How to package OpenJDK 11 / OpenJFX 11 desktop application?

[rednoah]

I’m trying to use snapcraft to package a Java 11 desktop application. It works fine on Ubuntu Cosmic because I can install openjdk-11-jre and openjfx via apt.

But since snapcraft is using the xenial repository, I can’t build a snap, because The package 'openjdk-11-jre' was not found.

Is there a way to build a snap package but using cosmic package repository?

[pachulo]

If you use the new core18 base you should be good to go. More info:

Call for testing: snapcraft 3.0

Hello Snapcrafters! The Snapcraft team is delighted to announce that version 3.0 is now available. Traditionally, the only base that has existed was derived from Ubuntu 16.04 LTS. With the release of Ubuntu 18.04 LTS a new base was created. The current architecture also allows for other bases to exist, such as one derived from Fedora. Building a snap with no base requires developers build on Ubuntu 16.04 LTS; the introduction of bases and build environments in snapcraft 3.0 automatically provis…

And an example of a snap using it:
https://github.com/keepassxreboot/keepassxc/blob/develop/snapcraft.yaml

[rednoah]

Thanks! base: core18 does help with openjdk-11-jre.

Next roadblock is openjfx which is for Java 8 on bionic but Java 11 on cosmic:

Ubuntu – Package Search Results -- openjfx

Is there any way to use cosmic as base? Or to somehow use the cosmic package for this particular package?

[pachulo]

@rednoah

Is there any way to use cosmic as base?

Not that I know.

@rednoah

Or to somehow use the cosmic package for this particular package?

Hmm, that’s a good question and I don’t know for sure, but I would say that an option would be to install the package “manually” during snap creation…