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-rw-r--r--doc/guix.texi15
1 files changed, 15 insertions, 0 deletions
diff --git a/doc/guix.texi b/doc/guix.texi
index 512b3ae9ce..69129d5835 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -5997,6 +5997,21 @@ The @code{--container} option requires Linux-libre 3.19 or newer.
The available options are summarized below.
@table @code
+@item --root=@var{file}
+@itemx -r @var{file}
+@cindex persistent environment
+@cindex garbage collector root, for environments
+Make @var{file} a symlink to the profile for this environment, and
+register it as a garbage collector root.
+
+This is useful if you want to protect your environment from garbage
+collection, to make it ``persistent''.
+
+When this option is omitted, the environment is protected from garbage
+collection only for the duration of the @command{guix environment}
+session. This means that next time you recreate the same environment,
+you could have to rebuild or re-download packages.
+
@item --expression=@var{expr}
@itemx -e @var{expr}
Create an environment for the package or list of packages that