GNU bug report logs - #41451
Haskell packages retain references to bootstrap variants

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Message #8 received at 41451 <at> debbugs.gnu.org (full text, mbox):

From: Ricardo Wurmus <rekado <at> elephly.net>
To: 41451 <at> debbugs.gnu.org
Subject: Re: Haskell packages retain references to bootstrap variants
Date: Mon, 25 May 2020 11:18:19 +0200

Ricardo Wurmus <rekado <at> elephly.net> writes:

> Some Haskell packages have a “-bootstrap” variant to cut dependency
> cycles.  Unfortunately, these bootstrap variants remain in the reference
> graph alongside their non-bootstrap counterparts.

On a related note, Haskell packages retain needless references to *all*
other Haskell packages at build time.  That’s because we *copy* their
.conf files at build time to create a package cache, and these .conf
files thus propagate even to unrelated packages.

We are effectively using propagation via the lib/ghc-8.6.5/<name>.conf.d
directory.

I don’t know if all the files in there are really necessary, but it
seems to me that perhaps this leads to spurious references.

-- 
Ricardo

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