[commit: Cabal] master: Improve 'cabal info pkg' message when there is nothing to install (9076143)

[Ian Lynagh]

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

On branch  : master

http://hackage.haskell.org/trac/ghc/changeset/9076143a0fddaaf36cd0e7251b5441bdeb73247e

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

commit 9076143a0fddaaf36cd0e7251b5441bdeb73247e
Author: Duncan Coutts <duncan at haskell.org>
Date:   Tue Dec 18 00:47:24 2007 +0000

    Improve 'cabal info pkg' message when there is nothing to install
      "All requested packages already installed. Nothing to do."
    rather than:
      "These packages would be installed:\n"
    followed by ... nothing.

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

 cabal-install/Hackage/Info.hs |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/cabal-install/Hackage/Info.hs b/cabal-install/Hackage/Info.hs
index 50cda30..9e66538 100644
--- a/cabal-install/Hackage/Info.hs
+++ b/cabal-install/Hackage/Info.hs
@@ -36,6 +36,9 @@ info cfg comp conf deps
                 "The requested packages cannot be installed, because of missing dependencies:\n"
              ++ showDependencies missing
 
+           Right [] -> notice verbosity $
+                "All requested packages already installed. Nothing to do."
+
            Right pkgs -> notice verbosity $
                "These packages would be installed:\n"
              ++ unlines [showPackageId (pkgInfoId pkg) | (pkg,_) <- pkgs]