target python needs to be patched

[tcaduser]

Describe the bug

As discussed in s #929 #905 #901, libb2 needs to be removed, otherwise kivy fails to build. Specifically, it is the target pythons that are failing.

To Reproduce

Most homebrew installations have libb2 installed. When kivy iOS build fails, removing the package fixes the problem:

brew uninstall --ignore-dependencies libb2

Expected behavior

kivy iOS should build without error.

Logs
From #901

[DEBUG   ] ld: building for 'iOS', but linking in dylib (/opt/homebrew/Cellar/libb2/0.98.1/lib/libb2.1.dylib) built for 'macOS'
[DEBUG   ] ld: building for 'iOS', but linking in dylib (/opt/homebrew/Cellar/libb2/0.98.1/lib/libb2.1.dylib) built for 'macOS'
[DEBUG   ] ld: unknown options: -miphoneos-version-min=9.0 -miphoneos-version-min=9.0 -I/Users/jack/Desktop/KivyBuilds/dist/include/iphoneos-arm64/ffi -I/Users/jack/Desktop/KivyBuilds/dist/include/iphoneos-arm64/openssl -I/Users/jack/Desktop/KivyBuilds/dist/include/iphoneos-arm64 --sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS17.4.sdk
[DEBUG   ] clang: error: linker command failed with exit code 1 (use -v to see invocation)
[DEBUG   ] clang: error: linker command failed with exit code 1 (use -v to see invocation)

Additional context

The configure script for target python uses pkg-config to find an install of libb2. Unfortunately, it finds the macOS one:

% pkg-config --libs libb2  
-L/opt/homebrew/Cellar/libb2/0.98.1/lib -lb2

A patch file should be created so that the recipe for python3 so the configure script does not check for libb2.