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From C├ędric Champeau <cchamp...@apache.org>
Subject Binary compatibility fixed + Kotlin DSL
Date Wed, 20 Mar 2019 07:21:53 GMT
Hi folks,

Some of you have noticed that I have fixed the binary compatibility reports
on master. I also fixed checkstyle and CodeNarc, which were failing to
execute. I did not, however, fixed the many errors we see when running
those, nor the ones with spotbugs. It's a bit annoying because it makes the
"build" task fail, but we can live with that for some time.

Some of you noticed, because this is the first time I introduce a Gradle
Kotlin DSL script for this. Let me explain why: first, it gives a better
user experience: completion in the IDE is working, and you can navigate to
sources. Second, its syntax is so close to the Groovy one that if I had
replaced .kts with .groovy, I bet hardly anyone would have noticed.

To me it's a step towards a better build: we should'nt see this as a threat
to Groovy, and I'm not saying that it wouldn't have been possible to
achieve the same thing with Groovy, but this is the reality now: the Kotlin
DSL for Gradle gives a better UX than the Groovy one. I think it' going to
be particularly important for newcomers in the future. And as I am the main
maintainer of the build, it's also important to me, given the little amount
of time I can give to this project. My plan is to migrate the build to
Kotlin, slowly but surely, and as part of this effort, remove a lot of the
bad practices we're using, or internal APIs. Publishing for example is in a
terrible state.

But coming back to this build script: take a look at it and tell me if it's
not as clear, or even more readable than the Groovy one (you can compare
with the old binarycompatibility.groovy file). Also, I strongly believe
that's an opportunity for us to learn from Kotlin and maybe borrow some if
its features

So I'm asking you to vote on *keeping* this .kts file, and actually
migrating the build incrementally. If you see Kotlin as a threat, I'd
understand but would be disappointed.

Thanks,

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