Selector resolution problem / Python 2,3 compatibility issue?

[jakirkham]

When trying run conda-build-all on the included recipe, I encounter a build issue when the root environment is Python 3, but not when the root environment is Python 2. More details about the recipe and environments below. Was unable to reproduce this with conda-build alone in either environment. Am sort of suspicious that this issue is actually caused by Python versions. Though it could be.

Python 3 traceback (Python 2 has no issues).

$ conda build-all recipes/wrf-python --matrix-condition "numpy >=1.11" "python >=2.7,<3|>=3.5" 
Fetching package metadata .............
Error: Invalid selector in meta.yaml line 15:
  skip: True  # [win32 or np>=112 or (win and py>=35)]

Recipe below.

# meta.yaml
{% set version = "1.0b1" %}

package:
  name: wrf-python
  version: {{ version }}

source:
  fn: wrf-python-{{ version }}.tar.gz
  url: https://github.com/NCAR/wrf-python/archive/{{ version }}.tar.gz
  sha256: 94f05a9719701959702094eafb84555a996bc4f7d75042fb07bca3c35bda9f31

build:
  number: 1
  detect_binary_files_with_prefix: true
  skip: True  # [win32 or np>=112 or (win and py>=35)]

requirements:
  build:
    - pip
    - numpy x.x
    - wrapt
    - m2w64-toolchain  # [win]
    - gcc  # [unix]
    - libgcc  # [unix]
    - python
    - vc 9  # [win and py27]
    - vc 10  # [win and py34]
    - vc 14  # [win and py>=35]
  run:
    - numpy x.x
    - python
    - wrapt 
    - m2w64-toolchain  # [win]
    - gcc  # [unix]
    - libgcc  # [unix]
    - xarray
    - vc 9  # [win and py27]
    - vc 10  # [win and py34]
    - vc 14  # [win and py>=35]

test:
  requires:
    - nose
  imports:
    - wrf 

about:
  home: https://github.com/NCAR/wrf-python
  license: "NCL Source Code"
  summary: "Diagnostic and interpolation routines for WRF-ARW data."

extra:
  recipe-maintainers:
    - bladwig1
    - marylhaley
    - david-ian-brown
    - khallock

