packages feed

cabal-buck2-0.1.0.0: test/fixtures/missing-module/.buckconfig

# Placeholder: this test only checks `cabal buck2`'s generated files, it
# never actually invokes a real buck2 binary, so this doesn't need to be
# a functional buck2 config - it only needs to exist so that
# `ensureBuckconfigAndPackage` sees it's already there and leaves it alone.