On Thu, Jan 18, 2018 at 10:35:34PM -0800, Chris Marusich wrote:
> 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)

To check the retained references in the output [0], it's actually `guix
gc --references $(./pre-inst-env guix build ...)`.

[0] To clarify "retained references", they are literally occurences of
strings that begin with '/gnu/store/', then a Guix hash, then a hyphen,
and then a package name.