Python 2 environment

# environment2.yml
name: root
channels: !!python/tuple
- !!python/unicode
  'nanshe'
- !!python/unicode
  'conda-forge'
- !!python/unicode
  'jakirkham'
- !!python/unicode
  'defaults'
dependencies:
- beautifulsoup4=4.5.3=py27_0
- chardet=2.3.0=py27_0
- conda-forge::anaconda-client=1.5.1=py27_0
- conda-forge::anaconda-verify=1.2.0=py27_0
- conda-forge::appnope=0.1.0=py27_0
- conda-forge::backports.shutil_get_terminal_size=1.0.0=py27_1
- conda-forge::ca-certificates=2016.9.26=0
- conda-forge::certifi=2016.9.26=py27_0
- conda-forge::cffi=1.7.0=py27_0
- conda-forge::clyent=1.2.1=py27_0
- conda-forge::conda=4.2.13=py27_0
- conda-forge::conda-build=2.1.1=py27_1
- conda-forge::conda-build-all=1.0.1=py27_1
- conda-forge::conda-env=2.6.0=0
- conda-forge::conda-execute=0.8.0=py27_0
- conda-forge::constructor=1.3.4=py27_0
- conda-forge::contextlib2=0.5.4=py27_0
- conda-forge::coverage=3.7.1=py27_0
- conda-forge::curl=7.52.1=0
- conda-forge::decorator=4.0.10=py27_0
- conda-forge::enum34=1.1.6=py27_1
- conda-forge::expat=2.1.0=2
- conda-forge::filelock=2.0.6=py27_0
- conda-forge::funcsigs=1.0.2=py27_0
- conda-forge::futures=3.0.5=py27_0
- conda-forge::gitdb=0.6.4=py27_1
- conda-forge::gitpython=2.1.1=py27_0
- conda-forge::idna=2.1=py27_0
- conda-forge::ipaddress=1.0.16=py27_0
- conda-forge::ipython=5.1.0=py27_2
- conda-forge::ipython_genutils=0.1.0=py27_0
- conda-forge::jinja2=2.8=py27_1
- conda-forge::libconda=4.0.0=py27_0
- conda-forge::libffi=3.2.1=3
- conda-forge::markupsafe=0.23=py27_1
- conda-forge::mock=2.0.0=py27_0
- conda-forge::ncurses=5.9=10
- conda-forge::nose=1.3.7=py27_2
- conda-forge::openssl=1.0.2h=3
- conda-forge::pathlib2=2.1.0=py27_0
- conda-forge::pbr=1.10.0=py27_0
- conda-forge::pexpect=4.2.1=py27_0
- conda-forge::pickleshare=0.7.3=py27_0
- conda-forge::pip=9.0.1=py27_0
- conda-forge::pkginfo=1.2.1=py27_0
- conda-forge::prompt_toolkit=1.0.9=py27_0
- conda-forge::psutil=4.3.0=py27_0
- conda-forge::ptyprocess=0.5.1=py27_0
- conda-forge::pyasn1=0.1.9=py27_0
- conda-forge::pycosat=0.6.1=py27_0
- conda-forge::pycparser=2.17=py27_0
- conda-forge::pycrypto=2.6.1=py27_0
- conda-forge::pygithub=1.29=py27_0
- conda-forge::pygments=2.1.3=py27_1
- conda-forge::pyopenssl=16.0.0=py27_0
- conda-forge::python=2.7.12=1
- conda-forge::python-dateutil=2.6.0=py27_0
- conda-forge::pytz=2016.10=py27_0
- conda-forge::pyyaml=3.11=py27_0
- conda-forge::readline=6.2=0
- conda-forge::requests=2.12.4=py27_0
- conda-forge::ruamel.ordereddict=0.4.6=py27_0
- conda-forge::ruamel.yaml=0.13.7=py27_0
- conda-forge::ruamel_yaml=0.11.14=py27_0
- conda-forge::setuptools=32.3.1=py27_0
- conda-forge::simplegeneric=0.8.1=py27_0
- conda-forge::six=1.10.0=py27_1
- conda-forge::smmap=2.0.1=py27_0
- conda-forge::sqlite=3.13.0=1
- conda-forge::tk=8.5.19=1
- conda-forge::traitlets=4.3.1=py27_0
- conda-forge::typing=3.5.3.0=py27_0
- conda-forge::wcwidth=0.1.7=py27_0
- conda-forge::wheel=0.29.0=py27_0
- conda-forge::yaml=0.1.6=0
- conda-forge::zlib=1.2.8=3
- conda-verify=2.0.0=py27_0
- cryptography=1.7.1=py27_0
- python.app=1.2=py27_4
- pip:
  - backports.shutil-get-terminal-size==1.0.0
  - conda-build-all (/zopt/conda2/lib/python2.7/site-packages)==1.0.1
  - conda-smithy (/Users/kirkhamj/Developer/Conda/conda-forge/conda-smithy)==2.0.0
  - ipython-genutils==0.1.0
  - prompt-toolkit==1.0.9
  - ruamel-yaml==0.11.14
  - smmap2==2.0.1
prefix: /zopt/conda2

