Red Hat Bugzilla – Bug 844514
scanner programs don't ask for scanner drivers
Last modified: 2014-04-03 09:54:00 EDT
Description of problem: When I installed these scanner programs: gscan2pdf xsane xsane-gimp skanlite simple-scan none of them asked for me to install sane-backends-drivers-scanners. I wasted time trying to find out why 'scanimage -L' couldn't find my scanner, but 'sane-find-scanner' could. Version-Release number of selected component (if applicable): sane-backends-drivers-scanners-1.0.22-11.fc17 How reproducible: Everytime Steps to Reproduce: 1.Setup printer/scanner combo machine. 2.Machine prints fine, but scanner not recognized even after installing scanner programs. 3.Install sane-backends-drivers-scanners separately, and now scanner programs work. Actual results: Scanner programs only work after manually installing sane-backends-drivers-scanners. Expected results: sane-backends-drivers-scanners automatically installed as a dependency of scanner programs. Additional info: Maybe this is a bug against scanner programs, and not sane-backends-drivers-scanners, but this seems simpler.
Agree it should be as simple as: yum install sane-backends The clue is in man sane-epson2: FILES /usr/lib64/sane/libsane-epson2.a The static library implementing this backend. /usr/lib64/sane/libsane-epson2.so The shared library implementing this backend (present on systems that support dynamic loading). which leads to required packages: [root@leel sane.d]# rpm -qf epson2.conf sane-backends-1.0.22-11.fc17.x86_64 [root@leel sane.d]# rpm -qf /usr/lib64/sane/libsane-epson2.so sane-backends-drivers-scanners-1.0.22-11.fc17.x86_64 [root@leel sane.d]# rpm -qR sane-backends config(sane-backends) = 1.0.22-11.fc17 ... sane-backends-libs(x86-64) = 1.0.22-11.fc17 ... I believe man page is the only way to avoid circular dependency: [root@leel sane.d]# rpm -qR sane-backends-drivers-scanners | grep sane libsane.so.1()(64bit) sane-backends = 1.0.22-11.fc17 sane-backends-libs(x86-64) = 1.0.22-11.fc17 although I'd argue that you should be able to install the scanner drivers without dependencies on bakend and libs since they are just a bunch of drivers. OTOH backends and libs won't work wihout drivers.
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I think the proper way to do this is to install scanner backend drivers if devices supported by them are detected, similar to cups printer drivers, by way of udev rules and PackageKit. Moving to Rawhide/FutureFeature so it doesn't get closed again.
*** This bug has been marked as a duplicate of bug 918238 ***