Add support of source dependencies ( direct references of dependency )

[nichmor]

Problem description

This feature aim to allow to specify source dependencies ( direct reference of a dependency) in pixi.toml

this is how pixi.toml will look like

[pypi-dependencies]
# relative path
numpy = {path = "../numpy_repo"}
# editable install of relative path
numpy = {path = "../numpy_repo", editable = true}

# URLs
tensorflow = {url = "https://mytensorflow.com/tf.tar.gz" }

# reference by branch
boltons = {git = "https://github.com/mahmoud/boltons" ,   branch = "next"}
# reference by rev
boltons = {git = "https://github.com/mahmoud/boltons" ,   rev = "38eb5d3b"}
# reference by tag
boltons = {git = "https://github.com/mahmoud/boltons" ,   tag = "v0.13.2"}
# using subdirectory
boltons = {git = "https://github.com/mahmoud/boltons" ,   subdirectory = "subdir"}
# by ssh
requests = { git = "git@github.com:requests/requests.git" }

CLI commands

also we will extend pixi add command:

pixi add https://github.com/mahmoud/boltons/archive/refs/tags/23.0.0.tar.gz

which should produce this in pixi.toml

[pypi-dependencies]
boltons = {url = "https://github.com/mahmoud/boltons/archive/refs/tags/23.0.0.tar.gz" }

[baszalmstra]

I like it!

Did you also think avout what it would look like in the lock file?

[pavelzw]

We could also let pixi print a warning if it detects python packages (or even arbitrary files?) that were not installed via pixi but for example via pip to make sure that the environment was touched only by pixi.

i.e. make #507 print a warning

[olivier-lacroix]

I know it’s not as “pretty”, but why not have pypi-dependencies follow pep508? This way, they could directly be handed to uv, and could be copied & pasted from existing pyproject.toml

[ruben-arts]

Currently this is in the latest release, except for the pixi add command allowing you to add more source dependencies. Which is now it's own separate issue #1078