On 12-02-02 12:12 AM, Scott Lawrence wrote:
When running cabal install with --extra-lib-dirs=./lib, if a package is found both in ~/.cabal/lib and ./lib, cabal seems to favor the ~/.cabal/lib one. Is there some way to specify the correct precedence to use?
--extra-lib-dirs is for C libs only. Haskell packages for GHC are not rediscovered every time by scanning "lib" directories. They are registered in 2 metadata stores (3 if you add an option), and only the metadata stores are consulted. On existence of packages, this is final. The 2 metadata stores also come with a precedence: the "user" store has higher priority than the "global" store. On disambiguation of packages, this is final. http://www.vex.net/~trebla/haskell/sicp.xhtml#ident