[Help] MacOS build fails when deleting temp directory

[jnsh]

Question

Building of a specific program on MacOS fails with following error:

% flet build macos --arch arm64                 
[23:41:59] Created Flutter bootstrap project from gh:flet-dev/flet-build-template with ref "0.27.6" ✅                                      
[23:42:50] Running package command                                                                                                          
           Extra PyPi indexes:                                                                                                              
           Created temp directory: /var/folders/bz/zg7t37x16878w21rhyjhcw3h0000gn/T/serious_python_tempwursku                               
           Copying Python app from /Users/artist/Desktop/code-dir to a temp directory                                           
           Configured Darwin/arm64 platform with sitecustomize.py                                                                           
           Installing  with pip command to /Users/artist/Desktop/code-dir/build/site-packages/arm64                             
           Cleanup installed packages                                                                                                       
           Copying macOS arm64 site-packages                                                                                                
           Copy directory /Users/artist/Desktop/code-dir/build/site-packages/arm64 to                                           
           /Users/artist/Desktop/code-dir/build/site-packages                                                                   
           Merging completed successfully.                                                                                                  
           Creating app archive at /Users/artist/Desktop/code-dir/build/flutter/app/app.zip from a temp directory               
           Writing app archive hash to /Users/artist/Desktop/code-dir/build/flutter/app/app.zip.hash      
           Deleting temp directory                                                                                                          
                                                                                                                                            
           Unhandled exception:                                                                                                             
           PathAccessException: Deletion failed, path = '/var/folders/bz/zg7t37x16878w21rhyjhcw3h0000gn/T/serious_python_tempwursku' (OS    
           Error: Operation not permitted, errno = 1)                                                                                       
           #0      _checkForErrorResponse (dart:io/common.dart:56:9)                                                                        
           #1      _Directory._delete.<anonymous closure> (dart:io/directory_impl.dart:180:7)                                               
           <asynchronous suspension>                                                                                                        
           #2      PackageCommand.run (file:///Users/artist/.pub-cache/hosted/pub.dev/serious_python-0.9.2/bin/package_command.dart:448:9)  
           <asynchronous suspension>                                                                                                        
           #3      CommandRunner.runCommand (package:args/command_runner.dart:212:13)                                                       
           <asynchronous suspension>                                                                                                        
           #4      main (file:///Users/artist/.pub-cache/hosted/pub.dev/serious_python-0.9.2/bin/main.dart:10:3)                            
           <asynchronous suspension>   

Using Flet 0.27.6.
The same code builds on linux.
Building other Flet programs on this same MacOS build environment works fine.

I can not share the failing code unfortunately.

Any help would be greatly appreciated

Code sample

No response

Error message

No response

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• I have searched for answers to my question both in the issues and in previous discussions.

[ap4499]

I haven't seen this before.. is the above log using -vv logging from Flet Build (detailed)? That might help identify which specific operation is failing.

It's odd.. because I think "errno = 1" is permission denied.

Have you previously used this same path (desktop) to create apps and it has worked?

Also, it isn't a long term fix and could create issues of its own - but if it is a permissions error, I think we should be able to confirm it by using the below:

sudo flet build macos

[jnsh]

Thanks for the reply.

Building with sudo was one of the first things we tried, but IIRC it failed with the same error, only the directory path it had no permissions to remove was in different location.

We did not use the -vv flag, but that certainly sounds like good idea to test. I should be able to test again next week, and I'll report back with my findings.