feat(list): add a flag to only list local packages

[IamPhytan]

Description

Provide a way to list only packages that are part of a Pixi workspace.

$ pixi list
Name                               Version          Build                          Size  Kind   Source
_libgcc_mutex                      0.1              conda_forge                2.50 KiB  conda  https://prefix.dev/conda-forge
...
zstd                               1.5.7            hb78ec9c_6               587.28 KiB  conda  https://prefix.dev/conda-forge

$ pixi list --local
Error:   × No local packages found in 'default' environment for 'linux-64' platform.

$ pixi list -w my-pixi-workspace
Name               Version    Build                        Size  Kind   Source
_openmp_mutex      4.5        20_gnu                  28.27 KiB  conda  https://conda.anaconda.org/conda-forge
bzip2              1.0.8      hda65f42_9             254.08 KiB  conda  https://conda.anaconda.org/conda-forge
ca-certificates    2026.4.22  hbd8a1cb_0             127.97 KiB  conda  https://conda.anaconda.org/conda-forge
ld_impl_linux-64   2.45.1     default_hbd61a6d_102   710.94 KiB  conda  https://conda.anaconda.org/conda-forge
libexpat           2.8.0      hecca717_0              75.43 KiB  conda  https://conda.anaconda.org/conda-forge
libffi             3.5.2      h3435931_0              57.22 KiB  conda  https://conda.anaconda.org/conda-forge
libgcc             15.2.0     he0feb66_18           1017.37 KiB  conda  https://conda.anaconda.org/conda-forge
libgomp            15.2.0     he0feb66_18            589.12 KiB  conda  https://conda.anaconda.org/conda-forge
liblzma            5.8.3      hb03c661_0             110.82 KiB  conda  https://conda.anaconda.org/conda-forge
libmpdec           4.0.0      hb03c661_1              90.23 KiB  conda  https://conda.anaconda.org/conda-forge
libsqlite          3.53.1     h0c1763c_0             932.58 KiB  conda  https://conda.anaconda.org/conda-forge
libstdcxx          15.2.0     h934c35e_18              5.58 MiB  conda  https://conda.anaconda.org/conda-forge
libuuid            2.42       h5347b49_0              39.35 KiB  conda  https://conda.anaconda.org/conda-forge
libzlib            1.3.2      h25fd6f3_2              62.14 KiB  conda  https://conda.anaconda.org/conda-forge
my_cpp_package     0.1.0      hb0f4dca_0                         conda  packages/my_cpp_package
my_python_package  0.1.0      pyh4616a5c_0                       conda  packages/my_python_package
ncurses            6.6        hdb14827_0             897.42 KiB  conda  https://conda.anaconda.org/conda-forge
numpy              2.4.4                              53.90 MiB  pypi   https://pypi.org/simple
openssl            3.6.2      h35e630c_0               3.02 MiB  conda  https://conda.anaconda.org/conda-forge
python             3.14.4     habeac84_100_cp314      35.01 MiB  conda  https://conda.anaconda.org/conda-forge
python_abi         3.14       8_cp314                  6.83 KiB  conda  https://conda.anaconda.org/conda-forge
readline           8.3        h853b02a_0             336.99 KiB  conda  https://conda.anaconda.org/conda-forge
tk                 8.6.13     noxft_h366c992_103       3.15 MiB  conda  https://conda.anaconda.org/conda-forge
tzdata             2025c      hc9c84f9_1             116.34 KiB  conda  https://conda.anaconda.org/conda-forge
zstd               1.5.7      hb78ec9c_6             587.28 KiB  conda  https://conda.anaconda.org/conda-forge

$ pixi list -w my-pixi-workspace --local
Name               Version  Build         Size  Kind   Source
my_cpp_package     0.1.0    hb0f4dca_0          conda  packages/my_cpp_package
my_python_package  0.1.0    pyh4616a5c_0        conda  packages/my_python_package

$ pixi list -w empty_workspace
Error:   × No packages found in 'default' environment for 'linux-64' platform.

$ pixi list -w empty_workspace --local 
Error:   × No local packages found in 'default' environment for 'linux-64' platform.

How Has This Been Tested?

Ran pixi run lint and pixi run test
Used the built pixi binary to test the behavior on different workspaces (as visible above)

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation

[baszalmstra]

We also already have --explicit what does --local mean? You now check that the size == None but that can also be true for binary conda packages or pypi packages.

[IamPhytan]

Hi @baszalmstra

We also already have --explicit what does --local mean?

If I understand correctly, explicit shows all the dependencies that are explicitly listed in pixi.toml. I wanted to implement a flag to only list the packages that are part of a workspace, with a local path.

You now check that the size == None but that can also be true for binary conda packages or pypi packages.

Fair, while trying to implement, I found out that checking size == None was working because of the implementation of Package:

https://github.com/prefix-dev/pixi/blob/main/crates/pixi_api/src/workspace/list/package.rs#L71-L115

But probably there is a better way to do it, either in the package discovery, or while scraping the content of the workspace's pixi.toml ?

Thanks for the feedback !