See the discussion at
<https://lists.gnu.org/archive/html/guix-devel/2018-10/msg00250.html>.
* guix/build/java-utils.scm (package-name-version): Remove it.
(install-javadoc): Use 'strip-store-file-name' instead of
'package-name-version'.
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
* guix/build/java-utils.scm: New file.
* guix/build-system/ant.scm: Use it.
* Makefile.am (MODULES): Add it.
Co-authored-by: Ricardo Wurmus <rekado@elephly.net>