Support multiple constraints pypi dependencies

[ZhengYu, Xu]

Checks

• I have checked that this issue has not already been reported.

• I have confirmed this bug exists on the latest version of pixi, using pixi --version.

Reproducible example

# pyproject.toml
[project]
authors = [{ name = "ZhengYu, Xu", email = "[e-mail]" }]
description = "Add a short description here"
name = "playground"
requires-python = ">=3.7,<3.12"
version = "0.1.0"
dependencies = [
    'pyarrow >=11.0.0; python_version >= "3.7" and python_version < "3.8"',
    'pyarrow ==16.1.0; python_version >= "3.8" and python_version < "3.12"',
]

[tool.pixi.project]
channels = ["conda-forge"]
platforms = ["osx-64"]

[tool.pixi.feature.py311.dependencies]
python = "3.11.*"

[tool.pixi.feature.py37.dependencies]
python = "3.7.*"

[tool.pixi.tasks]

[tool.pixi.environments]
default = { features = ["py311"], solve-group = "py311" }
py311 = { features = ["py311"], solve-group = "py311" }
py37 = { features = ["py37"], solve-group = "py37" }

Issue description

I am installing different versions of pyarrow by restricting the python_version, but it seems that pixi fail to resolve it.

Expected behavior

Correctly resolve the dependencies.

[ZhengYu, Xu]

pixi/crates/pixi_manifest/src/pyproject.rs

Lines 268 to 273 in b117b6a

 // Add pyproject dependencies as pypi dependencies 
 if let Some(deps) = item.project().and_then(|p| p.dependencies.clone()) { 
     for requirement in deps.iter() { 
         target.add_pypi_dependency(requirement, None); 
     } 
 } 

pixi/crates/pixi_manifest/src/target.rs

Lines 219 to 237 in b117b6a

 pub fn add_pypi_dependency( 
     &mut self, 
     requirement: &pep508_rs::Requirement, 
     editable: Option<bool>, 
 ) { 
     // TODO: add proper error handling for this 
     let mut pypi_requirement = PyPiRequirement::try_from(requirement.clone()) 
         .expect("could not convert pep508 requirement"); 
     if let Some(editable) = editable { 
         pypi_requirement.set_editable(editable); 
     } 
  
     self.pypi_dependencies 
         .get_or_insert_with(Default::default) 
         .insert( 
             PyPiPackageName::from_normalized(requirement.name.clone()), 
             pypi_requirement, 
         ); 
 } 

pixi/crates/pixi_manifest/src/pypi/pypi_requirement.rs

Lines 34 to 38 in b117b6a

 Version { 
     version: VersionOrStar, 
     #[serde(default)] 
     extras: Vec<ExtraName>, 
 }, 

It seems that pixi only considers the package version and extras in pyproject dependency.

[ZhengYu, Xu]

I think pixi.pypi-dependencies should support multiple constraints dependencies like Poetry does

[Ruben Arts]

Indeed, we have to add env marker support.