On Wed, Mar 3, 2010 at 9:35 PM, Rehno Lindeque wrote:

On Wed, Mar 3, 2010 at 9:19 PM, Daniel Fischer wrote:

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Am Mittwoch 03 März 2010 19:57:13 schrieb Rehno Lindeque:

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I'm sorry because this is a very elementary question but despite my attempts I can't seem to get cabal working for my project structure.

I have two main source directories:   src\haskell   src\semanticdb

Inside src\haskell I have main.hs with the module Main. Inside src\semanticdb I have semanticdb.hs with module OSIX.SemanticDB

module OSIX.SemanticDB

must be in the file 'SemanticDB.hs' (or .lhs), in the subdirectory OSIX of the source directory listed in the .cabal file, here src/semanticdb, so

Thanks, moving the file to src/semanticdb/OSIX works. However, I would prefer it if restructuring my directories weren't necessary. Is it possible?

Perhaps I should add that the project isn't haskell-only and already has some conventions in place such as using lower case for directories etc. Thus I prefer not to change these. Compilation worked with the current directory structure using a makefile but I can't duplicate the feat with cabal. Is there a work-around perhaps? Also, the 'executable' part and 'cabal configure' is correct, yes :)

On Wed, Mar 3, 2010 at 9:59 PM, Daniel Fischer wrote:

Am Mittwoch 03 März 2010 20:35:41 schrieb Rehno Lindeque:

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Thanks, moving the file to src/semanticdb/OSIX works. However, I would prefer it if restructuring my directories weren't necessary. Is it possible?

No, the hierarchical module names map directly to the directory structure, module A.B.C must be in the file C.[l]hs in the directory A/B, viewed from the root of the source tree (the directory you name in hs-source-dirs).

Right, thank you. Then perhaps I will try and separate the SemanticDB into a separate cabal project and try to add it as a dependency. Thanks for the help.

On Thu, Mar 4, 2010 at 7:11 PM, Daniel Fischer wrote:

Am Mittwoch 03 März 2010 21:08:07 schrieb Rehno Lindeque:

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On Wed, Mar 3, 2010 at 9:59 PM, Daniel Fischer wrote:

...

Am Mittwoch 03 März 2010 20:35:41 schrieb Rehno Lindeque:

...

Thanks, moving the file to src/semanticdb/OSIX works. However, I would prefer it if restructuring my directories weren't necessary. Is it possible?

No, the hierarchical module names map directly to the directory structure, module A.B.C must be in the file C.[l]hs in the directory A/B, viewed from the root of the source tree (the directory you name in hs-source-dirs).

Ah, actually I misremembered, according to

http://hackage.haskell.org/trac/haskell- prime/wiki/DottedHierarchicalModules

you can also have the file with dots in the filename.

Mmm, I tried it out but it doesn't seem to work for me. I found this extensions support matrix on http://hackage.haskell.org/trac/haskell-prime/wiki/HaskellExtensions that indicates that GHC doesn't support DottedHierarchicalModules. It appears to be a JHC extension...