PyMC3 docker container from version 3.9.3 and above does not find module 'theano'

[mdapri]

Hi, I am using Docker Desktop on windows 10.
I have pulled the version latest, 3.10.0 and 3.9.3 version and the behavior is the same
The issue does not appear in version 3.9.2

opening the api_quickstart.ipynb jupyter notebook located in /home/jovyan/notebooks and running the first cell

import arviz as az
import matplotlib.pyplot as plt
import numpy as np
import pymc3 as pm
import theano.tensor as tt
import warnings

warnings.simplefilter(action="ignore", category=FutureWarning)

the following error appears

.... ModuleNotFoundError: No module named 'arviz'

Commenting the
import arviz as az
the error becomes
ModuleNotFoundErrorTraceback (most recent call last)
...
~/pymc3/__init__.py in __set_compiler_flags()
31 def __set_compiler_flags():
32 # Workarounds for Theano compiler problems on various platforms
---> 33 import theano
34 current = theano.config.gcc.cxxflags
35 theano.config.gcc.cxxflags = f"{current} -Wno-c++11-narrowing"

ModuleNotFoundError: No module named 'theano'

No issue on version 3.9.2

Versions and main components

Docker Desktop with Docker Engine v19.03.13
OS: Windows 10
Docker pull commands:

• docker pull pymc/pymc3:version-3.9.3
• docker pull pymc/pymc3:version-3.10.0

[twiecki]

This is odd, the container should use the same install chain as our test env. @MarcoGorelli any idea?

[MarcoGorelli]

Hi @mdapri , thanks for the report

I hadn't yet looked at the Dockerfile, but I've noticed that it contains

    mamba env update -f environment-dev.yml
  else
    conda config --add channels conda-forge
    conda config --set channel_priority strict
    conda install -c conda-forge mamba --yes
    mamba env create -f environment-dev.yml

which may need to be updated to use conda-envs/environment-dev-py38.yml - are you interested in trying that out and then opening a pull request? If so, here's the contributing guide

---

having said that, the environment-dev.yml file still existed when 3.9.3 was released, so I don't know what would have caused that one to fail