From: Jakub Jirutka <jakub@jirutka.cz>
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Subject: [alpine-devel] Metapackages for Java JDK and JRE
Message-Id: <9B0B6440-193B-48EA-B1AE-26EDCC10B80E@jirutka.cz>
Date: Mon, 2 May 2016 01:37:18 +0200
To: alpine-devel@lists.alpinelinux.org
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Hi,

I=92ve opened a pull request [1] with patch [2] that introduces =
metapackages for Java JDK and JRE: java-jdk, java-jre, and java-jre-base =
(headless).

This patch will allow packages to depend on _any_ JDK or JRE, without =
specifying exact version (7, or 8) or implementation/vendor (OpenJDK). =
In this case, the latest OpenJDK is installed. If any JRE/JDK is already =
installed on the system, then it will satisfy the JDK/JRE requirement =
(thanks to the directive `provides`).

OpenJDK 7 is not publicly supported by upstream anymore (but we need it =
to build OpenJDK 8), so it may seem that this change is unnecessary =
since we have just one truly supported version. Well, for *now*; OpenJDK =
9 comes in a year and nightly builds are already available.

Moreover, the sad reality is, that some ~~sh*tty~~ enterprise software =
still doesn=92t work on JRE/JDK 8, so openjdk7 is not used just for =
building openjdk8 among Alpine users. Also some people want to install =
Oracle JDK on Alpine, for whatever absurd reason (like some =93security =
certificates=94). I=92m not for adding Oracle JDK to Alpine (for many =
reasons), but why not to allow people using their own JDK abuild with =
any Alpine packages depending on any JDK/JRE? Lastly, there are also =
many other Java VM implementations [3]; that=92s why I named it java-* =
and not openjdk-*.

I had already briefly discussed it with ncopa few months ago, he guided =
me to the direction of metapackages (already used for lua, gtk+, =85) =
and `provides`. I hope that I understood it correctly. :)

Do you have some comments, suggestions, =85 on this?

Jakub J.

[1]: https://github.com/alpinelinux/aports/pull/66
[2]: https://github.com/alpinelinux/aports/pull/66.patch
[3]: https://en.wikipedia.org/wiki/List_of_Java_virtual_machines=

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