Dear Guix,

I'd like to add Delly.  Note that there's a newer version (0.7.8) out.
We extensively tested 0.7.7 in our research lab.  Building 0.7.8 failed
because the patch for unbundling dependencies no longer applies to this
new version.

So I'd like to add 0.7.7 first, and do more testing/patching on 0.7.8
before we update it in Guix.

Thanks for your time!

Kind regards,
Roel Janssen