+-- read the package.cache file strictly, to work around a problem with
+-- bytestring 0.9.0.x (fixed in 0.9.1.x) where the file wasn't closed
+-- after it has been completely read, leading to a sharing violation
+-- later.
+myReadBinPackageDB :: FilePath -> IO [InstalledPackageInfoString]
+myReadBinPackageDB filepath = do
+ h <- openBinaryFile filepath ReadMode
+ sz <- hFileSize h
+ b <- B.hGet h (fromIntegral sz)
+ hClose h
+ return $ Bin.runGet Bin.get b