Extraterm won’t start on my cygwin/babun
Make sure Python 3 is installed
Extraterm requires Python 3 to be installed in cygwin or Babun to run.
If you are using plain cygwin you can install
python3 via the installer.
If you are Babun you can install Python 3 from a shell using:
pact install python3
You can verify that python3 has been installed and is working correctly by
opening the normal babun shell and running
python3 -V. This should print
the version number of your Python 3.
Extraterm still not starting on Babun
At the time of writing this (July 2017) a fresh install of Babun will have
a broken Python 3 installation. This can be tested for by opening the normal
babun shell and running
python3 -V. If nothing is printed then your
python3 is most likely broken.
- Open up the Windows Explorer.
- Navigate to your Babun installation directory. This is typically in
- Double click to run
update.batin that directory.
This will update the cygwin parts of Babun and fix your installation.
Problems finding the cygwin installation directory
Extraterm tries to find the location of your cygwin installation directory by looking in the Windows registry. If it fails to find anything there then it will look in the default Babun installation directory. If that too fails then Extraterm will fail to start up with an error like: “TypeError: Cannot read property ‘cygwinDir’ of null”.
To explicitly specify where your cygwin installation directory is you can pass the
--cygwinDir option to Extraterm when starting it up: