[Hackage] #718: Behaviour of postCopy and postInstall hook is confusing

[Hackage]

#718: Behaviour of postCopy and postInstall hook is confusing
----------------------------+-----------------------------------------------
  Reporter:  guest          |        Owner:         
      Type:  defect         |       Status:  new    
  Priority:  normal         |    Milestone:         
 Component:  Cabal library  |      Version:  1.8.0.2
  Severity:  normal         |     Keywords:         
Difficulty:  unknown        |   Ghcversion:         
  Platform:                 |  
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 While working on the Bluetile cabal package (
 http://hackage.haskell.org/package/bluetile ) I used Cabal's hook system
 to install executables to the libexec directory.

 It took me a while to figure out that the postCopy hook is _the only hook_
 to run when you invoke 'cabal copy' and the postInstall hook is _the only
 hook_ to run when you invoke 'cabal install'.

 This is both confusing and unfortunate.
 Since the Cabal documentation elsewhere states that 'cabal install' is
 just "register + copy" one would assume that upon 'cabal install' the
 postCopy hook runs as well.

 Now I had to write two hooks, both for postCopy and for postInstall, to
 make it work for users that run 'cabal install' as well as cases where
 'cabal copy' is used (for example by distributions, while preparing their
 packages).

 This can probably not be fixed without breaking a bunch of Cabal packages,
 so maybe some kind of warning or big note in the documentation would help
 in the meantime.

 Best regards!
 Jan

-- 
Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/718>
Hackage <http://haskell.org/cabal/>
Hackage: Cabal and related projects