There are two ways to search for a part for a PCB. You can search based on its function or you can search based on it’s manufacturer.
I tried creating a set of cmpcats to add the ability to search for parts by manufacturer to the LibrePCB libraries. I created a ROOT level cmpcat named “Manufacturer”. Then each vendor library could create a cmpcat with its own name under “Manufacturer” and attach all of their parts to that cmpcat as well as its functional cmpcat.
I ran into a problem with devices that used the standard libraries for both component and package. If I have a op-amp in a Texas Instruments library that used a component from the ICs library then it was not listed under Manufacturer/TI category. I would need to put the component in the TI library and assign it to the TI cmpcat before it would be included.
We need to extend the cmpcats on a Device to also include their components if this feature is going to be useful.