pdm-conda 0.7.0b1

A PDM plugin to install project dependencies with Conda

pdm-conda

A PDM plugin to install project dependencies with Conda.

Configuration

Config item	Description	Default value	Possible values	Environment variable
conda.runner	Conda runner executable	conda	conda, mamba, micromamba	CONDA_RUNNER
conda.channels	Conda channels to use, order will be enforced	[]
conda.as-default-manager	Use Conda to install all possible requirements	False		CONDA_AS_DEFAULT_MANAGER
conda.excluded	Array of dependencies to exclude from Conda resolution	[]
conda.installation-method	Installation method to use when installing dependencies with Conda	hard-link	hard-link, copy	CONDA_INSTALLATION_METHOD
conda.dependencies	Array of dependencies to install with Conda, analogue to project.dependencies	[]
conda.optional-dependencies	Groups of optional dependencies to install with Conda, analogue to project.optional-dependencies	{}
conda.dev-dependencies	Groups of development dependencies to install with Conda, analogue to tool.pdm.dev-dependencies	{}
conda.pypi-mapping.download-dir	PyPI-Conda mapping download directory	$HOME/.pdm-conda/		PYPI_MAPPING_DIR

All configuration items use prefix pdm.tool, this is a viable configuration:

[tool.pdm.conda]
runner = "micromamba"
channels = ["conda-forge/noarch", "conda-forge", "anaconda"]
dependencies = ["pdm"]
as-default-manager = true
excluded = ["pytest-cov"] # don't install with conda even if it's a dependency from other packages
installation-method = "copy"


[tool.pdm.conda.pypi-mapping]
download-dir = "/tmp"

[tool.pdm.conda.optional-dependencies]
extra = ["anaconda:ffmpeg"] # non python dependency, obtained from anaconda channel

[tool.pdm.conda.dev-dependencies]
dev = ["pytest"]

Usage

This plugin adds capabilities to the default PDM commands.

Working commands

The following commands were tested and work:

• pdm lock
• pdm install
• pdm add:
  • To add a Conda managed package --conda flag can be used multiple times followed a package (analogue to --editable).
  • You can specify per package Conda channel using conda notation channel::package.
  • You also can specify a default Conda channel with -c or --channel.
  • With flag -r or --runner you can specify the Conda runner to use.
• pdm remove
• pdm list

How it works

When PDM detects a Conda managed package, it gets Candidates with Conda and then tries to resolve the environment as with any other requirement.

To keep the resolution consistent with Conda, PDM uses resolution rules from Conda as good as possible.

Settings overriden

In order to use Conda to install packages some settings were overriden:

• install.parallel if some Conda managed packages are to be uninstalled or updated this option is disabled momentarily.

Development

For development docker-compose files exist in deploy directory, helper script deploy/docker-compose.sh can be used for executing docker.

For running dev environment:

bash deploy/docker-compose.sh -d up

And for productive environment:

bash deploy/docker-compose.sh up