I don't have Catalina, but just to stimulate ideas, from a quick skim around the net...

https://github.com/flutter/flutter/issues/43713

Solved my problem... Mac OS Catalina change default bash and conda

environment was starting automatically...

I had just comment on .bash_profile lines about initialization."

https://github.com/flutter/flutter/issues/42437

I have solved my above issues by run "conda deactivate" to exist the

Anaconda enviroment. I don't know why, but after I exited the Python anaconda enviroment, then I can run "flutter run" on IOS simulator without any problem.

https://stackoverflow.com/questions/54955154/get-error-attributes-may-not-be...

uninstall and re install xcode and it work like charm"

https://gitlab.phidani.be/Chirag.Patel/clang/commit/aa59bd4807e5129200864cae...

Looks like the error message was deleted a couple of years ago, so maybe a later compiler will help.

cheers -ben

On Tue, 14 Jan 2020 at 18:58, Fabio Niephaus notifications@github.com wrote:

Steps to reproduce:

cd build.macos64x64/squeak.cog.spur make debug

Errors

/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSArray.h:109:12: error: attributes may not be specified on a category @interface NSArray<ObjectType> (NSArrayDiffing) ^ /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSArray.h:196:12: error: attributes may not be specified on a category @interface NSMutableArray<ObjectType> (NSMutableArrayDiffing) ^ In file included from <built-in>:1: In file included from ./../../platforms/iOS/vm/SqueakPureObjc_Prefix.pch:12: In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Cocoa.framework/Headers/Cocoa.h:12: In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Foundation.framework/Headers/Foundation.h:48: In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSKeyValueCoding.h:8: /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSOrderedSet.h:112:12: error: attributes may not be specified on a category @interface NSOrderedSet<ObjectType> (NSOrderedSetDiffing) ^ /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSOrderedSet.h:187:12: error: attributes may not be specified on a category @interface NSMutableOrderedSet<ObjectType> (NSMutableOrderedSetDiffing)

— You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub https://github.com/OpenSmalltalk/opensmalltalk-vm/issues/470?email_source=notifications&email_token=AIJPEW26ZNCNJLVXRJ3G5A3Q5WLD7A5CNFSM4KGQ7762YY3PNVWWK3TUL52HS4DFUVEXG43VMWVGG33NNVSW45C7NFSM4IGARKRQ, or unsubscribe https://github.com/notifications/unsubscribe-auth/AIJPEW4Z25QDQEO3JRR4O33Q5WLD7ANCNFSM4KGQ776Q .