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Catkin_make fails with "ImportError: cannot import name ensure_workspace_marker"

asked 2014-07-01 13:06:33 -0600

mpthompson gravatar image

Under ROS hydro, catkin_make has been working fine for me. However, now when I change to my local workspace and execute catkin_make, I get the following error:

~/catkin_ws $ catkin_make
Traceback (most recent call last):
  File "/opt/ros/hydro/bin/catkin_make", line 15, in <module>
    from catkin.builder import cmake_input_changed
  File "/opt/ros/hydro/lib/python2.7/dist-packages/catkin/", line 61, in <module>
    from catkin_pkg.workspaces import ensure_workspace_marker
ImportError: cannot import name ensure_workspace_marker

A few days ago there was a massive upgrade of packages for ROS hydro which I installed, but I'm not sure if that is related or not.

What might have broken with my ROS installation that is causing this error?

Any help would be appreciated. Thanks.

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answered 2014-07-01 13:49:41 -0600

gvdhoorn gravatar image

updated 2014-07-01 13:50:21 -0600

I'm not sure this is the cause of your issue, but thought I'd report my experiences anyway:

I've seen this error popup on systems that had multiple installations of python-catkin-pkg. Most of the times these systems had the binary debian ánd a from-source version installed (through pip). The pip versions were in /usr/local/lib/python2.7/dist-packages/.., with the debian packaged ones being in /usr/lib/python2.7/dist-packages/.. (note the local).

Manually removing all catkin-pkg related files and directories under /usr/local/lib/.. and reinstalling the python-catkin-pkg got things working again.

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Thank you very much. That is indeed the problem I ran into. The following command worked for me to remove the older version of catkin-pkg that I must have installed at sometime with pip: "sudo pip uninstall catkin-pkg" This allowed the binary debian package to then be found and catkin_make was again happy.

mpthompson gravatar imagempthompson ( 2014-07-01 13:56:16 -0600 )edit

Great. I used pip first, but it didn't succeed in actually removing the package. Manual 'intervention' was my only option :).

gvdhoorn gravatar imagegvdhoorn ( 2014-07-01 14:25:58 -0600 )edit

I did this, but when I try to reinstall python-catkin-pkg using apt-get, no packages are installed as it "is already the newest version". How can I fix this?

RokusO gravatar imageRokusO ( 2014-07-10 18:56:14 -0600 )edit

Are you sure you are RE-installing, not just installing? To reinstall using apt-get: sudo apt-get --reinstall install python-catkin-pkg.

gvdhoorn gravatar imagegvdhoorn ( 2014-07-11 01:46:01 -0600 )edit

Thanks, you're right, I was just installing. However, this didn't help me. I probably had a different problem to begin with. I was stupid enough to actually rm the files you referred to in /usr/local/lib/python2.7/dist-packages. Is there a way to fix that?

RokusO gravatar imageRokusO ( 2014-07-11 13:06:24 -0600 )edit

Just reinstall the packages? Reinstalling should put the files back. Edit: did you remove everything under dist-packages? In that case you'll have to reinstall all python packages. That is probably easier to do with synaptic, but you could do smthing like sudo apt-get --reinstall install python*

gvdhoorn gravatar imagegvdhoorn ( 2014-07-13 01:24:09 -0600 )edit

I tried reinstalling the packages using synaptic and apt-get, but both did not do the trick. Just to try, I installed the packages using pip, and now catkin_make is working again, but now roscore and roslaunch don't work anymore...

RokusO gravatar imageRokusO ( 2014-07-14 09:55:18 -0600 )edit

@RokusO & @liat: I'm afraid I don't have any more advise to give, the above steps fixed everything for me. As a quick-stop measure: remove and then reinstall everything in python related to ROS (catkin-pkg, wstools, etc). Be sure to clean out any /usr/local/.. files you find, then reinstall.

gvdhoorn gravatar imagegvdhoorn ( 2014-07-18 02:03:14 -0600 )edit

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Asked: 2014-07-01 13:06:33 -0600

Seen: 1,712 times

Last updated: Jul 01 '14