patch applied (cabal-install): Improve the error handling and error message for missing repo index files

[Duncan Coutts]

Fri Aug 22 15:59:16 PDT 2008  Duncan Coutts <duncan at haskell.org>
  * Improve the error handling and error message for missing repo index files

    M ./Distribution/Client/IndexUtils.hs -11 +18

View patch online:
http://darcs.haskell.org/cabal-install/_darcs/patches/20080822225916-adfee-79d667a7fca2bcaaec3c88e339c98ddca2bb9def.gz