Actually I did forget to check if it is used runtime.
It is used to build and OSGi bundle.
At first I tried to fake the dependency like for the ant tasks,
but I got compilation errors.

2018-01-19 7:35 GMT+01:00 Chris Marusich <cmmarusich@gmail.com>:
Gábor Boskovits <boskovits@gmail.com> writes:

> +    (inputs
> +     `(("java-aqute-bndlib" ,java-aqute-bndlib)
> +       ("java-aqute-libg" ,java-aqute-libg)))
>      (arguments
>       `(#:build-target "compile"
>         ;; The tests require an old version of Janino, which no longer compiles
> @@ -2679,7 +2682,9 @@ archives (jar).")
>         #:tests? #f
>         ;; We don't need these extra ant tasks, but the build system asks us to
>         ;; provide a path anyway.
> -       #:make-flags (list (string-append "-Dobjectweb.ant.tasks.path=foo"))
> +       #:make-flags (list (string-append "-Dobjectweb.ant.tasks.path=foo")
> +                          (string-append "-Dbiz.aQute.bnd.path="
> +                                         (assoc-ref %build-inputs "java-aqute-bndlib")))

Even though we added some inputs, there appear to be no retained
references in the output, as shown by this command:

  guix gc --referrers $(./pre-inst-env guix build java-asm)

Is this expected?  At first blush, this seems reasonable only if
java-aqute-bndlib and java-aqute-libg are not required at runtime.
Perhaps Ricardo knows more, since he has more experience working with
the ant-build-system.

--
Chris