Pixi as an alternative to conda-lock

[scottyhq]

Is your feature request related to a problem? Please describe.
conda-lock has worked really well for this project! Looking forward it might be worth also supporting or switching to pixi for environment management https://pixi.sh

Describe the solution you'd like
Try using pixi instead of conda-lock and supporting pixi.lock as another file that can be installed

pangeo-docker-images/base-image/Dockerfile

Line 75 in 77b90e0

&& mamba install conda-lock -y \

pangeo-docker-images/base-image/Dockerfile

Lines 163 to 168 in 77b90e0

	; if test -f "conda-lock.yml" ; then echo "Using conda-lock.yml" & \
	conda-lock install --name ${CONDA_ENV} \
	; elif test -f "environment.yml" ; then echo "Using environment.yml" & \
	mamba env create --name ${CONDA_ENV} -f environment.yml \
	; else echo "No conda-lock.yml or environment.yml! *creating default env*" ; \
	mamba create --name ${CONDA_ENV} pangeo-notebook \

Describe alternatives you've considered
Stick with what's been working fine

Additional context
Discussion of pixi on conda-lock repo conda/conda-lock#615

Also https://github.com/prefix-dev/pixi-docker

[weiji14]

Been thinking about this too. I'd seriously consider making the jump once repo2docker supports pixi lock files (jupyterhub/repo2docker#1339), though we can test things out using the Dockerfile path too. We'll need to document this change though as some people might be depending on the conda-lock files and changing to pixi.lock will break their workflows.