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--- packages:alternatives [2016-02-01 06:21] – glen
+++ packages:alternatives [2016-02-01 06:25] (current) – glen
@@ Line 1: / Line 1: @@
 ====== alternatives ======
-[[http://linux.die.net/man/8/update-alternatives|update-alternatives]] - maintain symbolic links determining default commands
+[[http://linux.die.net/man/8/update-alternatives|update-alternatives]] - maintain symbolic links determining default commands.
+Default implementation in PLD Linux is provided by ''alternatives'' package from [[package>chkconfig]].
+===== switching alternative =====
+By default ''alternatives'' uses ''auto'' mode picking the "best" alternative.
+//TODO: how to enforce sysadmin preference//
 ===== integrating =====
@@ Line 39: / Line 47: @@
   - the ''%%--slave%%'' option is optional and may be repeated, use if you wish to "group" alternatives
   - use proper ''%postun'' to remove alternative on package uninstall
+<note warning>
+Currently it remains unclear how to handle optional files, as for above example:
+  - ''%{_mandir}'' path can be missing if ''%_excludedocs'' is set
+  - ''%{_mandir}'' path could be ''.gz'' compressed or not, it's currently solved with a glob: ''%{_mandir}/man1/phar%{ver_suffix}.1*''
+</note>