Ok, I just made a branch, basically only changing that single line in
java.scm.
It's base on current core-updates.

You can clone from: https://github.com/Boskovits/guix.git
branch: change-default-icedtea-8.

How do we know where you need further assistance with that?

As first step it is not needed to remove #:jdk icedtea-8 references,
because I think that simply becomes a noop. Am I right here?
That can be done as the last step before merging, I guess.

2017-11-24 11:15 GMT+01:00 Ricardo Wurmus <rekado@elephly.net>:

>
> Hi Gábor,
>
> > I guess we could just flip that to icedtea-8, and check what still works.
> > That would flip the version in the build system also, as it uses
> "icedtea".
>
> Exactly.  The call for help is really about dealing with the fallout
> from this change.  I’ve attempted this some time ago when we still had
> a much smaller set of Java packages, but it’s too much to check all of
> the packages by myself.
>
> > Should I check which packages are affected in advance, or just go with
> the
> > build and see what does not work?
>
> For some packages it’s feasible to do this immediately before pushing.
> It’s also good to review the weird hacks that were sometimes necessary,
> and check if they are still needed.
>
> We also need to confirm that the generated build.xml files have the
> appropriate “source” and “target” version specifiers.
>
> But mostly we can just change the default “icedtea” and remove “#:jdk
> ,icedtea-8” from all packages.  I’d like to avoid having to add “#:jdk
> ,icedtea-7” to any of the packages; finding fixes would be preferrable.
>
> --
> Ricardo
>
> GPG: BCA6 89B6 3655 3801 C3C6  2150 197A 5888 235F ACAC
> https://elephly.net
>
>
>