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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 /srfi
parent8ca6cc4b451cab4b686d28f8aedef2c39fab6a17 (diff)
downloadguix-24e262f086980a13d9d0a27615ed7eaec4aacbff.tar.gz
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'.
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