I have attached a working patch to successfully build Hyperbole in 
Guix 1.0.1.

The notable changes are in the patch files my patch adds:
- The definition of hyperbole-toggle-messaging is moved to 
  hsettings.el, which seems to be the only place in the Hyperbole 
  repo where that function is called.  This avoids the build error 
  I initially reported.
- hyperb:check-dir-user fails during Guix's build process;  for 
  now, I have simply removed that check from the initialization 
  steps.

Now that Hyperbole is successfully building, I will start using it 
and report any bugs I encounter here.  Are there specific 
ramifications to either of these changes that you would recommend 
I look for?

--
Joseph LaFreniere