these 5 derivations will be built:
  /nix/store/091bj61y0ndwbm5x0sa1qk1kwqw09xpd-clan-runtime.drv
  /nix/store/bslcb489hnw2fxfhvigd5lin0ic8cg5g-clan-cli-source.drv
  /nix/store/avnknb84kgcmjwdv6qjjibb2wzrz3qzd-clan-cli.drv
  /nix/store/w10y5z76w868j9ar8a38zb5p5bw7r88z-closure-info.drv
  /nix/store/ypj7228rq33lwcm6xrra0ms8dw27x8pq-check-vars.drv
error: path '/nix/store/fagnz0rcq58yy641b3c1kyiv9wilsv92-check-vars' is not valid
error: Cannot build '/nix/store/ypj7228rq33lwcm6xrra0ms8dw27x8pq-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/fagnz0rcq58yy641b3c1kyiv9wilsv92-check-vars