shim layering #313

Job	Run time
unavailable	20s
local-edit-tests	1m 30s
unit-tests	22s
fix-machos.com (linux)	1m 25s
stark.com/foo (linux)	1m 23s
pyapp.com/pip (mac)	1m 16s
toolchain.com (mac)	35s
version-transformer.com (linux)	1m 22s
pc-cmake.com (linux)	1m 23s
pyapp.com/pip (linux)	1m 30s
stark.com/foo@1.2.3 (linux)	1m 24s
toolchain.com (linux)	1m 22s
stark.com/foo (mac)	52s
pyapp.com/poetry (mac)	1m 5s
git-clone.com (linux)	1m 21s
pyapp.com/poetry (linux)	1m 36s
fix-machos.com (mac)	40s
version-transformer.com (mac)	40s
stark.com/foo@1.2.3 (mac)	1m 7s
git-clone.com (mac)	26s
pc-cmake.com (mac)	29s
	22m 8s

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