Add compatibility tag handling for iOS.

Author: freakboy3742

src/pip/_internal/utils/compatibility_tags.py

@@ -13,9 +13,10 @@
     interpreter_name,
     interpreter_version,
     mac_platforms,
+    ios_platforms,
 )
 
-_osx_arch_pat = re.compile(r"(.+)_(\d+)_(\d+)_(.+)")
+_apple_arch_pat = re.compile(r"(.+)_(\d+)_(\d+)_(.+)")
 
 
 def version_info_to_nodot(version_info: Tuple[int, ...]) -> str:
@@ -24,7 +25,7 @@ def version_info_to_nodot(version_info: Tuple[int, ...]) -> str:
 
 
 def _mac_platforms(arch: str) -> List[str]:
-    match = _osx_arch_pat.match(arch)
+    match = _apple_arch_pat.match(arch)
     if match:
         name, major, minor, actual_arch = match.groups()
         mac_version = (int(major), int(minor))
@@ -43,6 +44,26 @@ def _mac_platforms(arch: str) -> List[str]:
     return arches
 
 
+def _ios_platforms(arch: str) -> List[str]:
+    match = _apple_arch_pat.match(arch)
+    if match:
+        name, major, minor, actual_multiarch = match.groups()
+        ios_version = (int(major), int(minor))
+        arches = [
+            # Since we have always only checked that the platform starts
+            # with "ios", for backwards-compatibility we extract the
+            # actual prefix provided by the user in case they provided
+            # something like "ioscustom_". It may be good to remove
+            # this as undocumented or deprecate it in the future.
+            "{}_{}".format(name, arch[len("ios_") :])
+            for arch in ios_platforms(ios_version, actual_multiarch)
+        ]
+    else:
+        # arch pattern didn't match (?!)
+        arches = [arch]
+    return arches
+
+
 def _custom_manylinux_platforms(arch: str) -> List[str]:
     arches = [arch]
     arch_prefix, arch_sep, arch_suffix = arch.partition("_")
@@ -68,6 +89,8 @@ def _get_custom_platforms(arch: str) -> List[str]:
     arch_prefix, arch_sep, arch_suffix = arch.partition("_")
     if arch.startswith("macosx"):
         arches = _mac_platforms(arch)
+    elif arch.startswith("ios"):
+        arches = _ios_platforms(arch)
     elif arch_prefix in ["manylinux2014", "manylinux2010"]:
         arches = _custom_manylinux_platforms(arch)
     else:

tests/unit/test_models_wheel.py

@@ -148,6 +148,28 @@ def test_not_supported_multiarch_darwin(self) -> None:
         assert not w.supported(tags=intel)
         assert not w.supported(tags=universal)
 
+    def test_supported_ios_version(self) -> None:
+        """
+        Wheels build for iOS 12.3 are supported on iOS 15.1
+        """
+        tags = compatibility_tags.get_supported(
+            "313", platforms=["ios_15_1_arm64_iphoneos"], impl="cp"
+        )
+        w = Wheel("simple-0.1-cp313-none-ios_12_3_arm64_iphoneos.whl")
+        assert w.supported(tags=tags)
+        w = Wheel("simple-0.1-cp313-none-ios_15_1_arm64_iphoneos.whl")
+        assert w.supported(tags=tags)
+
+    def test_not_supported_ios_version(self) -> None:
+        """
+        Wheels built for macOS 15.1 are not supported on 12.3
+        """
+        tags = compatibility_tags.get_supported(
+            "313", platforms=["ios_12_3_arm64_iphoneos"], impl="cp"
+        )
+        w = Wheel("simple-0.1-cp313-none-ios_15_1_arm64_iphoneos.whl")
+        assert not w.supported(tags=tags)
+
     def test_support_index_min(self) -> None:
         """
         Test results from `support_index_min`