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Subject: [bug#39309] [PATCH WIP] gnu: add stack.
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From: Timothy Sample <samplet@ngyro.com>
References: <D5873825-B949-47F6-B9AC-5E1722DA028D@asu.edu>
 <CAKf5CqXUOyvDgCG8e9oGxhBxwpC-9sKi3y8RJUfgjXi5s+c+1A@mail.gmail.com>
Date: Mon, 10 Feb 2020 01:06:57 -0500
In-Reply-To: <CAKf5CqXUOyvDgCG8e9oGxhBxwpC-9sKi3y8RJUfgjXi5s+c+1A@mail.gmail.com>
 (John Soo's message of "Fri, 7 Feb 2020 17:32:54 +0000")
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To: John Soo <jsoo1@asu.edu>
Cc: 39309@debbugs.gnu.org

Hi John,

John Soo <jsoo1@asu.edu> writes:

> Just wanted to CC you because this issue is hard to find thanks to my
> mistaken subject line.

This seems to be due to <https://github.com/haskell/hsc2hs/issues/22>.

Briefly, the =E2=80=9Chsc2hs=E2=80=9D program bundled with GHC 8.6.5 accept=
s response
files, but then goes ahead and passes arguments directly to GCC.  Newer
versions of =E2=80=9Chsc2hs=E2=80=9D use response files for GCC, which solv=
es the
=E2=80=9CArgument list too long=E2=80=9D problem.

My first suggestion would be to make a separate package for =E2=80=9Chsc2hs=
=E2=80=9D
using the version listed on Stackage (which is 0.68.6).  Then, add it as
a native input to the =E2=80=9Cstack=E2=80=9D package and get it to shadow =
the version
shipped with GHC.

Failing that, we could consider patching our GHC package.  It would be
best to avoid that, though!  :)

(Also, there=E2=80=99s a duplicate =E2=80=9Cghc-hspec-discover=E2=80=9D in =
the patch set.  That
is, we already have an =E2=80=9Chspec-discover=E2=80=9D package.)


-- Tim