Add a custom plugin to Ultimaker Cura which includes a library not yet included by Cura

[Hanabi-san 1]

Hallo 

 

I have created a custom plugin which uses a library, which is not included in Cura yet. When I run Cura from source, I can add the plugin to Cura, since I imported the library in my locally installed python. But when I add the plugin to the Cura Application, it does not work (it's an extension plugin and won't show up in the extensions menu).

 

I would like to be able to add the plugin directly to the Cura Application instead of having to run Cura from source, since I plan to use it on multiple devices and setting up Cura from source is a lot of work. How can I do this? Do I have to build the new library somehow and add it to the Cura Application?

 

Thanks and Cheers 

[ahoeben 2,011]

You can - in most cases - include the module with your plugin and import it from there. It depends a bit on what module it is how much work it is to include it with your plugin.

 

The OctoPrint plugin contains two pure-Python modules, and here is how they are imported:

https://github.com/fieldOfView/Cura-OctoPrintPlugin/blob/3.5/OctoPrintOutputDevicePlugin.py#L27

 

 

[Hanabi-san 1]

Thank you for your fast reply! I'm trying to import the PyNacl library (https://github.com/pyca/pynacl). When I use your suggested method, I get an error message saying, that PyNacl cannot find its own imports anymore. For instance, in the public.py file of the module, it calls "import nacl.bindings". But after I imported the modul in my project, I get an error message stating "No module named 'nacl'". Does that mean the PyNacl library is not compatible?

 

Thanks and Cheers

[ahoeben 2,011]

You may be interested in this thread:

To make your life easier, see if you can use ```the cryptography module instead of pynacl.

[Hanabi-san 1]

I Just realized that I asked a really similar question about 2 years ago. Back then, I could not solve the problem. However, now I was able to include the PyNacl library by unzipping the PyNacl wheel file of my operating system and including this folder in my project plugin folder. Then, by using your suggested method, I import the library and then Cura is able to load the library correctly.

 

Thank you for your help!

 

Cheers

Edited June 8, 2021 by Hanabi-san