Add conda-build

[jakirkham]

Adds a recipe for conda-build. Written from scratch. Please let me know if you have any thoughts or suggestions

cc @conda-forge/core @msarahan @ilanschnell @kalefranz @mcg1969 @mingwandroid

[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 (recipes/conda-build) and found it was in an excellent condition.

[msarahan]

add me please

[jakirkham]

Of course. 😄

[jakirkham]

See below.

[patricksnape]

Weird windows error? C:\Miniconda\conda-bld\test-tmp_dir>call activate _test could not find environment: _test

[jakirkham]

@msarahan, any idea what is going on with Windows? As @patricksnape points out, it appears to not be able to activate the environment.

[msarahan]

Not sure if I have a fix in above PR. Possibly. I'm going to tag 1.21.6 tomorrow - let's rebuild this when that is available.

[jakirkham]

The OS X failure is a different story. Are we missing a dependency maybe? Or is this conda inspect still failing in tests on OS X?

+conda inspect -h
Traceback (most recent call last):
  File "/Users/travis/miniconda/bin/conda-inspect", line 3, in <module>
    from conda_build.main_inspect import main
  File "/Users/travis/miniconda/lib/python3.5/site-packages/conda_build/main_inspect.py", line 22, in <module>
    from conda.cli.install import check_install
ImportError: cannot import name 'check_install'

[msarahan]

That should come from conda, obviously. If we're not seeing it here, then I think the reason might be that conda is in the root environment, but that's not on sys.path?

[jakirkham]

Though we do have conda as a dependency.