these 3 derivations will be built:
  /nix/store/125xjp1adm717rj8hci08vz3b2ldqlik-cargo-vendor-dir.drv
  /nix/store/k05jqxblw7m512l6r3frc3vxp731y2j5-primer-assets.drv
  /nix/store/4fwm7bwdhw9qrhmja8cfp24b8jj2pyll-maintainer-mode-0.1.0.drv