PythonAPI 3.9.4 MacOSx86 dependency conflict

[sgpearse]

(3.9.4) cisl-acworth:~ test$ conda install -c file:///Users/test/channel vapor
Channels:                                                                                                                                                                                                   
 - file:///Users/test/channel                                                                                                                                                                               
 - conda-forge                                                                                                                                                                                              
 - ncar-vapor                                                                                                                                                                                               
 - defaults                                                                                                                                                                                                 
Platform: osx-64                                                                                                                                                                                            
Collecting package metadata (repodata.json): done                                                                                                                                                           
Solving environment: \ warning  libmamba Added empty dependency for problem type SOLVER_RULE_UPDATE                                                                                                         
failed                                                                                                                                                                                                      
                                                                                                                                                                                                            
LibMambaUnsatisfiableError: Encountered problems while solving:                                                                                                                                             
  - package vapor-3.9.4-ha5a8b8e_0 requires python 3.9.*, but none of the providers can be installed                                                                                                        
                                                                                                                                                                                                            
Could not solve for environment specs                                                                                                                                                                       
The following packages are incompatible                                                                                                                                                                     
├─ pin-1 is installable and it requires                                                                                                                                                                     
│  └─ python 3.12.* , which can be installed;                                                                                                                                                               
└─ vapor is not installable because it requires                                                                                                                                                             
   └─ python 3.9.* , which conflicts with any installable versions previously reported.

[sgpearse]

To reproduce:

1. Download the osx-64 installer from this google shared drive
2. place it in ~/channels/osx-64 (Remove all contents beforehand if you've used this channel before)

conda create -n issue3687
conda activate issue3687
conda install conda-build
conda index ~/channel
conda install -c file://Users/<username>/channel vapor

[NihanthCW]

Related to #3688
I did run into similar issues. However, completely removing and reinstalling conda fixed the errors.
I suspect the recent update to conda that I initiated at some point messed things up. The reinstall also fixed the 'solving environment' and long wait time complaint that you mention.