[darcs-devel] [patch2057] remove all MonadFail instances in darcs lib

[Ben Franksen]

New submission from Ben Franksen <ben.franksen at online.de>:

Following up on review of patch2017.

1 patch for repository http://darcs.net/screened:

patch 368451e02778df65951b7f8a024c2564e71426f7
Author: Ben Franksen <ben.franksen at online.de>
Date:   Sun Jul 19 16:35:54 CEST 2020
  * remove all MonadFail instances in darcs lib
  
  The ones for the Perhaps type in the Prim.V1 and RepoPatchV1 implementations
  were not used. The one for hopefullyM was also unneeded, in fact it turns
  out that we only ever use it in the Maybe monad, so we change it to return
  Maybe, simplifying the implementation as well.

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files: patch-preview.txt, remove-all-monadfail-instances-in-darcs-lib.dpatch, unnamed
messages: 22195
nosy: bf
status: needs-screening
title: remove all MonadFail instances in darcs lib

__________________________________
Darcs bug tracker <bugs at darcs.net>
<http://bugs.darcs.net/patch2057>
__________________________________
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