Add a `remove` command about pixi

[baszalmstra]

@dhirschfeld I wonder what that would look like in our pixi.toml. When you use pixi remove python it would simply remove python from the [dependencies] (and co) table and then resolve and reinstall the environment.

The pixi.toml defines the source of truth, not the cli. You can always recreate the exact same environment from it (especially with a lockfile). So if you want to only install the dependencies of a certain package that should be specified in the pixi.toml. (Thats currently not supported).

If I read the usecase specified in the issues correctly I think you want to override a dependency of a project to be able to use a development version. We will most likely support this by overriding the source of a dependency:

my_dependency = { git = "some git repo URL" }
# or
my_dependency = { path = "../path_to_other_project" }
# or
my_dependency = { package = "my_dependency.conda" }

Doing this should be available through the pixi CLI but it will just update the pixi.toml file so that that file always contains the "truth".

Note

This is all still future talk!

[Wackyator]

can this be assigned to me

[dhirschfeld]

Note: It can be incredibly useful to be able to remove a package without removing any of it's dependencies. conda implements this with the --force flag which will then only remove the specified package from the environment.

Discussion in:

• mamba-org/mamba#412
• mamba-org/mamba#1523

[wolfv]

Mamba and conda also have a --no-deps and --only-deps flag. We could add that in pixi.toml

[ruben-arts]

This feature depends on the removing functionality described in #77

[dhirschfeld]

Being able to tell the resolver to completely ignore a required dependency (i.e. assume a compatible version is already installed) would be more in line with what I was thinking - e.g. something like:

my_dependency = "ignore"

This can also be invaluable when the dependencies are mis-specified but you need to install it regardless. With conda you can do that by installing the .tar.bz2 directly which can be a useful escape-hatch.

[goyalyashpal]

self hide as offtopic

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Note

This is all still future talk!

so, github gave green flag to this feature, wow....