Good idea!

But can we do even shorter?

- Move the graft information which is somewhat low-level to --verbose=N.
- Remove the duplicate profile information ("The following
  derivation..." and "building "/gnu...-profile.drv").
- If we move the URL to --verbose=N, why not doing the same for the store full path?

Result:

--8<---------------cut here---------------start------------->8---
$ guix install zile-on-guile vim-full
The following packages will be installed:
   zile-on-guile 2.4.14-0.fd09781
   vim-full      8.2.0411

9.4 MB will be downloaded:
 vim-full-8.2.0411  8.9MiB                 7.6MiB/s 00:01 [##################] 100.0%
 zile-on-guile-2.4.14-0.fd09781  140KiB    1.8MiB/s 00:00 [##################] 100.0%

building /gnu/store/d9xms78917w67xq71pqsx5x9s6dmq6d7-profile.drv...
--8<---------------cut here---------------end--------------->8---

Thoughts?

-- 
Pierre Neidhardt
https://ambrevar.xyz/