pip v10.0.0

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[conda-forge-linter]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

[jakirkham]

We will need to tread carefully here as we need to document disabling build isolation generally. Alternatively we could teach pip to do that for us when using conda-build.

cc @conda-forge/core

xref: pypa/pip#5033
xref: pypa/pip#5053
xref: conda/conda-build#2748
xref: pypa/pip#5060

[jjhelmus]

For reference, --no-build-isolation is needed to disable build isolation in pip 10. I took a while but I finally ran into a case where this was needed, conda-forge/dask-ml-feedstock#6.

[isuruf]

How about adding a activate script that exports PIP_NO_BUILD_ISOLATION=True when CONDA_BUILD is set?

[msarahan]

Seems to me that conda-build should set PIP_NO_BUILD_ISOLATION=True anyway

[isuruf]

Btw, I'm not sure if the option is PIP_NO_BUILD_ISOLATION=True or PIP_BUILD_ISOLATION=False

[jakirkham]

There are a bunch of options discussed in issue ( conda/conda-build#2748 ) for generally handling pip flags in a nicer way.

Should add we might want to skip to 10.0.1 if we are doing this. ( #11 )

[jjhelmus]

pypa/pip#5229 seems to indicate that the variable should be PIP_NO_BUILD_ISOLATION=false.

[jjhelmus]

I tested a recipe that requires build isolation and can confirm that PIP_NO_BUILD_ISOLATION=False is the correct setting to DISABLE build isolation.