Combining conda environment.yml with pip requireme

Question

I work with conda environments and need some pip packages as well, e.g. pre-compiled wheels from ~gohlke.

At the moment I have two files: environment.yml for conda with:

# run: conda env create --file environment.yml
name: test-env
dependencies:
- python>=3.5
- anaconda

and requirements.txt for pip which can be used after activating above conda environment:

# run: pip install -i requirements.txt
docx
gooey
http://www.lfd.uci.edu/~gohlke/pythonlibs/bofhrmxk/opencv_python-3.1.0-cp35-none-win_amd64.whl

Is there a possibility to combine them in one file (for conda)?

Answer 1

One can also use the requirements.txt directly in the YAML. For example,

name: test-env
dependencies:
  - python>=3.5
  - anaconda
  - pip
  - pip:
    - -r file:requirements.txt

Basically, any command you can run with pip you can run in a YAML. See the Advanced Pip Example for a showcase of other capabilities.

Answer 2

Just want to add that adding a wheel in the directory also works. I was getting this error when using the entire URL:

HTTP error 404 while getting http://www.lfd.uci.edu/~gohlke/pythonlibs/f9r7rmd8/opencv_python-3.1.0-cp35-none-win_amd64.whl

Ended up downloading the wheel and saving it into the same directory as the yml file.

name: test-env
dependencies:
- python>=3.5
- anaconda
- pip
- pip:
  - opencv_python-3.1.0-cp35-none-win_amd64.whl

Answer 3

Pip dependencies can be included in the environment.yml file like this (docs):

# run: conda env create --file environment.yml
name: test-env
dependencies:
- python>=3.5
- anaconda
- pip
- pip:
  # works for regular pip packages
  - docx
  - gooey
  # and for wheels
  - http://www.lfd.uci.edu/~gohlke/pythonlibs/bofhrmxk/opencv_python-3.1.0-cp35-none-win_amd64.whl

It also works for .whl files in the same directory (see Dengar's answer) as well as with common pip packages.