feat: initial support for riscv64 (#2366)

* feat: initial support for riscv64

* use enable for riscv64

* Apply review suggestion

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

* update documentation

---------

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

unit_test/build_selector_test.py

@@ -158,6 +158,15 @@ def test_build_free_threaded_python():
     assert build_selector("cp313t-manylinux_x86_64")
 
 
+def test_build_riscv64_enable():
+    build_selector = BuildSelector(build_config="*", skip_config="")
+    assert not build_selector("cp313-manylinux_riscv64")
+    build_selector = BuildSelector(
+        build_config="*", skip_config="", enable=frozenset([EnableGroup.CPythonExperimentalRiscV64])
+    )
+    assert build_selector("cp313-manylinux_riscv64")
+
+
 def test_testing_selector():
     # local import to avoid pytest trying to collect this as a test class!
     from cibuildwheel.selector import TestSelector

unit_test/main_tests/main_platform_test.py

@@ -179,6 +179,7 @@ def test_archs_platform_all(platform, intercepted_build_args, monkeypatch):
             Architecture.ppc64le,
             Architecture.s390x,
             Architecture.armv7l,
+            Architecture.riscv64,
         }
     elif platform == "windows":
         assert options.globals.architectures == {

unit_test/oci_container_test.py

@@ -552,7 +552,7 @@ def test_local_image(
         # both GHA & local macOS arm64 podman desktop are failing
         pytest.xfail("podman fails with armv7l images")
 
-    remote_image = "debian:12-slim"
+    remote_image = "debian:trixie-slim"
     platform_name = platform.value.replace("/", "_")
     local_image = f"cibw_{container_engine.name}_{platform_name}_local:latest"
     dockerfile = tmp_path / "Dockerfile"
@@ -582,7 +582,7 @@ def test_multiarch_image(container_engine, platform):
         # both GHA & local macOS arm64 podman desktop are failing
         pytest.xfail("podman fails with armv7l images")
     with OCIContainer(
-        engine=container_engine, image="debian:12-slim", oci_platform=platform
+        engine=container_engine, image="debian:trixie-slim", oci_platform=platform
     ) as container:
         output = container.call(["uname", "-m"], capture_output=True)
         output_map_kernel = {
@@ -591,6 +591,7 @@ def test_multiarch_image(container_engine, platform):
             OCIPlatform.ARMV7: ("armv7l", "armv8l"),
             OCIPlatform.ARM64: ("aarch64",),
             OCIPlatform.PPC64LE: ("ppc64le",),
+            OCIPlatform.RISCV64: ("riscv64",),
             OCIPlatform.S390X: ("s390x",),
         }
         assert output.strip() in output_map_kernel[platform]
@@ -601,6 +602,7 @@ def test_multiarch_image(container_engine, platform):
             OCIPlatform.ARMV7: "armhf",
             OCIPlatform.ARM64: "arm64",
             OCIPlatform.PPC64LE: "ppc64el",
+            OCIPlatform.RISCV64: "riscv64",
             OCIPlatform.S390X: "s390x",
         }
         assert output_map_dpkg[platform] == output.strip()