these 5 derivations will be built:
  /nix/store/nc8wz6x6586lhdidzczxwrr4jzl7gcyj-clan-runtime.drv
  /nix/store/w2ixqs4w75732kxzlpk70fihbd3r8zxy-clan-cli-source.drv
  /nix/store/6pp6l8m5vswn4kk83zvxm0g7a53brsh7-clan-cli.drv
  /nix/store/wm7n9dlgxmaqz6c4n5mayjczp7s13i80-closure-info.drv
  /nix/store/qzzd445fk0sj6rrzpqxmwi2j5gywcjza-check-vars.drv
error: path '/nix/store/q66383k1n8kghn3d5zm3jq3nr9kd1hg5-check-vars' is not valid
error: Cannot build '/nix/store/qzzd445fk0sj6rrzpqxmwi2j5gywcjza-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/q66383k1n8kghn3d5zm3jq3nr9kd1hg5-check-vars