packages feed

hackport-0.6.3: cabal/cabal-testsuite/PackageTests/CustomDep/sandbox.out

# cabal v1-sandbox init
Writing a default package environment file to <ROOT>/sandbox.dist/cabal.sandbox.config
Creating a new sandbox at <ROOT>/sandbox.dist/sandbox
# cabal v1-sandbox add-source
# cabal v1-sandbox add-source