don't know how to build these paths:
  /nix/store/4hb70ly8dl4pqp9lzppqjrbp9jcmhl2f-nix-shell.drv
warning: ignoring the client-specified setting 'store', because it is a restricted setting and you are not a trusted user
error: gRPC QueryValidPaths on 'nix-store.geninf.io:50051' failed: error: unable to download 'https://cache.geninf.io/vhg62gd8mkpxrgddwv3w43p7mskz6304.narinfo': HTTP error 503

              response body:

              <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
              <Error>
                  <Code>SlowDown</Code>
                  <Message>Your account has made too many requests; try again later.</Message>
              </Error>