private IEnumerable <FilePath> FilterCompatibleAssemblies(
IEnumerable <FilePath> assemblies, DirectoryPath packageDirectory)
{
var targetFramework = _environment.GetTargetFramework();
// standardize assembly paths as relative to package directory
var standardizedAssemblyPaths =
assemblies.Select(a => a.IsRelative ? a : a.FullPath.Substring(packageDirectory.FullPath.Length + 1))
.ToArray();
var compatibleAssemblyPaths =
_assemblyCompatibilityFilter.FilterCompatibleAssemblies(targetFramework, standardizedAssemblyPaths);
// return as absolute paths
return(compatibleAssemblyPaths
.Select(cp => cp.MakeAbsolute(packageDirectory)));
}