these 4 derivations will be built:
  /nix/store/10ga1lih2axxwg9mxc9ak9vz07vx2w7w-clan-cli-source.drv
  /nix/store/as7ing36dafamiszn4jkyxvv6ppiv0nx-closure-info.drv
  /nix/store/ydx4mhxiixkxbp01i0xwhgrgpdkk91bi-clan-cli.drv
  /nix/store/y6n3nxr481mgs1zycrqpxwkd9b6l4gfn-check-vars.drv
error: path '/nix/store/r6kfjrla274453s49av9vwaj7adr32p5-check-vars' is not valid
error: Cannot build '/nix/store/y6n3nxr481mgs1zycrqpxwkd9b6l4gfn-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/r6kfjrla274453s49av9vwaj7adr32p5-check-vars