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Everything is explained in the Wiki (that you did not read thoroughly apparently), including the options to use with catkin_make. Arch Linux uses Python 3 as its default Python version, while ROS still relies on Python 2 (although support is being added). All the ROS packages on Arch are set to use Python 2, but the user still needs to set his environment variables accordingly, and use adequate Python 2 options when required.

Everything is explained in the Wiki (that you did not read thoroughly apparently), including the options to use with catkin_make. Arch Linux uses Python 3 as its default Python version, while ROS still relies on Python 2 (although support is being added). All the ROS packages on Arch are set to use Python 2, but the user still needs to set his environment variables accordingly, and use adequate Python 2 options when required.

I updated the Wiki to make it more clear for users who may not know much about Python 2/Python 3 conflicts.

Everything is explained in the Wiki (that you did not read thoroughly apparently), including the options to use with catkin_make. and the problems you can encounter. Arch Linux uses Python 3 as its default Python version, while ROS still relies on Python 2 (although support is being added). All the ROS packages on Arch are set to use Python 2, but the user still needs to set his environment variables accordingly, and use adequate Python 2 options when required.

required. I updated the Wiki to make it more clear for users who may not know much about Python 2/Python 3 conflicts.