I'm using a HP Laserjet Pro M28a with Ubuntu 18.04. Printing is fine, but I couldn't get the scanner portion to work for quite a while. I've installed the Debian packages for HPLIP 3.17.10 (official repo), then 3.19.8 (PPA) and finally 3.19.11 (other PPA).
Scanner still didn't work. Out of desperation, I've run sudo hp-plugin -i as suggested in other SO posts and suddenly the scanner works, too.
Unfortunately, this script has now dumped a bunch of unowned binaries into my filesystem, specifically:
/usr/lib/sane/hpgt2500_ntdcmsdll-x86_64.so
/usr/lib/sane/libsane-hp2000S1-x86_64.so.1.0.25
/usr/lib/sane/libsane-hpgt2500-x86_64.so.1.0.27
/usr/lib64/sane/hpgt2500_ntdcmsdll-x86_64.so
/usr/lib64/sane/libsane-hp2000S1-x86_64.so.1.0.25
/usr/lib64/sane/libsane-hpgt2500-x86_64.so.1.0.27
/usr/local/lib/libjpeg-x86_64.so.9.2.0
/usr/share/hplip/data/firmware/hp_laserjet_1000.fw.gz
/usr/share/hplip/data/firmware/hp_laserjet_1005_series.fw.gz
/usr/share/hplip/data/firmware/hp_laserjet_1018.fw.gz
/usr/share/hplip/data/firmware/hp_laserjet_1020.fw.gz
/usr/share/hplip/data/firmware/hp_laserjet_p1005.fw.gz
/usr/share/hplip/data/firmware/hp_laserjet_p1006.fw.gz
/usr/share/hplip/data/firmware/hp_laserjet_p1007.fw.gz
/usr/share/hplip/data/firmware/hp_laserjet_p1008.fw.gz
/usr/share/hplip/data/firmware/hp_laserjet_p1009.fw.gz
/usr/share/hplip/data/firmware/hp_laserjet_p1505.fw.gz
/usr/share/hplip/data/firmware/hp_laserjet_professional_p1102.fw.gz
/usr/share/hplip/data/firmware/hp_laserjet_professional_p1102w.fw.gz
/usr/share/hplip/data/firmware/hp_laserjet_professional_p1566.fw.gz
/usr/share/hplip/data/plugins/license.txt
/usr/share/hplip/fax/plugins/fax_marvell-x86_64.so
/usr/share/hplip/plugin.spec
/usr/share/hplip/prnt/plugins/hbpl1-x86_64.so
/usr/share/hplip/prnt/plugins/lj-x86_64.so
/usr/share/hplip/scan/plugins/bb_escl-x86_64.so
/usr/share/hplip/scan/plugins/bb_marvell-x86_64.so
/usr/share/hplip/scan/plugins/bb_orblite-x86_64.so
/usr/share/hplip/scan/plugins/bb_soap-x86_64.so
/usr/share/hplip/scan/plugins/bb_soapht-x86_64.so
I assume there is some stupid HP license stuff that prevents these files from being packaged regularly, but is there any dpkg-based way to either install or at least properly manage these files? I'm particularly annoyed by the extra JPEG library in /usr/local/lib, this is a surefire way to mess up some totally unrelated package down the road...
Note: I'm not asking how to install the HP plugins, I've already done that. I'm asking how to avoid a future mess with unowned libraries in the system lib directories.
