--install-option (in the cli) gets passed to deps being installed

$ pip install --install-option='--salt-root=/foo' salt
Downloading/unpacking salt
  Downloading salt-2014.1.5.tar.gz (2.8MB): 2.8MB downloaded
  Running setup.py (path:/tmp/ve-test/build/salt/setup.py) egg_info for package salt
    2014.1.5

    package init file 'salt/templates/__init__.py' not found (or not a regular file)
Downloading/unpacking Jinja2 (from salt)
  Downloading Jinja2-2.7.3.tar.gz (378kB): 378kB downloaded
  Running setup.py (path:/tmp/ve-test/build/Jinja2/setup.py) egg_info for package Jinja2

    warning: no files found matching '*' under directory 'custom_fixers'
    warning: no previously-included files matching '*' found under directory 'docs/_build'
    warning: no previously-included files matching '*.pyc' found under directory 'jinja2'
    warning: no previously-included files matching '*.pyc' found under directory 'docs'
    warning: no previously-included files matching '*.pyo' found under directory 'jinja2'
    warning: no previously-included files matching '*.pyo' found under directory 'docs'
Downloading/unpacking M2Crypto (from salt)
  Downloading M2Crypto-0.22.3.tar.gz (74kB): 74kB downloaded
  Running setup.py (path:/tmp/ve-test/build/M2Crypto/setup.py) egg_info for package M2Crypto

Downloading/unpacking msgpack-python (from salt)
  Downloading msgpack-python-0.4.2.tar.gz (114kB): 114kB downloaded
  Running setup.py (path:/tmp/ve-test/build/msgpack-python/setup.py) egg_info for package msgpack-python

Downloading/unpacking pycrypto (from salt)
  Downloading pycrypto-2.6.1.tar.gz (446kB): 446kB downloaded
  Running setup.py (path:/tmp/ve-test/build/pycrypto/setup.py) egg_info for package pycrypto

Downloading/unpacking PyYAML (from salt)
  Downloading PyYAML-3.11.tar.gz (248kB): 248kB downloaded
  Running setup.py (path:/tmp/ve-test/build/PyYAML/setup.py) egg_info for package PyYAML

Downloading/unpacking pyzmq>=2.2.0 (from salt)
  Downloading pyzmq-14.3.1.tar.gz (982kB): 982kB downloaded
  Running setup.py (path:/tmp/ve-test/build/pyzmq/setup.py) egg_info for package pyzmq

    no previously-included directories found matching 'docs/build'
    no previously-included directories found matching 'docs/gh-pages'
    warning: no previously-included files found matching 'bundled/zeromq/src/Makefile*'
    warning: no previously-included files found matching 'bundled/zeromq/src/platform.hpp'
    warning: no previously-included files found matching 'setup.cfg'
    warning: no previously-included files found matching 'zmq/libzmq*'
    warning: no previously-included files matching '__pycache__/*' found anywhere in distribution
    warning: no previously-included files matching '.deps/*' found anywhere in distribution
    warning: no previously-included files matching '*.so' found anywhere in distribution
    warning: no previously-included files matching '*.pyd' found anywhere in distribution
    warning: no previously-included files matching '.git*' found anywhere in distribution
    warning: no previously-included files matching '.DS_Store' found anywhere in distribution
    warning: no previously-included files matching '.mailmap' found anywhere in distribution
    warning: no previously-included files matching 'Makefile.am' found anywhere in distribution
    warning: no previously-included files matching 'Makefile.in' found anywhere in distribution
Downloading/unpacking MarkupSafe (from salt)
  Downloading MarkupSafe-0.23.tar.gz
  Running setup.py (path:/tmp/ve-test/build/MarkupSafe/setup.py) egg_info for package MarkupSafe

Downloading/unpacking apache-libcloud (from salt)
  Downloading apache_libcloud-0.14.1-py2.py3-none-any.whl (1.2MB): 1.2MB downloaded
Installing collected packages: salt, Jinja2, M2Crypto, msgpack-python, pycrypto, PyYAML, pyzmq, MarkupSafe, apache-libcloud
  Running setup.py install for salt
    2014.1.5
    package init file 'salt/templates/__init__.py' not found (or not a regular file)

    Installing salt-run script to /tmp/ve-test/bin
    Installing salt-minion script to /tmp/ve-test/bin
    Installing salt script to /tmp/ve-test/bin
    Installing salt-key script to /tmp/ve-test/bin
    Installing salt-call script to /tmp/ve-test/bin
    Installing salt-cp script to /tmp/ve-test/bin
    Installing salt-syndic script to /tmp/ve-test/bin
    Installing salt-ssh script to /tmp/ve-test/bin
    Installing salt-master script to /tmp/ve-test/bin
    Installing salt-cloud script to /tmp/ve-test/bin
  Running setup.py install for Jinja2
    usage: -c [global_opts] cmd1 [cmd1_opts] [cmd2 [cmd2_opts] ...]
       or: -c --help [cmd1 cmd2 ...]
       or: -c --help-commands
       or: -c cmd --help

    error: option --salt-root not recognized
    Complete output from command /tmp/ve-test/bin/python2 -c "import setuptools, tokenize;__file__='/tmp/ve-test/build/Jinja2/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-gFIT34-record/install-record.txt --single-version-externally-managed --compile --install-headers /tmp/ve-test/include/site/python2.7 --salt-root=/foo:
    usage: -c [global_opts] cmd1 [cmd1_opts] [cmd2 [cmd2_opts] ...]

   or: -c --help [cmd1 cmd2 ...]

   or: -c --help-commands

   or: -c cmd --help



error: option --salt-root not recognized

----------------------------------------
Cleaning up...
Command /tmp/ve-test/bin/python2 -c "import setuptools, tokenize;__file__='/tmp/ve-test/build/Jinja2/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-gFIT34-record/install-record.txt --single-version-externally-managed --compile --install-headers /tmp/ve-test/include/site/python2.7 --salt-root=/foo failed with error code 1 in /tmp/ve-test/build/Jinja2
Storing debug log for failure in /home/vampas/.pip/pip.log

[t-neumann]

Is the a resolution for that issue available yet?

This temporary workaround of first installing the package with dependencies and then re-installing the package with --install-option is not working for me:

Additional software is installed during the installation of the package and the --install-option could skip this step. But there’s no use for this flag to simply install everything including the software first, just to then uninstall it again.

[chrahunt]

Assuming we want to NOT pass options to dependencies by default (and possibly remove the ability entirely), one possible approach would be:

1. Introduce a flag --pass-options-to-deps that makes pip behave the way it currently does. --no-pass-options-to-deps makes pip not pass options to dependencies.
2. By default assume that we should pass options to dependencies, but if no explicit option was passed then print a deprecation warning stating that the behavior is changing in (if implemented right now) 20.2.
3. In 20.2, change the default and remove the deprecation warning

If we want to remove the options getting passed to all dependencies behavior then the deprecation warning should also be traced if --pass-options-to-deps is used.

One reason we may want to remove the behavior entirely is to transition fully over to config settings (#5771), which we could incorporate this kind of configuration into.