Latest fortran pinned at version 4 but mpich requires 3

[ChristopherHogan]

Issue: I have a recipe that depends on mpich and also uses compiler('fortran'). On MacOS, the fortran compiler seems to be pinned at version 4, while mpich requires version 3:

conda.exceptions.UnsatisfiableError: The following specifications were found to be in conflict:
  - libgfortran[version='>=4.0.0,<5.0.0.a0']
  - mpich=3.2 -> libgfortran[version='>=3.0.1,<4.0.0.a0']

Hopefully just a rerender is needed.

@conda-forge-admin, please rerender
Environment (conda list):

``` $ conda list N/A ```

Details about conda and system ( conda info ):

``` $ conda info active environment : base active env location : /Users/travis/miniconda shell level : 1 user config file : /Users/travis/.condarc populated config files : /Users/travis/.condarc conda version : 4.6.3 conda-build version : 3.17.8 python version : 3.7.1.final.0 base environment : /Users/travis/miniconda (writable) channel URLs : https://repo.anaconda.com/pkgs/main/osx-64 https://repo.anaconda.com/pkgs/main/noarch https://repo.anaconda.com/pkgs/free/osx-64 https://repo.anaconda.com/pkgs/free/noarch https://repo.anaconda.com/pkgs/r/osx-64 https://repo.anaconda.com/pkgs/r/noarch package cache : /Users/travis/miniconda/pkgs /Users/travis/.conda/pkgs envs directories : /Users/travis/miniconda/envs /Users/travis/.conda/envs platform : osx-64 user-agent : conda/4.6.3 requests/2.21.0 CPython/3.7.1 Darwin/17.4.0 OSX/10.13.3 UID:GID : 501:20 netrc file : None offline mode : False ```

[conda-forge-linter]

Hi! This is the friendly automated conda-forge-webservice.

I've rerendered the recipe as requested, but nothing actually changed.

[ChristopherHogan]

Not sure why the error is different, but now I'm seeing

conda.exceptions.UnsatisfiableError: The following specifications were found to be in conflict:
  - hdf5=[build=mpi_mpich_*] -> libgfortran[version='>=3.0.1,<4.0.0.a0']
  - libgfortran[version='>=4.0.0,<5.0.0.a0']

Here's the meta.yaml:

{% set version = "1.8.1.dev" %}
{% set buildnumber = 0 %}

package:
  name: mpb
  version: {{version}}

source:
  git_url: https://github.com/NanoComp/mpb.git
  git_rev: master

build:
  number: {{buildnumber}}
  features:
    - nomkl

requirements:
  build:
    - {{ compiler('c') }}
    - {{ compiler('fortran') }}
  host:
    - openblas
    - mpich
    - fftw
    - hdf5 * mpi_mpich_*
    - libctl >=4.1.4
  run:
    - openblas
    - fftw
    - hdf5 * mpi_mpich_*
    - libctl >=4.1.4
    - nomkl

test:
  commands:
    - test -f ${PREFIX}/lib/libmpb${SHLIB_EXT}

about:
  home: http:/github.com/NanoComp/mpb
  license: GPL-2.0
  license_file: COPYING
  summary: MIT Photonic-Bands - computation of photonic band structures in periodic media
  doc_url: http://mpb.readthedocs.io
  dev_url: https://github.com/NanoComp/mpb

[ChristopherHogan]

I think this belongs in conda-forge/hdf5-feedstock#103 instead.