Hi.
I have started to use Cabal for a small project where I have to build
several executables.
The project layout is something like this:
/
bin/
a.hs
b.hs
src/
X.hs
Y.hs
The Cabal configuration file is something like:
executable a
build-depends: haskell98, base, ...
main-is: a.hs
hs-source-dirs: src bin
other-modules: X
This is perfectly reasonable, but it is odd, IMHO.
I don't understand why `main-is` is relative to `hs-source-dirs`.
What is the rationale?
After all, there is only one executable that can be specified in the
`executable` block.
The configuration file should be, instead (IMHO, of course):
executable a
build-depends: haskell98, base, ...
main-is: bin/a.hs
hs-source-dirs: src
other-modules: X
Another "problem" I have noted, is that if I specify `main-is` field two
times, no error is reported.
Simply, Cabal uses the last directive.
One last thing: is it possible to define "macros" in Cabal?
In my package, I have n executables, that have many dependencies in common.
I would like to avoid having to repeat the same dependencies for each
executable block.
Thanks Manlio Perillo
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