projectatomic/rpm-ostree — pull request #41 by cgwalters (2014-10-31 03:52:00+00:00)
Title: treecompose: Replace shell callout for package caching with builtin C

This is taking us closer to deeper integration in the treecompose side
with RPM instead of forking out to things.

It works except...we end up with the dreaded __db.001, .dbenv.lock
files =/ Best option would be to teach RPM how to open a database
really read-only. Failing that, could use the immutable bit?