public static IPackageInfo Find(this ILookup<string, IPackageInfo> packages, PackageDependency dependency)
{
if (!packages.Contains(dependency.Name))
return null;
var allMatchingPackages = from package in packages[dependency.Name]
where package.Version != null && dependency.IsFulfilledBy(package.Version)
orderby package.Version descending
select package;
// only remove nuked versions if it's not an exact match
var bestMatching = allMatchingPackages.FirstOrDefault();
if (bestMatching != null)
{
if (dependency.IsExactlyFulfilledBy(bestMatching.Version))
return bestMatching;
}
// remove any nuked versions before returning the best match
return (from package in allMatchingPackages
where !package.Nuked
select package).FirstOrDefault();
}