RFD: deprecate permissions-related stuff in System.Directory

Malcolm Wallace Malcolm.Wallace at cs.york.ac.uk
Wed Aug 29 08:55:46 EDT 2007

Simon Marlow <simonmarhaskell at gmail.com> wrote some fairly convincing
arguments against the universal use of get/setPermissions:

> These functions are hardly ever used.
> There are a few more uses of `getPermissions`, but as pointed out
> above,  these are usually flawed.  In any case they can usually be
> replaced by  openFile.

I have a perfectly OK use of getPermissions: in hmake, there is a
routine that scans the PATH variable looking for an executable with a
given name.  Basically, it is a Haskell implementation of the unix
'which' command.  There is no actual use of the executable, just a test
to report/reject the candidate pathname.


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