tree 4273eab30e5957d6d5dc595222b57acf47c39885
parent 0ab06a2d6cc5abca83d9c8a21d65630b773a079b
author Henry Fuller <hrofuller@gmail.com> 1618513872 -0700
committer GitHub <noreply@github.com> 1618513872 -0700
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Parse requirements files for global pip flags. (#456)

Parse requirements files for global pip flags, then add them to the extra_pip_args array.

Pass a copy of each cleaned up line (comments and line-breaks removed) to
each whl_library repo verbatim. Then link based requirements or requirement
lines with requirement specific flags work.

Due to the pip restriction on using requirement specific flags in
requirements.txt files only, write each requirement line to a temp file
before invoking pip in each whl_library repo.

Fixes #438 #447