[Python] Why is pyproject-build.exe not on PATH in Anaconda, and how can I ensure both .tar.gz...

I am trying to package a Python project using py -m build within an Anaconda environment. However, I noticed that only the .tar.gz source distribution is being created, and the .whl (wheel) distribution is missing.

This is the exact error:

ERROR Backend subprocess exited when trying to invoke build_wheel


While troubleshooting, I discovered that the script pyproject-build.exe is located in the Scripts folder of my Anaconda installation (Anaconda3/Scripts), which is not included in my system's PATH.

Steps I've Taken:

1. 
   Verified that build is installed:
   
   python3 -m pip install --upgrade pip
2. 
   Checked the Scripts folder location mentioned in the upgrade warning message.
   
   
3. 
   Tried running:
   
   py -m build
   
   
   This successfully creates the .tar.gz file in the dist directory but does not generate the .whl file.
   

Questions:

1. 
   How can I add the Scripts directory to my PATH so that pyproject-build.exe is recognized?
   
   
2. 
   What steps should I take to ensure that both .tar.gz and .whl distributions are created when running py -m build?
   
   
3. 
   Are there additional dependencies or configurations in the pyproject.toml file that I should check?
   

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