The default jdk was updated, but various applications were kept at
jdk8 so they could be updated one-by-one, testing that the update
does not break those packages.
I tested sweethome3d, and found out that while it runs fine with
the default jre, the build script of the current release does not
work on JDK9 or higher. This has already been fixed on trunk but
not yet released. Since this is specific to this package, I
moved the selection of 'jdk8' to inside the packages' .nix, with a
note so we don't forget to update to the default jdk as well when
a new version of sweethome3d is released.
Because:
* `go-bootstrap` is a native build input of go, so it needs to have
an offset of -1. Otherwise, e.g. when building a go cross-compiler,
it will try to make go-bootstrap a cross-compiler too.
* have to specify `buildPackages` for the `stdenv` override, otherwise
`buildPackages.stdenv` will be the same as `pkgs.gcc8Stdenv`.
Update Claws Mail to its latest version and perform a major refactoring.
Previously, the configurable arguments were neither complete nor named
according to the configure.ac file. Likewise, the values did not
correspond to the defaults, but rather to a personal preference.
This has now been changed to enable the arguments which are enabled in
the configure.ac file. Also the variable names have been adjusted. For
compatibility the old parameters also exist.
Next to the claws-mail package is the "experimental" claws-mail-gtk3
package for the non official gtk3 git branch. This package started as an
almost one-to-one copy of the claws-mail derivation which small
modifications. This package was of course not updated.
This has also been changed so that both packages are built from the same
derivative.
