feat(usePantry): Add support for multiple dists in `distributable`. #293

Job	Run time
unit-tests	22s
typecheck	22s
integration-tests (zlib.net)	51s
integration-tests (openssl.org^1.1 curl.se/ca-certs)	8m 19s
integration-tests (pipenv.pypa.io)	3m 2s
integration-tests (poppler.freedesktop.org/poppler-data)	1m 13s
integration-tests (catb.org/wumpus)	58s
integration-tests (c-ares.org)	7m 12s
integration-tests (vim.org)	9m 8s
integration-tests (curl.se)	27m 48s
	59m 15s

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