Subject: Re: [bug#37434] [PATCH 1/2] gnu: ghc-megaparsec: Update to 7.0.5.

From: Timothy Sample <[email-masked]>
Date: Fri, 20 Sep 2019 18:21:14 -0400

Hi Ludo and Eric,

Ludovic Courtès <[email-masked]> writes:

> [email-masked] skribis:
>
>> From: Eric Bavier <[email-masked]>
>>
>> * gnu/packages/haskell.scm (ghc-megaparsec): Update to 7.0.5
>> [arguments]: Remove field.
>
> Since <https://www.stackage.org/lts-14.6> lists megaparsec 7.0.5, I
> think this is OK.  Am I right, Timothy?

No!  :)

Stackage LTS 14 targets GHC 8.6, which we are not (yet) using for
Haskell builds.  We still use GHC 8.4, so we follow Stackage LTS 12
(<https://www.stackage.org/lts-12>), which lists megaparsec at 1.0.0.

-- Tim