bug#73599: packages from store paths don't propagate propagated-inputs

[Tobias Geerinckx-Rice]

Hi [explicitly CC'ing Ludo', I hope that's OK],

I don't think

  guix install $(guix build foo)

is, or is expected to be, a supported way to install packages?  Packages have 
more metadata attached to them than store items.  I don't think that 
propagation is recorded in the Nix database.  Nor do I think it should be just 
to support this hack.

The manual doesn't explicitly say that it's semi-supported, which could be 
improved, but I think it's quietly understood...

It happens to work most of the time, it can be nice to have (I install most 
firefox versions this way), we won't deliberately break the way it happens to 
work, but it's not a synonym of

  guix install foo

Kind regards,

T G-R

Sent on the go.  Excuse or enjoy my brevity.