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ros-mobile-robots / diffbot

DiffBot is an autonomous 2wd differential drive robot using ROS Noetic on a Raspberry Pi 4 B. With its SLAMTEC Lidar and the ROS Control hardware interface it's capable of navigating in an environment using the ROS Navigation stack and making use of SLAM algorithms to create maps of unknown environments.
https://ros-mobile-robots.com
BSD 3-Clause "New" or "Revised" License
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Python versions conflict #23

Closed Russ76 closed 3 years ago

Russ76 commented 3 years ago

sudo apt-get install python-catkin-tools Reading package lists... Done Building dependency tree
Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation:

The following packages have unmet dependencies: python-catkin-tools : Depends: python (< 2.8) Depends: python (>= 2.7) Depends: python-catkin-pkg (>= 0.2.9) but it is not installable Depends: python-osrf-pycommon but it is not installable Depends: python:any (>= 2.6.6-7~) E: Unable to correct problems, you have held broken packages.

This is what I see after trying to install Catkin tools. I followed all directions exactly up to this point.

fjp commented 3 years ago

Hi @Russ76 thanks raising this issue. I am sorry about that the docs are not up to date on this. I assumed it would be easier to install catkin-tools in the future when I wrote the docs. However, the current way to do it is using this command:

sudo apt-get install python3-osrf-pycommon python3-catkin-tools

Please see the discussion here. I hope this will be resolved soon - at least the discussion is pretty active, looking at the latest comment.

At least I hope this will solve your issue.

Russ76 commented 3 years ago

Thanks, that's fast! In the "Mate" browser, the web page looked different (your site, not Github), I had to get the URL from my laptop and type that into Mate to get the full number of web pages with more instructions. I don't know what happened.

fjp commented 3 years ago

Yes I need to fix this, the two web pages, fjp.at/projects/diffbot (old) and fjp.at/diffbot are not always up to date with the latest docs in this github repository.

I hope it is possible to add a github action to build the mkdocs automatically everytime a push is made - I'll create a new issue for this.

I will close this issue for now, as I hope the command above solves this issue for now. And I guess in the future the standard way, using the ubuntu package, will also work. But feel free to reopen this issue or add comments below in case it's needed.