opencv-python-headless continues to be installed despite meeting MIN_OPENCV_VERSION with opencv-python about albumentations

[elvintoh82]

Feeling adventurous, I tried to follow the original sequence. opencv-python then albumentations then ADDED a new line of uninstalling opencv-python-headless.

FROM ros:humble-ros-base
RUN apt-get update && apt-get install -y python3-pip
RUN pip install --upgrade pip
RUN pip install opencv-python==4.9.0.80
RUN pip install albumentations --no-binary albumentations
RUN pip uninstall opencv-python-headless

There were no errors during the uninstallation of headless. I then went into python to do some basic test of cv2.
import cv2 yields no error, but it is already damaged when I tried to print cv2.version (no such attribute), file shows empty. And some other basic functions shows problems as well.

[elvintoh82]

@Zeli0

[ternaus]

I am not really an expert on how pip handles depencencies, especially dynamic ones.

If someone knows how to do it better - would be great.

First issue that I see is that

pip install albumentations --no-binary albumentations

Does not behave as expected and! We do not have a check in CI/CD to check for that.

Second is that overall dynamic dependencies do not work as expected.

@elvintoh82

Does this work if write it like

RUN pip install opencv-python==4.9.0.80
RUN pip install albumentations --no-binary albumentations

I.e. switch lines?

[elvintoh82]

I am not really an expert on how pip handles depencencies, especially dynamic ones.

If someone knows how to do it better - would be great.

First issue that I see is that

pip install albumentations --no-binary albumentations

Does not behave as expected and! We do not have a check in CI/CD to check for that.

Second is that overall dynamic dependencies do not work as expected.

@elvintoh82

Does this work if write it like

RUN pip install opencv-python==4.9.0.80
RUN pip install albumentations --no-binary albumentations

I.e. switch lines?

Hi, did you instead mean run the installation of albumentations first, followed by installation of opencv-python?
I'll do a quick try now.

[elvintoh82]

I've tried reversing the sequence as stated above. pip installation of albumentations followed by opencv-python does not show any errors. But inside python, importing cv2 immediately breaks.

[ternaus]

What about

FROM ros:humble-ros-base
RUN apt-get update && apt-get install -y python3-pip
RUN pip install --upgrade pip
RUN pip uninstall opencv-python opencv-python-headless
RUN pip install albumentations --no-binary albumentations
RUN pip install opencv-python==4.9.0.80

Could ros:humble-ros-base has opencv opencv-heasdless being already instsalled so that is messes with the installation

[elvintoh82]

What about

FROM ros:humble-ros-base
RUN apt-get update && apt-get install -y python3-pip
RUN pip install --upgrade pip
RUN pip uninstall opencv-python opencv-python-headless
RUN pip install albumentations --no-binary albumentations
RUN pip install opencv-python==4.9.0.80

Could ros:humble-ros-base has opencv opencv-heasdless being already instsalled so that is messes with the installation

just did a quick check and no opencv exists under ros:humble-ros-base. Not even under "apt install"