these 4 derivations will be built:
  /nix/store/mx6n6anijvm4b15zlf6q0szc0767d6nx-clan-runtime.drv
  /nix/store/df8s22ql0a1dw89lnxkbbgb5p109f5qi-clan-cli-source.drv
  /nix/store/z2ray184h7bw8348g0866snpdhv4ls22-clan-cli.drv
  /nix/store/zficlzfy7w18aj6nflx2r31c1lswm6qg-nix-shell.drv