[commit: Cabal] master: add message to 'package not found' error advising to run 'cabal update'. (#497) (9a9b519)

[Ian Lynagh]

Repository : ssh://darcs.haskell.org//srv/darcs/packages/Cabal

On branch  : master

http://hackage.haskell.org/trac/ghc/changeset/9a9b519c368ceb0ebd63b52efef4abc5f13f6301

>---------------------------------------------------------------

commit 9a9b519c368ceb0ebd63b52efef4abc5f13f6301
Author: Brent Yorgey <byorgey at cis.upenn.edu>
Date:   Thu Jun 11 17:12:33 2009 +0000

    add message to 'package not found' error advising to run 'cabal update'. (#497)

>---------------------------------------------------------------

 cabal-install/Distribution/Client/IndexUtils.hs |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/cabal-install/Distribution/Client/IndexUtils.hs b/cabal-install/Distribution/Client/IndexUtils.hs
index bcc0651..1110e87 100644
--- a/cabal-install/Distribution/Client/IndexUtils.hs
+++ b/cabal-install/Distribution/Client/IndexUtils.hs
@@ -234,7 +234,8 @@ disambiguateDependencies index deps = do
              (_, Left name)) <- zip deps names ]
         ambigious -> die $ unlines
           [ if null matches
-              then "There is no package named " ++ display name
+              then "There is no package named " ++ display name ++ ". "
+                ++ "Perhaps you need to run 'cabal update' first?"
               else "The package name " ++ display name ++ "is ambigious. "
                 ++ "It could be: " ++ intercalate ", " (map display matches)
           | (name, matches) <- ambigious ]