
It is in hplip. So just dowload the hplip driver without dependencies and activate it. Or just pickup the ppd that I have posted on mediafire.
32 bit ppd.
If you look into the /usr/share/ppd/HP folder you will have the compressed ppd. For the HP Deskjet 2050 you found hp-deskjet_2050_j510_series.ppd.gz. All you have to do is to decompressed the file to have a functional ppd. Here is the ppd file from my 32bit installation:
http://www.mediafire.com/?svuacmce7blbr08
64 bit ppd.
God knows why, one cannot find the ppd in the same folder with hplip on 64 bit. It seems to be generated by the CUPS printer installation or with system-config-printer installation. Once generated the file is stored in /etc/cups/ppd folder. Here is the ppd file for hp deskjet 2050 for my 64 bit installation:
http://www.mediafire.com/?rbxejbb326k7rru