Add `without`, `start_with`, and `end_with` to allow basic control over
the order that resources are installed so that the situations where we
have to split up `virtualenv_install_with_resources` is reduced.
Co-authored-by: Kevin <apainintheneck@gmail.com>
Co-authored-by: Mike McQuaid <mike@mikemcquaid.com>
Signed-off-by: Michael Cho <michael@michaelcho.dev>
A user may wish to use two use two brew-installed Python packages
together. For example, one might want to `import numpy` when using
`jupyterlab` or `ptpython`.
Currently, the only ways to do this I'm aware of is with some hacking of
`PYTHONPATH` or the creation of `.pth` files in a formula's prefix.
A better solution is to allow the virtualenvs that `brew` creates to
have access to system site-packages by default, so that `import numpy`
inside `ptpython` or `jupyterlab` just works.
Partially resolvesHomebrew/homebrew-core#76950.
