these 5 derivations will be built:
  /nix/store/4sbnv8di4mzw03jqfhrcpdv4hxda3d6c-source.drv
  /nix/store/qqfwvld2hk9f9c0y50sgjln71pv5ndy1-ctx-2.2.8-vendor-staging.drv
  /nix/store/z0xis3dxvpyqlazsdk0jrjxw9g74v8w3-ctx-2.2.8-vendor.drv
  /nix/store/42cw9z7sigm7vmg1cr0k1pfclhmy80jp-ctx-2.2.8.drv
  /nix/store/rwk3dn4pb0bk6g9r7mah8aw8lfhymczw-check-ctx.drv