[GHC] #15667: Readonly permissions bits are wrong

[GHC]

#15667: Readonly permissions bits are wrong
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        Reporter:  Phyx-             |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.6.1
       Component:  Compiler          |              Version:  8.4.3
      Resolution:                    |             Keywords:
Operating System:  Windows           |         Architecture:
 Type of failure:  GHC doesn't work  |  Unknown/Multiple
  at all                             |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Krzysztof Gogolewski <krz.gogolewski@…>):

 In [changeset:"deceb21b7ec64ae60377addc2679692ca500b6ae/ghc" deceb21/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="deceb21b7ec64ae60377addc2679692ca500b6ae"
 Drop accidental write-attributes request

 Summary:
 The new filesystem code accidentally asks for write attributes
 permissions when doing read-only access.

 I believe this is what's causing the GHC 8.6.1 tarballs to fail
 when installed to a privileged location.
 I haven't been able to reproduce the issue yet, but this permission
 bit is wrong anyway.

 Test Plan: I'm still trying to workout how to test that this works,
 changing the permissions on the folder doesn't seem to reproduce
 the error on a tarball I made from before the change.

 Reviewers: bgamari, tdammers

 Reviewed By: bgamari

 Subscribers: tdammers, monoidal, rwbarton, carter

 GHC Trac Issues: #15667

 Differential Revision: https://phabricator.haskell.org/D5177
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15667#comment:1>
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