Python 3 environment

# environment3.yml
name: root
channels: !!python/tuple
- nanshe
- conda-forge
- jakirkham
- defaults
dependencies:
- beautifulsoup4=4.5.3=py35_0
- chardet=2.3.0=py35_0
- conda-forge::anaconda-client=1.5.1=py35_0
- conda-forge::appnope=0.1.0=py35_0
- conda-forge::backports.shutil_get_terminal_size=1.0.0=py35_1
- conda-forge::ca-certificates=2016.9.26=0
- conda-forge::certifi=2016.9.26=py35_0
- conda-forge::clyent=1.2.1=py35_0
- conda-forge::conda=4.2.13=py35_0
- conda-forge::conda-build=2.1.1=py35_1
- conda-forge::conda-build-all=1.0.1=py35_1
- conda-forge::conda-env=2.6.0=0
- conda-forge::decorator=4.0.10=py35_0
- conda-forge::filelock=2.0.6=py35_0
- conda-forge::freetype=2.6.3=1
- conda-forge::gitdb=0.6.4=py35_1
- conda-forge::gitpython=2.1.1=py35_0
- conda-forge::ipython=5.1.0=py35_2
- conda-forge::ipython_genutils=0.1.0=py35_0
- conda-forge::jinja2=2.8=py35_1
- conda-forge::jpeg=9b=0
- conda-forge::libpng=1.6.28=0
- conda-forge::libtiff=4.0.6=7
- conda-forge::markupsafe=0.23=py35_1
- conda-forge::mock=2.0.0=py35_0
- conda-forge::ncurses=5.9=10
- conda-forge::nose=1.3.7=py35_2
- conda-forge::openssl=1.0.2h=3
- conda-forge::path.py=8.2.1=py35_0
- conda-forge::pbr=1.10.0=py35_0
- conda-forge::pexpect=4.2.1=py35_0
- conda-forge::pickleshare=0.7.3=py35_0
- conda-forge::pillow=4.0.0=py35_0
- conda-forge::pip=9.0.1=py35_0
- conda-forge::pkginfo=1.2.1=py35_0
- conda-forge::prompt_toolkit=1.0.9=py35_0
- conda-forge::ptyprocess=0.5.1=py35_0
- conda-forge::pycosat=0.6.1=py35_0
- conda-forge::pycrypto=2.6.1=py35_0
- conda-forge::pygithub=1.29=py35_0
- conda-forge::pygments=2.1.3=py35_1
- conda-forge::python=3.5.2=5
- conda-forge::python-dateutil=2.6.0=py35_0
- conda-forge::python-simplegeneric=0.8.1=py35_0
- conda-forge::pytz=2016.10=py35_0
- conda-forge::pyyaml=3.11=py35_0
- conda-forge::readline=6.2=0
- conda-forge::requests=2.12.4=py35_0
- conda-forge::ruamel.yaml=0.13.7=py35_0
- conda-forge::ruamel_yaml=0.11.14=py35_0
- conda-forge::setuptools=32.3.1=py35_0
- conda-forge::simplegeneric=0.8.1=py35_0
- conda-forge::six=1.10.0=py35_1
- conda-forge::smmap=2.0.1=py35_0
- conda-forge::sqlite=3.13.0=1
- conda-forge::tk=8.5.19=1
- conda-forge::traitlets=4.3.1=py35_0
- conda-forge::wcwidth=0.1.7=py35_0
- conda-forge::wheel=0.29.0=py35_0
- conda-forge::xz=5.2.2=0
- conda-forge::yaml=0.1.6=0
- conda-forge::zlib=1.2.8=3
- conda-verify=2.0.0=py35_0
- jbig=2.1=0
- python.app=1.2=py35_4
- pip:
  - backports.shutil-get-terminal-size==1.0.0
  - conda-smithy (/Users/kirkhamj/Developer/Conda/conda-forge/conda-smithy)==2.0.0
  - ipython-genutils==0.1.0
  - prompt-toolkit==1.0.9
  - ruamel-yaml==0.11.14
  - smmap2==2.0.1
prefix: /zopt/conda3

[pelson]

I've just taken a look at this, and realised that it is a conda-build issue, not a conda-build-all one:

pelson@~/dev/conda-build-all> conda build --version
conda-build 2.1.18

pelson@~/dev/conda-build-all> conda build my_recipes/broken_py3 --debug
Error: Invalid selector in meta.yaml line 16:
  skip: True  # [win32 or np>=112 or (win and py>=35)]

Possibly related to conda/conda-build#1202

[jakirkham]

Don't think that issue is related. It's about things like np112, which wasn't used here.