Dependencies do not build with Ruby 2.7

[goodmami]

I'm on Pop!_OS 20.04 (like Ubuntu 20.04) with Ruby 2.7 and both mysql2 and sqlite3 failed during bundle install. I was able to work around the issue by installing the ruby-mysql2 and ruby-sqlite3 packages distributed by Ubuntu's repositories instead of installing them with bundle/gem. I'm not a ruby person so there might be a more straightforward way to fix this.

Related: brianmario/mysql2#1113

[mavam]

Thanks for reporting and describing your workaround. Unfortunately I don't have the bandwidth at the moment to put in a PR. However, I'm happy to review PRs from the community.

[goodmami]

Thanks for the very fast response! I won't be able to submit a PR but I thought the workaround in the issue could at least help others who face the same problem.