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authorLudovic Courtès <ludo@gnu.org>2013-01-17 22:20:42 +0100
committerLudovic Courtès <ludo@gnu.org>2013-01-17 22:42:39 +0100
commit24e262f086980a13d9d0a27615ed7eaec4aacbff (patch)
tree4c519de6a66020766572e3d419cda80290c81634 /doc
parent8ca6cc4b451cab4b686d28f8aedef2c39fab6a17 (diff)
guix-package: Add `--roll-back'.
Based on a patch by Nikita Karetnikov <nikita@karetnikov.org>. * guix-package.in (profile-regexp): New procedure. (latest-profile-number): Remove `%profile-rx', and use `profile-regexp' instead. (profile-number, roll-back): New procedure. (show-help): Add `--roll-back'. (%options): Likewise. (guix-package)[process-actions]: First check whether `roll-back?' is among OPTS, and call `roll-back' if it is, followed by a recursive call to `process-actions'. Emit the "nothing to be done" message only when INSTALL or REMOVE is non-empty. * tests/guix-package.sh (readlink_base): New function. Add tests for `--roll-back'. * doc/guix.texi (Invoking guix-package): Document `--roll-back'.
Diffstat (limited to 'doc')
-rw-r--r--doc/guix.texi7
1 files changed, 7 insertions, 0 deletions
diff --git a/doc/guix.texi b/doc/guix.texi
index 27a00a6ed9..a41560e75c 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -490,6 +490,13 @@ Remove @var{package}.
@itemx -u @var{regexp}
Upgrade all the installed packages matching @var{regexp}.
+@item --roll-back
+Roll back to the previous @dfn{generation} of the profile---i.e., undo
+the last transaction.
+
+When combined with options such as @code{--install}, roll back occurs
+before any other actions.
+
@item --profile=@var{profile}
@itemx -p @var{profile}
Use @var{profile} instead of the user's default profile.