bug#31836: Installing bc downloads ghc

[Caleb Ristvedt <caleb.ristvedt@cune.org>]

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I believe so. I think it's just ghc installed, though. Curiously enough, it
also went on to download mesa. Probably a similar mechanism at work there.

The only mention of hooks I see in the manual, though, is referring to the
daemon's build hook used for offloading. From what I see, though, I'd
assume that they are probably run in a way that errs on the side of "better
to run when unnecessary than not run when necessary".

This seems like a fairly common experience - "I ran foo and then it did
WHAT?". "guix graph" is really useful, but the parts that it can't explain,
it'd be nice to have documented. Where can I read more about these profile
hooks, that I may pursue this?

On Fri, Jun 15, 2018 at 6:27 AM, Ricardo Wurmus <
ricardo.wurmus@mdc-berlin.de> wrote:

>
> Hi Caleb,
>
> > Pretty much what the title says. I tried installing bc and it downloaded
> > ghc, among other things. I was curious how this came to be, so I ran […]
>
> I cannot reproduce this.
>
> Do you have other Haskell packages in your profile?  This may be caused
> by the profile hook that is executed when building a new profile
> generation containing Haskell packages.
>
> --
> Ricardo
>

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