Standard installation method is not working

Problem description

I have a working distribution of Calliope on my machine, and it works great. However, I’m helping a colleague install it on his machine, and the install is not working. It seems the default is to import Calliope 0.6.2, and there are errors with the enum package. I’ve included the full traceback below.

Steps to reproduce the problem

I use the standard installation from a command line:

conda create -c conda-forge -n calliope_alt calliope

which creates a new environment called calliope_alt with the package in it (I call it calliope_alt since my working distribution is an environment named calliope). However, when I open a python3 interpreter and try to import calliope, I get a set of errors:

(calliope_alt) $ python3
Python 3.6.10 | packaged by conda-forge | (default, Apr 24 2020, 16:27:41) 
[GCC Clang 9.0.1 ] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import calliope
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/aph416/opt/anaconda3/envs/calliope_alt/lib/python3.6/site-packages/calliope/__init__.py", line 2, in <module>
    from calliope.core import AttrDict, Model, read_netcdf, _logger, set_log_level
  File "/Users/aph416/opt/anaconda3/envs/calliope_alt/lib/python3.6/site-packages/calliope/core/__init__.py", line 1, in <module>
    from calliope.core.model import Model, read_netcdf
  File "/Users/aph416/opt/anaconda3/envs/calliope_alt/lib/python3.6/site-packages/calliope/core/model.py", line 28, in <module>
    from calliope.backend.run import run as run_backend
  File "/Users/aph416/opt/anaconda3/envs/calliope_alt/lib/python3.6/site-packages/calliope/backend/run.py", line 14, in <module>
    import calliope.backend.pyomo.model as run_pyomo
  File "/Users/aph416/opt/anaconda3/envs/calliope_alt/lib/python3.6/site-packages/calliope/backend/pyomo/model.py", line 16, in <module>
    import pyomo.core as po  # pylint: disable=import-error
  File "/Users/aph416/opt/anaconda3/envs/calliope_alt/lib/python3.6/site-packages/pyomo/core/__init__.py", line 14, in <module>
    from pyomo.core.base import *
  File "/Users/aph416/opt/anaconda3/envs/calliope_alt/lib/python3.6/site-packages/pyomo/core/base/__init__.py", line 11, in <module>
    import pyomo.core.kernel
  File "/Users/aph416/opt/anaconda3/envs/calliope_alt/lib/python3.6/site-packages/pyomo/core/kernel/__init__.py", line 15, in <module>
    import pyomo.opt
  File "/Users/aph416/opt/anaconda3/envs/calliope_alt/lib/python3.6/site-packages/pyomo/opt/__init__.py", line 14, in <module>
    from pyomo.opt.base import *
  File "/Users/aph416/opt/anaconda3/envs/calliope_alt/lib/python3.6/site-packages/pyomo/opt/base/__init__.py", line 14, in <module>
    from pyomo.opt.base.convert import *
  File "/Users/aph416/opt/anaconda3/envs/calliope_alt/lib/python3.6/site-packages/pyomo/opt/base/convert.py", line 16, in <module>
    from pyomo.opt.base.formats import guess_format
  File "/Users/aph416/opt/anaconda3/envs/calliope_alt/lib/python3.6/site-packages/pyomo/opt/base/formats.py", line 16, in <module>
    from pyutilib.enum import Enum
  File "/Users/aph416/opt/anaconda3/envs/calliope_alt/lib/python3.6/site-packages/pyutilib/enum/__init__.py", line 18, in <module>
    package) that supersedes this library.""")
ImportError: pyutilib.enum has been removed.

Python 3 now has an enum implementation in the standard library (also
available for older Python versions as the third-party enum34 PyPI
package) that supersedes this library.

This seems to be related to this error, but I could not figure out a quick fix. On closer inspection, I see that my Calliope version is 0.6.2. I’ve tried forcing conda to install a specific version using calliope=0.6.5 or calliope=0.6.4, but this doesn’t solve the problem.

Calliope version

I’m trying to install 0.6.5 (I was originally trying for 0.6.4, but this seems to pop up for any version). However, conda seems to be installing 0.6.2.

[brynpickering]

Just remove coincbc (referring to the CBC solver) from the list @bbrannon4, since it isn’t available via conda forge for Windows

[ahilbers]

In case anyone runs into this issue, running the install with the following command seems to work (credit to @jfallon1997, similar idea to @timtroendle 's above):

conda create -n calliope -c conda-forge calliope=0.6.5 python=3.8.1 numpy=1.16.5 pandas=0.25.3 pyomo=5.6.8 pyutilib=5.7.3 coincbc