support spring 4

[fcheung]

This runs ok on my rails 6.1 apps with spring 4. Main cause of incompatibility was https://github.com/rails/spring/commit/7f4ddf9f280012e2af7a43f8a96b310a4d26235a#diff-8079047024eafaf078a5ec33c6e989295d077b3306c92c168a4cc043c9f780b2

There is one remaining failing test - this comes from https://github.com/rails/spring/blob/main/test/support/watcher_test.rb#L192

As far as I can tell this has probably always failed: this expects a watcher to have a check_stale method which spring-watcher-listen has never had. This feels like a spec of the polling implementation rather than a spec of the high level functionality - check_stale in poller.rb is the main 'walk all the files and check their mtime', which is a concept that just doesn't existing in spring-watcher-listen.

[toobulkeh]

Note that this drops support for Ruby < 2.7.3 and Spring < 4.0 (was that required?)

[fcheung]

It does indeed. Spring 4 also drops support for older rubies which is why I made that change.

[Lokideos]

@fcheung @toobulkeh Hello, gentlemen! Any plans regarding merging this PR into master?

[fcheung]

I’ve bee. Using this without issue - not sure who is a maintainer here

[der-flo]

I’ve bee. Using this without issue - not sure who is a maintainer here

@rafaelfranca Can you clarify the situation as the last one who committed to the gem? @jonleighton Can you clarify as original maintainer?

May we help with anything?

[tmoney100]

Any way to get this merged in? Please. Thank you.

[afdev82]

any news?

[kemalmutlu]

any news? @jonleighton

[thilonel]

@rafaelfranca @e2 @jonleighton could someone please merge this and release a new version? 🙏

[williantenfen]

@rafaelfranca alguma news? 🇧🇷