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authorNikita Karetnikov <nikita@karetnikov.org>2013-09-26 02:36:24 +0000
committerNikita Karetnikov <nikita@karetnikov.org>2013-09-26 15:41:43 +0000
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guix package: Add '--delete-generations'.
* guix/scripts/package.scm (switch-to-previous-generation): New function. (roll-back): Use the new function instead of 'switch-link'. (show-help): Add '--delete-generations'. (%options): Likewise. (guix-package)[process-actions]: Add 'current-generation-number', 'display-and-delete', and 'delete-generation'. Add support for '--delete-generations', and reindent the code. * tests/guix-package.sh: Test '--delete-generations'. * doc/guix.texi (Invoking guix-package): Document '--delete-generations'.
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diff --git a/doc/guix.texi b/doc/guix.texi
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@@ -714,6 +714,16 @@ or months by passing an integer along with the first letter of the
duration, e.g., @code{--list-generations=20d}.
@end itemize
+@item --delete-generations[=@var{pattern}]
+@itemx -d [@var{pattern}]
+Delete all generations except the current one. Note that the zeroth
+generation is never deleted.
+
+This command accepts the same patterns as @option{--list-generations}.
+When @var{pattern} is specified, delete the matching generations. If
+the current generation matches, it is deleted atomically, i.e., by
+switching to the previous available generation.
+
@end table
@node Packages with Multiple Outputs