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| author | Ludovic Courtès <ludo@gnu.org> | 2013-01-27 17:18:55 +0100 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2013-01-27 17:18:55 +0100 |
| commit | d9307267b3b4a87391e33daacef162745f057c3d (patch) | |
| tree | 8aa72a440c39aa507936abfb1ed7d625e5ff3fd2 /doc | |
| parent | 29767aaef67e78ca4ca80448725a4183146e463a (diff) | |
| download | gnu-guix-d9307267b3b4a87391e33daacef162745f057c3d.tar gnu-guix-d9307267b3b4a87391e33daacef162745f057c3d.tar.gz | |
guix-package: When rolling back to nothingness, point to the empty profile.
Suggested by Andreas Enge <andreas@enge.fr> at
<http://lists.gnu.org/archive/html/bug-guix/2013-01/msg00316.html>.
* guix-package.in (roll-back): Check whether PROFILE is valid using
`file-exists?'. When NUMBER is zero, just emit a notice. When
PREVIOUS-NUMBER is zero and PREVIOUS-PROFILE does not exist, build the
empty profile, and link to it.
* tests/guix-package.sh: Add tests.
* doc/guix.texi (Invoking guix-package): Document the new behavior.
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/guix.texi | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/doc/guix.texi b/doc/guix.texi index e1ca095daa..1385cd4532 100644 --- a/doc/guix.texi +++ b/doc/guix.texi @@ -509,6 +509,11 @@ the last transaction. When combined with options such as @code{--install}, roll back occurs before any other actions. +When rolling back from the first generation that actually contains +installed packages, the profile is made to point to the @dfn{empty +profile}, also known as @dfn{profile zero}---i.e., it contains no files +apart from its own meta-data. + @item --profile=@var{profile} @itemx -p @var{profile} Use @var{profile} instead of the user's default profile. |