procps which is a test dependency is not available on OS X (or any of the BSD's)

[spaghetti-]

Defined here: https://github.com/ros-perception/vision_opencv/blob/indigo/opencv_apps/package.xml#L34

Commited by @k-okada at https://github.com/ros-perception/vision_opencv/commit/99f5a4d61771426dd3a2db35473a2a9aa9105806

I couldn't find any uses for the program in the tests. What exactly is the reason for this change?

Thanks

[k-okada]

humm, I'm very sorry that I can't recall why I added this, #107 is the PR to remove this. I have no knowledge why procps is not available on BSD machine, but you can add dummy entry to rosdep file, for example

procps:
  macports: []

to avoid this type of error

◉ Kei Okada

On Fri, Jan 22, 2016 at 10:33 PM, alex notifications@github.com wrote:

Defined here: https://github.com/ros-perception/vision_opencv/blob/indigo/opencv_apps/package.xml#L34

Commited by @k-okada https://github.com/k-okada at 99f5a4d https://github.com/ros-perception/vision_opencv/commit/99f5a4d61771426dd3a2db35473a2a9aa9105806

I couldn't find any uses for the program in the tests. What exactly is the reason for this change?

Thanks

— Reply to this email directly or view it on GitHub https://github.com/ros-perception/vision_opencv/issues/106.

[spaghetti-]

@k-okada no problem, just ran into this issue and I actually had a PR in progress with the same change, but looks like you've got it. Thanks for the quick change.

[k-okada]

I see, I used this for watch program at https://github.com/ros-perception/vision_opencv/blob/indigo/opencv_apps/test/test-lk_flow.test#L17, periodically update optical flow. What is the equivalent program for OS X?

[spaghetti-]

Homebrew seems to have https://gitlab.com/procps-ng/procps which is essentially the same. Maybe you can revert the merge and I'll submit a PR to rosdistro with this as required for OS X?

[spaghetti-]

However, I do apologize for not doing my research first and going purely based off /proc.

[trainman419]

This showed up on ROS Answers: http://answers.ros.org/question/224956/no-definition-of-procps-for-os-osx/

This does not appear to be fixed; #107 was closed without merging, and nothing was submitted to rosdep.

I think https://github.com/ros-perception/vision_opencv/blob/indigo/opencv_apps/test/test-lk_flow.test#L17 can be better done using respawn="true" and respwan_delay=2 instead of relying on a linux-specific tool.

[acornellier]

I am still having this issue.

ERROR: the following packages/stacks could not have their rosdep keys resolved to system dependencies: opencv_apps: No definition of [procps] for OS [osx]

[acornellier]

I was able to fix it buy removing a line from vision_open_cv/opencv_apps/package.xml:

<test_depend>procps</test_depend>

[vrabaud]

All, what is the best solution ?

[k-okada]

add http://braumeister.org/formula/watch to rosdistro?

[k-okada]

I do not have OSX machine, so need someone who actually test if https://github.com/ros/rosdistro/pull/10360 works

[trainman419]

I think the better solution is to use the options that are already part of roslaunch; instead of introducing an additional dependency. I will submit a pull request.

[trainman419]

Proposed fix which removes the procps dependency and uses roslaunch instead: #109

[vrabaud]

fixed by #109 . Thx @trainman419 !