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| -rw-r--r-- | doc/guix.texi | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/doc/guix.texi b/doc/guix.texi index 29928c5af4..94658f2b21 100644 --- a/doc/guix.texi +++ b/doc/guix.texi @@ -730,6 +730,9 @@ If the current generation matches, it is deleted atomically---i.e., by switching to the previous available generation. Note that the zeroth generation is never deleted. +Note that deleting generations prevents roll-back to them. +Consequently, this command must be used with care. + @end table @node Packages with Multiple Outputs @@ -797,6 +800,12 @@ deleted. The set of garbage collector roots includes default user profiles, and may be augmented with @command{guix build --root}, for example (@pxref{Invoking guix build}). +Prior to running @code{guix gc --collect-garbage} to make space, it is +often useful to remove old generations from user profiles; that way, old +package builds referenced by those generations can be reclaimed. This +is achieved by running @code{guix package --delete-generations} +(@pxref{Invoking guix package}). + The @command{guix gc} command has three modes of operation: it can be used to garbage-collect any dead files (the default), to delete specific files (the @code{--delete} option), or to print garbage-collector |