[BUG] pip install picamera2 ignores NOGUI flag

[magsol]

Describe the bug
When trying to install picamera2 via pip without GUI components, I entered the command exactly as indicated in the instructions:

NOGUI=1 pip install picamera2

but the procedure still tries to install PyQt5, which results in the entire process hanging and being killed by the OS.

Collecting PyQt5
  Using cached PyQt5-5.15.7.tar.gz (3.2 MB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Preparing metadata (pyproject.toml) ... \ Killed

which means picamera2 is never installed.

To Reproduce
See above.

Expected behaviour
I'd expect PyQt5 not to be installed at all, given the presence of the NOGUI=1 flag.

Console Output, Screenshots

Hardware :
I am using a Raspberry Pi 3B+ with a Camera Module V2 NoIR attached. I'm running Debian GNU/Linux 11 (bullseye) aarch64.

Additional context
I don't know if this is relevant, but you'll notice from the screenshot that I have set up a conda/mamba environment (micromamba, specifically). The only relevant packages installed via conda that are being used in the picamera2 installation process are python, pip, and numpy; everything else was pip or apt installed as per the instructions. I don't know if this could potentially cause conflicts--the one in particular I'm concerned with is the fact that OpenCV was installed via apt, but can be imported in the base environment without issues--but I don't really see how it would cause the wheels to ignore the NOGUI flag.

I saw that #124 seemed to have done exactly this in making PyQt optional, but I can't seem to get that behavior to work.

[magsol]

(best guess on why the process is being killed: out of memory)

[d-weber]

Same here, did try to install pyqt5 alone but no luck, it ran out of memory on RPI 4

[magsol]

@d-weber Same and same. Would love to bypass PyQt altogether.

[magsol]

This makes absolutely no sense to me considering this line seems to evaluate the NOGUI variable correctly https://github.com/raspberrypi/picamera2/blob/main/setup.py#L12

> export NOGUI="1"
> python -c "import os; print(os.getenv('NOGUI', '0') == '1');"
True

but then I run

> NOGUI=1 pip install picamera2
Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple
Collecting picamera2
  Using cached https://www.piwheels.org/simple/picamera2/picamera2-0.2.2-py3-none-any.whl (50 kB)
Collecting PyQt5
  Using cached PyQt5-5.15.7.tar.gz (3.2 MB)

It shouldn't be picking up PyQt5, but it is.

[chrisruk]

Thanks for reporting this, which I can also replicate. I've had a look into it and it seems due to wheel files (.whl) not actually executing/containing the code from setup.py. I'll look into ways to fix this.

[jack-solomomo]

I think a quick way around this is to install the dependencies directly and then install picamera2 with the --no-deps pip flag. This is working for me (RPi4, raspberry pi os bullseye, connected via ssh and capturing images to file).

pip install PiDNG piexif pillow simplejpeg v4l2-python3 python-prctl
pip install --no-deps picamera2

[magsol]

I spent more time than I care to admit yesterday figuring out which of these packages are on conda-forge (piexif, pillow, and simplejpeg), but yeah that’s exactly what I ended up doing and it works perfectly on my raspberry pi 3b+.

On Thu, Jun 30, 2022 at 18:13 jack-solomomo ***@***.***> wrote: I think a quick way around this is to install the dependencies directly and then install picamera2 with the --no-deps pip flag. This is working for me (RPi4, raspberry pi os bullseye, connected via ssh and capturing images to file). pip install PiDNG piexif pillow simplejpeg v4l2-python3 python-prctl pip install --no-deps picamera2 — Reply to this email directly, view it on GitHub <#184 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AABBB6IE2ANFCHKJFXBMEN3VRYLYNANCNFSM52DD2JRA> . You are receiving this because you authored the thread.Message ID: ***@***.***>

-- iPhone’d

[UcefMountacer]

I think a quick way around this is to install the dependencies directly and then install picamera2 with the --no-deps pip flag. This is working for me (RPi4, raspberry pi os bullseye, connected via ssh and capturing images to file).

pip install PiDNG piexif pillow simplejpeg v4l2-python3 python-prctl
pip install --no-deps picamera2

thanks, this worked for no GUI installation

(Bullseye, RPI 4, 64 bits)

[davidplowman]

I've posted a new release of Picamera2 that by default does not install the "gui dependencies" (PyQt5 and pyopengl). If you do want them, either install them directly (for example sudo apt install -y python3-pyqt5 python3-opengl or use pip3 install picamera2[gui].

I think the resolves the issue raised here, but if anything else comes up please feel free to raise a new issue. Thanks!