How to install local library with pip to a conda environment using environtment.yml file?

Question

I want to set up an environment.myl file for a project's conda environment. I have a local package that I would normally use pip install -e . so I can work on the code locally. Is there a way to use pip to install this package with the env file?

I tried this based on something I found using install options with github links, but doesn't work.

name: foo
channels:
  - defaults
dependencies:
  - python=3.7
  - pip
  - pip:
    - /Users/me/projects/package/ --install-option="-e"

Answer 1

As far as I can tell from reading the code, conda-env will copy the entries in the pip dictionary and place them into a temporary pip requirements file. Hence, you should follow the Requirements File Format, namely,

name: foo
channels:
  - defaults
dependencies:
  - python=3.7
  - pip
  - pip:
    - -e /Users/me/projects/package

I did a quick test on a local package and I was able to verify that the package installed and shows up in pip list -e.

There is also an advanced-pip/ example in the repo that illustrates some additional options.