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--replacefiles
               Install the packages even if they replace files from other,
               already installed, packages. Default is to treat file conflicts
               as an error. --download-as-needed disables the fileconflict
               check because access to all packages filelists is needed in
               advance in order to perform the check.

Package File Conflicts
       File conflicts happen when two packages attempt to install files with
       the same name but different contents. This may happen if you are
       installing a newer version of a package without erasing the older
       version, of if two unrelated packages each install a file with the same
       name.

       As checking for file conflicts requires access to the full filelist of
       each package being installed, zypper will be able to check for file
       conflicts only if all packages are downloaded in advance (see
       --download-in-advance). If you are doing a --dry-run no packages are
       downloaded, so the file conflict check will skip packages not available
       in the packages cache. To get a meaningful file conflict check use
       --dry-run together with --download-only.

       As the reason for file conflicts usually is a poor package design or
       lack of coordination between the people building the packages, they are
       not easy to resolve. By using the --replacefiles option you can force
       zypper to replace the conflicting files. Nevertheless this may damage
       the package whose file gets replaced.

zypper ve