coordinate dev Sparkle updates

[incanus]

We need to figure out if and by what system we would auto-update a dev Sparkle feed for testers. Currently this URL is defined in the first dev build of 0.7.0 I posted as http://mapbox.com/tilemill/platforms/osx/appcast-dev.xml, which doesn't exist yet.

While we might auto-upload nightly builds automatically, we probably don't want to push every one of these to Sparkle or that would be turbo-annoying.

Maybe something like tabs with a b in them, like 0.7.0b1?

/cc @willwhite

[incanus]

Feed gets updated in the build script now: 19650f2

[incanus]

Bringing over some previous discussion:

Outlining some details to start:

• Setup a second target in the Xcode project for dev builds.
• Tag dev builds like v0.7.0b1.
• Dev target will pay attention only to b1-style tags and include them in the about box.
• Dev target will use alternate Sparkle feed in Info.plist.
• On stable releases, add them to the dev Sparkle feed as well. Dev feed will recognize that they are stable and clearly mark them as "release".

[willwhite]

I'd like to avoid tagging dev builds for now. Instead we can just use the output of git describe --tags to decide if we are between tags and thus working on a dev version.

[incanus]

Ok, so how do we decide what to push to dev Sparkle then? Couple ideas:

• Automatically on, say, Wednesday, push the latest master build.
• Start a new branch for dev releases and update Sparkle whenever that is pushed to. Danger could be multiple quick releases if someone forgets this, though.
• Manually update Sparkle with a build hash, perhaps with an easy script. e.g. make sparkle c8cba5 && git commit -a -m 'push dev release' && git push

[incanus]

Latest thinking from #mapbox:

incanus77: another way might be a text file where we add a line to the top
incanus77: even scripted
incanus77: something like "###### 0.7.1 <sig> <date>
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incanus77: commit hash, version we are working towards, sig for that hash build, date
incanus77: that triggers a jekyll rebuild of dev appcast
willwhite: that sounds fine to start
willwhite: a separate yaml file
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incanus77: yeah that's sounding good

[willwhite]

This is done for now as a dev flag in the tilemill changelog.