hundido, F96-CE_4 is not currently on my boot-menu. So I booted into a highly modified version of Fossapup64 and followed bigpup's instructions. Pidgin 2.13 installed and ran without issue. So just a couple of pointers:
After you update Puppy Package Manager, take a look at all the pidgin plugins offered. You'll have a better idea than I which ones you may want.
After installing you may have to Menu>fix-menus, or restart-x (AKA graphical server) for it to show up on the Menu. The /usr/share/applications/pidgin.desktop file (used to generate menus) only has this to specify the icon:
Icon=pidgin
And buried the icon in /usr/share/icons/highcolor/FOLDERS/apps.
That may not be sufficient for F96-CE_4 to find one. Suggest selecting the /usr/share/icons/highcolor/48x48/apps/pidgin.png and copying it into /usr/share/pixmaps and editing /usr/share/applications/pidgin.desktop's Icon= to read icon=/usr/share/pixmaps/pidgin.png
Also --if not already on your Menu>Utilities-- suggest installing ListDD. You'll find it here, https://www.forum.puppylinux.com/viewto ... 260#p32260. This is an invaluable tool for determining whether there are missing dependencies, and which.
File-browse to /usr/share/bin --where pidgin and most applications locate the executable-- and Right-Click the pidgin binary. From the pop-up menu click the 'Missing' Tab at the bottom. You'll receive a report of any missing dependencies. [Recommend copying it to a Text file for future reference].
If there are reports of missing libraries, first see if they're really installed but just not found. Ubuntu may have placed them in a folder named /x86_64-linux-gnu. In Puppys, such folder --or its contents-- must be located in a parent /lib folder.
If there actually are missing libraries, PPM's search box my be able to find them. But use a little imagination. For example, if libidn.so.11 were missing you may have to have PPM search for libidn.so. --and then make use of a newer version.
If PPM can't find a library, try pkgs.org. 'Ubuntu's' can usually use debian libraries, and sometimes vice-versa.