Map package names and versions to files on disk.
This expects the there to be a pair of files on disk like "vim-2.7.rpm"
(which contains the actual package data) and "vim-2.7.rpm.sha1" which
contains the SHA1 hash of the package
Linear Supertypes
(String) ⇒ Either[String, (File, Checksum)], AnyRef, Any
Map package names and versions to files on disk. This expects the there to be a pair of files on disk like "vim-2.7.rpm" (which contains the actual package data) and "vim-2.7.rpm.sha1" which contains the SHA1 hash of the package