these 4 derivations will be built:
  /nix/store/zmxnxxm1ypaxp8x22zsp6a9m5w9xi93l-clan-cli-source.drv
  /nix/store/1yycpxdgcldcmxl1y1wb238yi40hvhxv-clan-cli.drv
  /nix/store/vjga88rncfx2a5gzbdbqs3gpfqjpvpi8-tofu.drv
  /nix/store/h9278fzvwk3ij6kncx4f8jj81g7aj6ma-cache-new.drv