Re: guix gc: smarter collection & guix.el manual deletion

[Pierre Neidhardt]

Thanks for mentioning this.  I'm very confused by the documentation however:

--8<---------------cut here---------------start------------->8---
‘--gc-keep-outputs[=yes|no]’
     Tell whether the garbage collector (GC) must keep outputs of live
     derivations.

     When set to “yes”, the GC will keep the outputs of any live
     derivation available in the store—the ‘.drv’ files.  The default is
     “no”, meaning that derivation outputs are kept only if they are GC
     roots.  *Note Invoking guix gc::, for more on GC roots.
--8<---------------cut here---------------end--------------->8---

Specifically this: "derivation outputs are kept only if they are GC roots'".
Would that mean that other live outputs are deleted?!?  I must get this wrong! 
:p

That said, I think my `guix-store.el' suggestion still has the following 
benefit: 
whenever there is a huge build-input in the store for an item that is only
seldom rebuilt, it allows the users to chose for themselves if it's OK to delete
it.

-- 
Pierre Neidhardt

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