[PATCH] Do not try other alternatives if installing default version is enough

[Ansgar Burchardt]

When we encounter

  Build-Depends: pkg-a (>= 2) | pkg-b (>= 3)

and a lower version of pkg-a is already installed (or provided by
another package), sbuild would try to upgrade pkg-b as well.

This patch changes the behaviour of sbuild to not try satisfying
alternative dependencies if the dependency can be satisfied by
installing the default version.

Bug-Debian: http://bugs.debian.org/586275
Signed-off-by: Ansgar Burchardt <ansgar at 43-1.org>
---
 lib/Sbuild/InternalBuildDepSatisfier.pm |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/lib/Sbuild/InternalBuildDepSatisfier.pm b/lib/Sbuild/InternalBuildDepSatisfier.pm
index 335a03c..49f8e95 100644
--- a/lib/Sbuild/InternalBuildDepSatisfier.pm
+++ b/lib/Sbuild/InternalBuildDepSatisfier.pm
@@ -281,6 +281,8 @@ sub filter_dependencies {
 		    return 0;
 		} else {
 		    $builder->log("Using default version " . $policy->{$name}->{defversion} . "\n");
+		    $upgradeable = $name if !$upgradeable;
+		    last;
 		}
 		$upgradeable = $name if !$upgradeable;
 	    }
-- 
1.7.1


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