[GHC] #8248: GHCi should not warn if group writable

[GHC]

#8248: GHCi should not warn if group writable
----------------------------+----------------------------------------------
       Reporter:  afcowie   |             Owner:
           Type:  bug       |            Status:  new
       Priority:  normal    |         Milestone:
      Component:  GHCi      |           Version:  7.6.3
       Keywords:            |  Operating System:  Linux
   Architecture:            |   Type of failure:  GHC rejects valid program
  Unknown/Multiple          |         Test Case:
     Difficulty:  Unknown   |          Blocking:
     Blocked By:            |
Related Tickets:            |
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 Any number of Linux distros support the idea of user groups, whereby when
 a new user is created there is also simultaneously a group created with
 the same name; ie, instead of

 {{{
 -rw-r--r--.  1 andrew users    19 Sep  5 08:29 ghci.conf
 }}}

 as us old traditionalists would have it, you get

 {{{
 -rw-rw-r--.  1 andrew andrew   19 Sep  5 08:29 ghci.conf
 }}}

 because the umask in such cases is 0002 instead of 0022.

 There is entirely nothing unusual or incorrect about this approach, and it
 is followed, for example, in the Fedora family of distros.

 GHC, however, is being a bit silly in emitting the following:

 {{{
 $ ghci
 GHCi, version 7.6.3: http://www.haskell.org/ghc/  :? for help
 Loading package ghc-prim ... linking ... done.
 Loading package integer-gmp ... linking ... done.
 Loading package base ... linking ... done.
 *** WARNING: /home/andrew/.ghc/ghci.conf is writable by someone else,
 IGNORING!
 Prelude>
 }}}

 Foremost the fact that the file is group writable is not a problem and the
 user's choice, //particularly// in this case because it's group writable
 in the user's group! Regardless of that, GHCi should not be ignoring files
 with other than 0644 permissions; this isn't `.ssh/`.

 Can this check and attendant behaviour be removed?

 AfC

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8248>
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