gem-bluecloth-devel-2.2.0.2-alt1.noarch rpm-filesystem-conflict-file-file warn File /usr/include/cstring.h conflicts with the package libsexpr-devel-1.3.1-alt1.x86_64. Moreover, the packages have no explicit conflicts with each other. You should add explicit conflicts, or, if conflicts are avoidable, consider using alternatives.; .; f conflicts are avoidable, consider using alternatives.;