[Docs] Creating conda environment from root YAML does not work for macOS

[larsmaxfield]

If I create a conda environment in macOS using environment.yml, I get a "Packages not found" error.

I was able to get an environment working with:

conda config --append channels conda-forge
conda create --prefix ./env python=3.7
conda activate ./env
conda install pyqt=5.9
conda install piexif

I propose editing the Developers documentation to include steps to "manually" install the environment as I've done.

[NagabhushanSN95]

@larsmaxfield can you please list out the steps atleast here so that I can follow that until the documentation is updated

[larsmaxfield]

@NagabhushanSN95 I won't be able to verify this for a couple weeks as I don't have access to a Mac, but the main steps (if I recall correctly) should be these:

• Install Anaconda, ensuring Anaconda Prompt is accessible afterwards

• Clone the repo (or otherwise download the repo) to a local folder you can locate

• Open Anaconda Prompt

• In Anaconda Prompt, do this:

  • Change directory to the root of the repo (the folder of the code — something like cd Users/YourUsername/Documents/butterfly_viewer)
  • Run the conda commands I posted above in order:
  • conda config --append channels conda-forge
  • conda create --prefix ./env python=3.7
  • conda activate ./env
  • conda install pyqt=5.9
  • conda install piexif
  • Change directory to the source subfolder with cd butterfly_viewer
  • Run the Viewer with python butterfly_viewer.py