Installing psycopg2-binary 2.8.6 complains about missing pg_config

[felfert]

running pip install psycopg2-binary

Produces the following error:

running egg_info
    creating C:\Users\cloudbase-init\AppData\Local\Temp\pip-pip-egg-info-2rqomfrb\psycopg2_binary.egg-info
    writing C:\Users\cloudbase-init\AppData\Local\Temp\pip-pip-egg-info-2rqomfrb\psycopg2_binary.egg-info\PKG-INFO
    writing dependency_links to 
C:\Users\cloudbase-init\AppData\Local\Temp\pip-pip-egg-info-2rqomfrb\psycopg2_binary.egg-info\dependency_links.txt
    writing top-level names to 
C:\Users\cloudbase-init\AppData\Local\Temp\pip-pip-egg-info-2rqomfrb\psycopg2_binary.egg-info\top_level.txt
    writing manifest file 
'C:\Users\cloudbase-init\AppData\Local\Temp\pip-pip-egg-info-2rqomfrb\psycopg2_binary.egg-info\SOURCES.txt'
    
    Error: pg_config executable not found.
    
    pg_config is required to build psycopg2 from source.  Please add the directory
    containing pg_config to the $PATH or specify the full executable path with the
    option:
    
        python setup.py build_ext --pg-config /path/to/pg_config build ...
    
    or with the pg_config option in 'setup.cfg'.
    
    If you prefer to avoid building psycopg2 from source, please install the PyPI
    'psycopg2-binary' package instead.
    

If I'm understanding the doc correctly, that should only happen when installing psycopg2, not psycopg2-binary

Cheers
-Fritz

[dvarrazzo]

What version of Python and pip? What hardware platform is that Windows?

[felfert]

What version of Python and pip? What hardware platform is that Windows?

python 3.9.0 amd64
pip is always the latest, because before using pip, we always run python.exe -m pip install --upgrade pip

In the meantime, i figured, that if I use the direct url to the whl file then it installs fine. Without that, pip just picks up the source instead of the binary.

[dvarrazzo]

python 3.9 is not supported yet on windows: see #1160