Travis CI / Bundler 2.0 not happy

[danmayer]

I have all the tests passing except 2.3 as Travis-CI doesn't seem to let us install bundler 1.3.x but keeps trying to use 2.0...

https://travis-ci.org/danmayer/coverband/builds/476105586

I followed directions here and it works for everything except Ruby 2.3

https://docs.travis-ci.com/user/languages/ruby/#bundler-20

[danmayer]

blah I tried a few more things... and it might be easier to update to bundler 2.0, but then all the Rails 4 tests fail...

https://travis-ci.org/danmayer/coverband/builds/476116789

a bit of a catch 22, I think we should be able to keep using bundler 1.3 but something with Ruby 2.3 on Travis CI won't let me downgrade bundler from the 2.0.x line

any ideas @kbaum

[kbaum]

Judging by the errors, it looks like rails 4 flat out does not support bundler 2.0. Can't make much sense of why ruby 2.3 doesn't work with bundler 1.3.x. Feel like it might be a little early to drop support for rails 4.x?

[kbaum]

Looks to me like it's a problem with travis:

Some options:

1. Try circle
2. Drop ruby 2.3 from the build
3. Drop rails 4.X from the build

Circle might be some work but might be worth the effort? Dropping ruby-2.3 feels reasonable too considering we are now at 2.6.

[danmayer]

OK it took way longer than it should have and it would have been cleaner to do my tests on a branch... but I got everything passing with bundler 1.17.3 on travis-ci...

https://travis-ci.org/danmayer/coverband/builds/476675778

travis-CI file:

before_install:
  - rm /home/travis/.rvm/gems/ruby-2.3.7@global/specifications/bundler-2.0.1.gemspec || true
  - gem uninstall bundler || true
  - gem install bundler -v '1.17.3'
  - bundler --version

cleaner version: https://travis-ci.org/danmayer/coverband/builds/476677975

This had some good tips but the find trick didn't work for me: travis-ci/travis-ci#8717

[kbaum]

Well done!