tkcvs 8.2.3-1.2 (s390x binary) in ubuntu disco

 TkCVS is a Tk based graphical interface to the CVS and Subversion
 version control systems. For CVS, it includes facilities for providing
 "user friendly" names to modules and directories within the repository,
 and provides a facility to interactively browse the repository looking for
 modules and directories.
 .
 Some of the features of TkCVS include:
 .
 File and directory browser, with optional display of hidden
 files, and display of the current directory's location within
 the CVS tree.
 .
 Push-button based check-in / check-out of CVS modules. Ability
 to add and delete files from the repository also using push
 buttons.
 .
 Module tree browser, and reports showing the structure of the
 CVS modules tree. Individual modules or entire directory trees
 may be checked out using the browser.
 .
 Updating of files from the repository when they change.
 .
 Tagging and branching of files from the file browser, and tagging
 and branching of modules from the module browser.
 .
 Exporting a CVS module or directory from the repository for
 delivery off-site.
 .
 Creation of patch files between two releases of a module, or
 between a release and the current (head) version.
 .
 Viewing of diff and status listings for currently checked out
 modules.