These instructions above will likely apply to other non-standard version of python on Cygwin although I have only tested Python37. The same goes for python37-pip: ln -s /usr/bin/pip3.7 /usr/bin/pip3 However, as its not recommended to have two versions of python3 installed at the same time, you can simply create the executable python3 as follows to correct this: ln -s /usr/bin/python3.7 /usr/bin/python3 I would guess that the Cygwin dev's wanted to allow two versions of python3 to be installed at the same time. That should have also have re-installed all the setuptools dependencies with the latest updates.įrom now on, do yourself a favor and start using a virtual environment.The python37 packages will install correctly but will create an executable called python3.7 instead of python3 which can be confusing. Pip3 install -U -force-reinstall -only-binary=:all: -no-clean -no-cache-dir setuptools # python3-appdirs, python3-packaging, python3-pyparsing, python3-six # That also installs the Cygwin packages: # Fix pip3 symlink (or just pip if you don't have python2) Then I re-installed the only one needed: python3-setuptools.

So what I did, was clear out all python3 related Cygwin packages, except the Python3 itself. Check with: cygcheck.exe -c |grep Incomplete.ĭo not re-install those packages with Cygwin. That is because pip has replaced/updated the files in that package. Example: install package twine for uploading your own PyPI packages: python3.8 -m pip install twine. will respond like: pip 19.2.3 from /usr/lib/python3.8/site-packages/pip (python 3.8) Note that it’s under /usr/lib and not a /cygdrive path to a regular Windows Python install. From then on, only use the pip installer.Īfter you have installed or updated any python3 packages using pip, your Cygwin package manager will complain that your package is 'Incomplete'. Verify from Cygwin Terminal: python3.8 -m pip -version. When installing and using Python3 on Cygwin (and probably on most other *nix distros), only install the basic Python3 interpreter as a Cygwin package. There are several forks of apt-cyg, but the best maintained is that of kou1okada, you'll love it.īecause I started out not using virtualenv, I recently had to refresh my Cygwin Python3 installation, and realized a few things in the process that should have been obvious, but can easily be forgotten. Pip 9.0.1 from /usr/lib/python3.4/site-packages (python 3.4)īTW. # If you don't have Python3 already, use apt-cyg:

Since OP specifically talks about Python3, I think we need to specify that just in case the user already have Python2 installed, which is very likely.

Pip cygwin python 3