Equivalent of conda entry points in pixi.toml when using pixi build

[EugenePlanteurCS]

Hello, I'm working on converting a project from conda to pixi. Everything works out so far, but we want to still be able to build a conda package, that way users can choose either to conda install or clone the repo and run pixi install. This project is only supposed to be used as a CLI tool, using entry points. When using pixi, we can just convert them to pixi tasks, but what about when building a conda package ?

Let's take a simple example project:

my_project
├── src
│   └── main.py
├── .gitignore
├── pixi.toml
└── meta.yaml

For example, meta.yaml could contain:

package:
  name: my_package
  version: 0.1.0

source:
  git_url: https://github.com/my_package
  git_rev: main

build:
    entry_points:
      - start = src.main:main
# ...

We can run conda build meta.yaml to build the corresponding conda package. Once installed in an evironment, one can use start to execute the main.py file.

The equivalent pixi.toml could look like this:

[project]
channels = ["conda-forge", "https://prefix.dev/pixi-build-backends"]
description = "Add a short description here"
name = "my_package"
platforms = ["linux-64"]
version = "0.1.0"
preview = ["pixi-build"]

[package]
name = "iota2_develop"
version = "20250325"

[package.build]
backend = { name = "pixi-build-python", version = "0.1.*" }

[tasks]
"start" = "python $PIXI_PROJECT_ROOT/src/main.py"
# ...

In this case, we can then use pixi run start when installing it with pixi install. But if we use pixi build and install this package in a separate conda environment, there isn't really a "clean" way to call main.py. The easiest method would be to clone the project and run python my_project/src/main.py. I tried using the solution from this discussion, but I get the following error:

Error:   × Unexpected keys, expected only 'name', 'version', 'description', 'authors', 'channels', 'channel-priority', 'platforms', 'license', 'license-file', 'readme', 'homepage', 'repository',  'documentation', 'conda-pypi-map', 'pypi-options', 's3-options', 'preview', 'target', 'build-variants'
    ╭─[.../my_project/pixi.toml:70:10]
 69 │ 
 70 │ [project.scripts]
    ·          ───┬───
    ·             ╰── 'scripts' was not expected here
 71 │ pkg_cli = "src.main:main"
    ╰────
  help: Did you mean 'description'?

So I'm guessing this section is only available for project.toml files, and not pixi.toml ? In any case, is there a "clean" way to implement entry points in the pixi.toml, when using pixi build ? I understand that pixi build is still heavily in development, so maybe this is something that will be added later?

Thanks !