Update start page link macOS download link

[Stereo]

When we do a 20.10 release, we should update the link for the macOS download on the home page to the new builds at

​https://github.com/openstreetmap/josm/releases/latest/download/JOSM-macOS-java15.zip

The link 404s for now. ​https://github.com/openstreetmap/josm/actions will show the build process. Running all the tests and building a release takes about 25 minutes (but I have ideas to separate tests and builds for 20.11).

[Don-vip]

Replying to Stereo:

The link 404s for now.

What needs to be done to get a proper link?

[Stereo]

A release version of JOSM needs to be built on github.

This is currently decided like this:

          if [[ "$josm_revision" == `curl --silent https://josm.openstreetmap.de/tested` ]]; then
            sed -i .bak '/Is-Local-Build/d' resources/REVISION
            echo "josm_prerelease=false" >> $GITHUB_ENV
          else
            echo "josm_prerelease=true" >> $GITHUB_ENV

In plain language: if my revision is what https://josm.openstreetmap.de/tested returns, I'm not a pre-release.

I'm not familiar with how /tested works, but hope that it will be automatically updated when the milestone completes, long before the git mirror syncs?

[Don-vip]

It can happen long after, as we decide manually to promote a build as the new "tested". From a few minutes to sometimes a few days.

[Stereo]

Oh no! Then the shell script will never evaluate to true, and a re-build has to be triggered when a commit gets tagged as tested.

I'll think about it, but we might be able to use the git tags to do it.

[Don-vip]

Can't we just use GitHub API to perform the release from JOSM server side? This would be the best.

[Stereo]

What happens on the server when a release gets made?

[Don-vip]

Milestone renamed

[Don-vip]

Replying to Stereo:

What happens on the server when a release gets made?

All the required stuff to get everything up to date on JOSM website. If we can call GitHub API we can update the scripts on server side to perform the release there as well.

[Stereo]

I've put in a link to my own 'release' build for 20.11. For 20.12, Don-vip and I are working on automating it.