feat: Pyodide 0.28 release (#2487)

* Bump testing version to 0.28.0

* Bump Pyodide constraints

* Add Pyodide 0.28.0 identifier

* Override to a different, alpha version for testing

* Update docs for Pyodide versions everywhere

* Add comment on using older Pyodide alpha version

* Bump to `"cp313*"` for compatibility

* Drop identifier for Pyodide 0.28.0a3

* Add back Pyodide 0.28.0a3 identifier

* Add helpful comment about pyodide-prerelease option

* Fix test and add a comment about it

* Keep one Pyodide version per Python version

* Fix docs for `pyodide-prerelease`; Python ➡️ Pyodide

* Update utils.py

* Drop CI test step for overridden Pyodide version

Suggested-by: Joe Rickerby <joerick@mac.com>

---------

Co-authored-by: Henry Schreiner <HenrySchreinerIII@gmail.com>

.github/workflows/test.yml

@@ -233,19 +233,6 @@ jobs:
       env:
         CIBW_PLATFORM: pyodide
 
-    - name: Run a sample build (GitHub Action) for an overridden Pyodide version
-      uses: ./
-      with:
-        package-dir: sample_proj
-        output-dir: wheelhouse
-        # In case this breaks at any point in time, switch to using the latest version
-        # available or any other version that is not the same as the default one set
-        # in cibuildwheel/resources/build-platforms.toml.
-      env:
-        CIBW_PLATFORM: pyodide
-        CIBW_BUILD: "cp312*"
-        CIBW_PYODIDE_VERSION: "0.27.6"
-
     - name: Run tests with 'CIBW_PLATFORM' set to 'pyodide'
       run: |
         uv run --no-sync ./bin/run_tests.py

cibuildwheel/selector.py

@@ -99,10 +99,17 @@ class BuildSelector:
             return False
         if EnableGroup.GraalPy not in self.enable and fnmatch(build_id, "gp*"):
             return False
-        if EnableGroup.PyodidePrerelease not in self.enable and fnmatch(
+        # TODO: Re-enable this when we have Pyodide prereleases again (e.g., 0.29.0a1+)
-            build_id, "cp313-pyodide_*"
+        # Python 3.13 support became stable in Pyodide 0.28.0, so it no longer needs a prerelease
-        ):
+        # flag.
-            return False
+        # Also update Pyodide tests in unit_test/build_selector_test.py accordingly.
+        # When re-enabling, update the pattern to match the experimental Python version in case
+        # it is bumped to Python 3.14 (likely cp314-pyodide_* but could remain as 3.13 as well).
+        # This depends on the CPython version being used in the Pyodide runtime at the time.
+        # if EnableGroup.PyodidePrerelease not in self.enable and fnmatch(
+        #     build_id, "cp313-pyodide_*"
+        # ):
+        #     return False
 
         should_build = selector_matches(self.build_config, build_id)
         should_skip = selector_matches(self.skip_config, build_id)

docs/options.md

@@ -1288,22 +1288,22 @@ The available Pyodide versions are determined by the version of `pyodide-build`
 
     ```toml
     [tool.cibuildwheel.pyodide]
-    # Build Pyodide wheels using Pyodide version 0.27.6
+    # Build Pyodide wheels using Pyodide version 0.28.0
-    pyodide-version = "0.27.6"
+    pyodide-version = "0.28.0"
 
     [tool.cibuildwheel.pyodide]
-    # Build Pyodide wheels using a specific alpha release
+    # Build Pyodide wheels using a specific, previously released alpha release of 0.28.0
-    pyodide-version = "0.28.0a2"
+    pyodide-version = "0.28.0a3"
     ```
 
 !!! tab examples "Environment variables"
 
     ```yaml
-    # Build Pyodide wheels using Pyodide version 0.27.6
+    # Build Pyodide wheels using Pyodide version 0.28.0
-    CIBW_PYODIDE_VERSION: 0.27.6
+    CIBW_PYODIDE_VERSION: 0.28.0
 
-    # Build Pyodide wheels using a specific alpha release
+    # Build Pyodide wheels using a specific, previously released alpha release of 0.28.0
-    CIBW_PYODIDE_VERSION: 0.28.0a2
+    CIBW_PYODIDE_VERSION: 0.28.0a3
     ```
 
 

docs/platforms.md

@@ -172,7 +172,7 @@ You must target pyodide with `--platform pyodide` (or use `--only` on the identi
 
 It is also possible to target a specific Pyodide version by setting the [`pyodide-version`](options.md#pyodide-version) option to the desired version. Users are responsible for setting an appropriate Pyodide version according to the `pyodide-build` version. A list is available in Pyodide's [cross-build environments metadata file](https://github.com/pyodide/pyodide/blob/main/pyodide-cross-build-environments.json), which can be viewed more easily by installing `pyodide-build` from PyPI and using `pyodide xbuildenv search --all` to see a compatibility table.
 
-If there are pre-releases available for a newer Python version, the `pyodide-prerelease` [`enable`](options.md#enable) can be used to include pre-release versions.
+If there are pre-releases available for a newer Pyodide version, the `pyodide-prerelease` [`enable`](options.md#enable) can be used to include pre-release versions.
 
 ### Running tests
 

test/utils.py

@@ -261,9 +261,7 @@ def _expected_wheels(
         musllinux_versions = ["musllinux_1_2"]
 
     if platform == "pyodide" and python_abi_tags is None:
-        python_abi_tags = ["cp312-cp312"]
+        python_abi_tags = ["cp312-cp312", "cp313-cp313"]
-        if EnableGroup.PyodidePrerelease in enable_groups:
-            python_abi_tags.append("cp313-cp313")
     elif platform == "ios" and python_abi_tags is None:
         python_abi_tags = ["cp313-cp313"]
     elif python_abi_tags is None:

unit_test/build_selector_test.py

@@ -107,7 +107,7 @@ def test_build_filter_pyodide():
         enable=frozenset(),
     )
     assert build_selector("cp312-pyodide_wasm32")
-    assert not build_selector("cp313-pyodide_wasm32")
+    assert build_selector("cp313-pyodide_wasm32")
 
 
 def test_skip():

unit_test/options_test.py

@@ -35,7 +35,7 @@ manylinux-x86_64-image = "manylinux_2_28"
 
 environment-pass = ["EXAMPLE_ENV"]
 
-pyodide-version = "0.27.6"
+pyodide-version = "0.28.0"
 
 [tool.cibuildwheel.macos]
 test-requires = "else"
@@ -92,7 +92,7 @@ def test_options_1(tmp_path, monkeypatch):
     assert local.manylinux_images["x86_64"] == pinned_x86_64_container_image["manylinux_2_34"]
 
     local = options.build_options("cp312-pyodide_wasm32")
-    assert local.pyodide_version == "0.27.6"
+    assert local.pyodide_version == "0.28.0"
 
 
 def test_passthrough(tmp_path, monkeypatch):