these 4 derivations will be built:
  /nix/store/j9rr07wy6m8xqcknfv60042scfijxmnd-clan-cli-source.drv
  /nix/store/g05y1p91dc52rpa5xkhbllghwq1cr3vw-clan-cli.drv
  /nix/store/kd3rsv7s4piqh9l82ildyayy9q2a2kkz-closure-info.drv
  /nix/store/a4pbcwwwdp797vms0zjziw69cpsq6iim-check-vars.drv
error: path '/nix/store/mqlv5n3zwv6id2480cpb3r1q3hh8jz09-check-vars' is not valid
error: Cannot build '/nix/store/a4pbcwwwdp797vms0zjziw69cpsq6iim-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/mqlv5n3zwv6id2480cpb3r1q3hh8jz09-check-vars