CI: Add "3.0" to matrix, and bump gem version to "3.0.1.pre" to differentiate from built-in

[olleolleolle]

No description provided.

[MSP-Greg]

Re the Ruby (Windows) master failures, if I change the version here to 3.1.0 or 3.0.1.pre, it builds and installs (using pkg/*.gem) fine.

Seems like a RubyGems issue? If I install digest, it acts like it's installing digest:3.0.0, but it doesn't do anything, as the version matches the default gem... Not sure...

Maybe a Ubuntu master/head build should be added to CI also?

[olleolleolle]

@MSP-Greg 👋 Good idea, I added a Ubuntu20+head as an extra element.

[MSP-Greg]

@olleolleolle

Thanks. I knew it was not a Windows issue, but a Ruby master/head issue. People tend to always assume Windows issues are OS specific. The 'debug' builds are master/head builds.

So, the solution (for now) might be to increment the version?

[olleolleolle]

@MSP-Greg Do you mean "increment the version of this gem"?

[MSP-Greg]

@olleolleolle

Do you mean "increment the version of this gem"?

Yes.

Sorry, too much multi tasking this morning... I think the issue that's confusing RubyGems is that with Ruby master/head, the default digest gem is also version 3.0.0?

[olleolleolle]

@MSP-Greg In order to test that assumption, I made a change to the version directive in the gemspec of this gem, now, in this PR, to see if there is any change in results in the matrix.

[mrkn]

+1 Looks good to me.