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-rw-r--r--doc/guix.texi13
1 files changed, 13 insertions, 0 deletions
diff --git a/doc/guix.texi b/doc/guix.texi
index 34f6810f34..ce011959ad 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -1958,6 +1958,19 @@ If the @option{--format} option is not specified, @command{guix hash}
will output the hash in @code{nix-base32}. This representation is used
in the definitions of packages.
+@item --recursive
+@itemx -r
+Compute the hash on @var{file} recursively.
+
+In this case, the hash is computed on an archive containing @var{file},
+including its children if it is a directory. Some of @var{file}'s
+meta-data is part of the archive; for instance, when @var{file} is a
+regular file, the hash is different depending on whether @var{file} is
+executable or not. Meta-data such as time stamps has no impact on the
+hash (@pxref{Invoking guix archive}).
+@c FIXME: Replace xref above with xref to an ``Archive'' section when
+@c it exists.
+
@end table
@node Invoking guix refresh