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From: Markus Koschany <apo@debian.org>
Newsgroups: linux.debian.maint.java
Subject: Re: Help With Gradle-plugin-protobuf Update
Date: Sat, 09 Jul 2022 12:50:01 +0200
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Hi Sonnie,

Am Freitag, dem 08.07.2022 um 20:35 +0100 schrieb Nkwuda Sunday Cletus:
> Hi there.
>=20
> I am a GSOC intern currently working with Debian Android-tools-team to=
=20
> package and update Android sdk tools in Debian.
>=20
> Currently I am attempting to package bundletool (=20
> https://github.com/google/bundletool=C2=A0), but I am stuck because it=
=20
> depends on a much more recent version of gradle-plugin-protobuf. I=20
> attempted to update gradle-plugin-protobuf but couldn't. Please your=20
> help will be very appreciated.
>=20
> Find the details of my attempt and findings here:=20
> https://salsa.debian.org/android-tools-team/admin/-/issues/51

I am currently working on a full Gradle update which includes some of the
artifacts like the kotlin-dsl-plugin and should enable us to package a newe=
r
version of gradle-plugin-protobuf in the near future. However one of my
findings is that we should try hard to avoid pulling in even more Gradle
plugins or Gradle related dependencies. I don't think Gradle will ever be a
build system that fits into the Debian ecosystem and the more we make other
packages dependent on it the more problems we will face in the future.

Hence why I suggest you take a different path. A few months ago I have pack=
aged
a new version of libthrift-java which you could use as a template for your =
own
project. [1]

libthrift-java usually requires Gradle as well. I simplified the packaging =
by
using our Debian standard tools javahelper and maven-repo-helper.

This should work for bundletool too. Looking at

https://github.com/google/bundletool/blob/master/build.gradle

we should have all the dependencies in Debian already, except of maybe
com.android:zipflinger and com.google.dagger.

Ignore all tests and test dependencies. Just use the src/main directory as =
your
upstream sources (and additionally archive/com/google/android/archive if th=
is
is required for your project) and try to compile the Java code with jh_buil=
d
first. Add all the required dependencies to your CLASSPATH and you should g=
et a
preliminary jar file.=C2=A0

For the code in src/main/proto you will need the protobuf-compiler package
(already in Debian) and possibly libprotobuf2-java (also in Debian but an o=
lder
version). gradle-plugin-protobuf is just a wrapper around these tools. It
should be possible to do all this by hand in debian/rules when you call the
protoc command from protobuf-compiler. If you succeed you would get rid of
Gradle completely and dramatically simplify the packaging process for futur=
e
contributors.

If you have more questions, please feel free to ask on this list.

Regards,

Markus


[1] https://tracker.debian.org/pkg/libthrift-java


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