How to fix PIP Install error: subprocess-exited-with-error

error: subprocess-exited-with-error

Example:

% pip install tts

            INFO:
            ########### EXT COMPILER OPTIMIZATION ###########
            INFO: Platform      :
              Architecture: unsupported
              Compiler    : clang
      
            CPU baseline  :
              Requested   : optimization disabled
              Enabled     : none
              Flags       : none
              Extra checks: none
              Requested   : optimization disabled
      
            CPU dispatch  :
              Enabled     : none
              Generated   : none
            INFO: CCompilerOpt.cache_flush[817] : write cache to path -> /private/var/folders/k6/9fyd0vd51mz67d9jtp6mh7400000gn/T/pip-install-n0o9xg31/numpy_20771321dc8e40ec9b9230fbdd8d12fa/build/temp.macosx-10.9-universal2-3.11/ccompiler_opt_cache_ext.py
            INFO:
            ########### CLIB COMPILER OPTIMIZATION ###########
            INFO: Platform      :
              Architecture: unsupported
              Compiler    : clang
      
            CPU baseline  :
              Requested   : optimization disabled
              Enabled     : none
              Flags       : none
              Extra checks: none
              Requested   : optimization disabled
      
            CPU dispatch  :
              Enabled     : none
              Generated   : none
            INFO: CCompilerOpt.cache_flush[817] : write cache to path -> /private/var/folders/k6/9fyd0vd51mz67d9jtp6mh7400000gn/T/pip-install-n0o9xg31/numpy_20771321dc8e40ec9b9230fbdd8d12fa/build/temp.macosx-10.9-universal2-3.11/ccompiler_opt_cache_clib.py
            [end of output]
      
        note: This error originates from a subprocess, and is likely not a problem with pip.
        ERROR: Failed building wheel for numpy
      Failed to build numpy
      ERROR: Could not build wheels for numpy, which is required to install pyproject.toml-based projects
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
error: subprocess-exited-with-error

× pip subprocess to install build dependencies did not run successfully.
│ exit code: 1
╰─> See above for output.

note: This error originates from a subprocess, and is likely not a problem with pip.

If you are trying to install a package using the pip install command and you get an error subprocess-exited-with-error then it could be because of the following reasons.

Reasons and Fixes:

1. Make sure that the subprocess does not contain syntax errors.
2. Make sure the references are not non-existent files or paths.
3. Make sure you have the required permissions to execute the sub-process.
4. Make sure that the package you are trying to install is supported by your operating system (Windows/Linux/macOS)
5. Make sure that if there are any external dependencies needed for the subprocess is missing.