Pradyun Gedam kirjoitti 26.01.2018 klo 17:11:
Hello! I hope everyone's had a great start to 2018! :)
A few months back, while working on pip, I had noticed an oddity about
extras.
Installing a package with extras would not store information about the
fact that the extras were requested. This means, later, it is not
possible to know which extra-based optional dependencies of a package
have to be considered when verifying that the packages are compatible
with each other. This information is relavant for
resolution/validation since without it, it is not possible to know
which the extra-requirements to care about.
As an example, installing ``requests[security]`` and then uninstalling
``PyOpenSSL`` leaves you in a state where you don't really satisfy
what was asked for but there's no way to detect that either.
What here is specific to extras really? "pip uninstall" does not
consider dependencies anyway and will happily let you uninstall whatever
you want, even if it's a dependency of some still installed distribution.
Thus, obviously, I'm interested in making pip to be able to store this
information. As I understand, this is done needs to be specified in a
PEP and/or on PyPUG's specification page.
To that end, here's seeding proposal for the discussion: a new
`extras-requested.txt` file in the .dist-info directory, storing the
extra names in a one-per-line format.
Cheers!
Pradyun
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_______________________________________________
Distutils-SIG maillist - Distutils-SIG@python.org
https://mail.python.org/mailman/listinfo/distutils-sig
