On Wed, 2009-04-22 at 11:52 +0100, Neil Mitchell wrote:
How come it's picking up a different haddock? Is that an error with the findExecutable, or is it deliberately trying to pick a newer version?
It's not looking for a newer version. It's looking for the first version that is on the Windows %PATH% env var.
I've got a haddock in C:\Program Files\Haskell\bin and another in C:\ghc\ghc-6.10.2\bin (and probably 6.8.3 as well). Is Cabal searching the path in the right order?
For the record: it turns out that the answer is no. This is because the Win32 SearchPath function doesn't just search the %PATH%, it searches the directory containing the .exe of the currently running process, the current directory, the windows and system directories and finally it searches the %PATH%. So in this example, the cabal.exe program is in C:\Program Files\Haskell \bin and so Windows looks there first for haddock.exe despite the fact that C:\ghc\ghc-6.10.2\bin is earlier on the %PATH%. The workaround therefore is to get rid of a duplicate haddock or to specify the one to use explicitly. The ticket for a nicer solution is http://hackage.haskell.org/trac/hackage/ticket/546 Duncan