cannot load such file -- google/protobuf_c

[PierreMesure]

I'm not able to successfully build our existing documentation anymore, neither with 0.4.0 (the version I had been using since last year) nor with the latest 0.6.2.

I've added the Github Actions workflows (changed the branch name since we use master), they don't work. But even keeping our old code and using the classic Github Pages workflow gives me an error message.

Any idea? I'm trying to see the difference with the template but I can't see any that would trigger the errors.

[mattxwang]

Thanks for submitting a discussion @PierreMesure! It turns out that this issue is orthogonal to Just the Docs specifically. I took a quick look, and the issue seems to be that your Gemfile.lock is missing the linux platform, which is what GitHub Actions runners use; so, any platform-dependent Ruby code (like C extensions - which is protobuf) won't be runnable.

You can resolve this problem by running:

$ bundle lock --add-platform x86_64-linux

and then committing the change produced in your Gemfile.lock. Let me know if this doesn't resolve the problem!

---

If you're curious, the bundler docs explains slightly more what's going on.

[PierreMesure]

Wow, thank you so much Matt!

I now see that the platform is already in the Gemfile.lock provided in the template so I guess most new users won't be affected. But I hope this discussion can be found by others who are migrating like me and wondering why they get this message. 😊

As you can see here, the problem is now fixed.