Refactor python binding module structure

- Drop nox cause we only rely on uv and maturin
- Also drop unnessesary optional-dependencies group
- Make ruff & mypy happy
- `slint.{slint => core}`, `slint.{__init__ => api}`

Author: GreyElaina

.github/workflows/ci.yaml

@@ -203,10 +203,11 @@ jobs:
                   python-version: "3.12"
             - name: Install uv
               uses: astral-sh/setup-uv@v7
-            - uses: fjwillemsen/[email protected]
             - name: Run python tests
               working-directory: api/python/slint
-              run: nox --default-venv-backend uv
+              run: uv run pytest tests
+              env:
+                  MATURIN_PEP517_ARGS: --profile=dev
             - name: Run mypy
               working-directory: api/python/slint
               run: uv run mypy -p tests -p slint

api/python/slint/Cargo.toml

@@ -14,6 +14,7 @@ publish = false
 rust-version.workspace = true
 
 [lib]
+name = "core"
 path = "lib.rs"
 crate-type = ["cdylib", "rlib"]
 

api/python/slint/lib.rs

@@ -159,7 +159,7 @@ impl Translator for PyGettextTranslator {
 use pyo3::prelude::*;
 
 #[pymodule(name = "core")]
-fn slint(_py: Python<'_>, m: &Bound<'_, PyModule>) -> PyResult<()> {
+fn slint_core(_py: Python<'_>, m: &Bound<'_, PyModule>) -> PyResult<()> {
     i_slint_backend_selector::with_platform(|_b| {
         // Nothing to do, just make sure a backend was created
         Ok(())

api/python/slint/noxfile.py

@@ -36,9 +36,6 @@ Repository = "https://github.com/slint-ui/slint"
 Changelog = "https://github.com/slint-ui/slint/blob/master/CHANGELOG.md"
 Tracker = "https://github.com/slint-ui/slint/issues"
 
-[project.optional-dependencies]
-dev = ["pytest", "numpy>=2.3.2", "pillow>=11.3.0", "aiohttp>=3.12.15"]
-
 [dependency-groups]
 dev = [
   "mypy>=1.15.0",
@@ -49,11 +46,13 @@ dev = [
   "pillow>=11.3.0",
   "numpy>=2.3.2",
   "aiohttp>=3.12.15",
+  "maturin>=1.9.6",
 ]
 
 [tool.maturin]
 module-name = "slint.core"
 python-packages = ["slint"]
+features = ["pyo3/extension-module"]
 
 [tool.uv]
 # Rebuild package when any rust files change