these 4 derivations will be built:
  /nix/store/mssifi01psjlla41si3swpy0jsc0vhgf-clan-cli-source.drv
  /nix/store/w70s6374gagjs4nb482rl0rykzyq92qc-clan-cli.drv
  /nix/store/g2vgaclib6d3kdbh9cg6i31pjshmy3kx-clan.drv
  /nix/store/bhz34nv0cmhvsha0ba32jd4kqw2sinh0-nixfiles.drv
building '/nix/store/mssifi01psjlla41si3swpy0jsc0vhgf-clan-cli-source.drv'