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# Pinning dependencies
Hypothesmith pins *all* our dependencies for testing, and disables installation
of any unlisted dependencies to make sure the set of pins is complete.
How does this work?
1. `setup.py` lists all our top-level dependencies for the library,
and *also* lists the development and test-time dependencies.
2. `pip-compile` calculates all the transitive dependencies we need,
with exact version pins. We use `tox -e deps` to make this more
convenient, and don't bother pinning `pip-tools` as it's always
run manually (never in CI).
3. `tox` then installs from the files full of pinned versions here!
That's it - a simple implementation but it stabilises the whole dependency
chain and really improves visibility :-)
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