
  /nix/store/6sfqxkzwngxb8zzyzmw9q733x16a4aj0-source.drv
  /nix/store/rfizxa4rsb437qvdliq1zldlzkm5jr1h-ctx-1.2.2-vendor-staging.drv
  /nix/store/k1gxnl427sypjizyd4lfnpczzbi82g9z-ctx-1.2.2-vendor.drv
  /nix/store/szqjyiffwbl1h2wj2k9vkdx5w5c11ajw-ctx-1.2.2.drv