Require protobuf only in dev/test

[v0idpwn]

This fixes a potential regression on #351.

On README it's stated:

    # We don't force protobuf as a dependency for more
    # flexibility on which protobuf library is used,
    # but you probably want to use it as well

At @coingaming we rely on this characteristic of :grpc to be able to use an internal fork of :protobuf. Due to this change, we get a dependency conflict and aren't able to use :grpc v0.8+.

[polvalente]

I think this has already been changed before.

Can you check the history to confirm, please?

Simplest solution for you is to override: true on this dependency

[v0idpwn]

I think can't override: true because I'm a package too :(

Will double check the history

I'd understand if its not accepted (but then the readme would need to be updated)

[v0idpwn]

@polvalente #233

[v0idpwn]

@sleipnir was the change intentional? 👀

[v0idpwn]

Looks like it breaks without this dependency, because of some new files that were added that use :protobuf in comp time...

[sleipnir]

@v0idpwn Yes for implementing http transcoding we had to add some things, I'm not sure if it's possible to do without this. I may look into this in the future and try to reopen this issue if I see a solution.

[v0idpwn]

Closing as it doesn't seem possible anymore. Will follow up with a PR removing the statement from the readme.