Fix pyobjc-core XCode version check.

ronaldoussoren/pyobjc#569 (comment)

patches/pyobjc-core-xcode-version-check.patch

@@ -0,0 +1,46 @@
+commit 58ab8df6a0548fb070080f39ded837658823312f
+Author: Catalin Patulea <[email protected]>
+Date:   Sat Jan 13 10:15:52 2024 +0200
+
+    Fix XCode version check with only CommandLineTools.
+
+    https://github.com/ronaldoussoren/pyobjc/issues/569#issuecomment-1880015695
+
+diff --git a/pyobjc-core/setup.py b/pyobjc-core/setup.py
+index ecd3934..cde5621 100644
+--- a/pyobjc-core/setup.py
++++ b/pyobjc-core/setup.py
+@@ -594,15 +594,24 @@ class oc_build_ext(build_ext.build_ext):
+                 CFLAGS.append("-DNO_OBJC2_RUNTIME")
+                 EXT_CFLAGS.append("-DNO_OBJC2_RUNTIME")
+
+-        lines = subprocess.check_output(
+-            ["xcodebuild", "-version"], text=True
+-        ).splitlines()
+-        if lines[0].startswith("Xcode"):
+-            xcode_vers = int(lines[0].split()[-1].split(".")[0])
+-            if xcode_vers >= 15:
+-                for var in (OBJC_LDFLAGS,):
+-                    print("Use old linker with Xcode 15 or later")
+-                    var.append("-Wl,-ld_classic")
++        xcode_vers = None
++        try:
++            lines = subprocess.check_output(
++                ["xcodebuild", "-version"], text=True
++            ).splitlines()
++            if lines[0].startswith("Xcode"):
++                xcode_vers = int(lines[0].split()[-1].split(".")[0])
++        except subprocess.CalledProcessError:
++            lines = subprocess.check_output(
++                ["pkgutil", "--pkg-info=com.apple.pkg.CLTools_Executables"],
++                text=True).splitlines()
++            version, = [l.split()[1] for l in lines
++                if l.startswith('version: ')]
++            xcode_vers = int(version.split(".")[0])
++        if xcode_vers >= 15:
++            for var in (OBJC_LDFLAGS,):
++                print("Use old linker with Xcode 15 or later")
++                var.append("-Wl,-ld_classic")
+
+     def run(self):
+         verify_platform()

xpra-python3.modules

@@ -630,6 +630,7 @@
 			hash="sha256:3dd0a7b3acd7e0b8ffd3f5331b29a3aaebe79a03323e61efeece38627a6020b3"
 			version="10.0">
 			<patch file="pyobjc-unused-parameter.patch" strip="1"/>
+			<patch file="pyobjc-core-xcode-version-check.patch" strip="2"/>
 		</branch>
 		<dependencies>
 			<dep package="python3"/>