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-rw-r--r--doc/guix.texi20
1 files changed, 17 insertions, 3 deletions
diff --git a/doc/guix.texi b/doc/guix.texi
index 454dde68ff..7b1d18a151 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -760,6 +760,7 @@ explicitly enable substitution @i{via} the @code{set-build-options}
remote procedure call (@pxref{The Store}).
@item --substitute-urls=@var{urls}
+@anchor{daemon-substitute-urls}
Consider @var{urls} the default whitespace-separated list of substitute
source URLs. When this option is omitted, @indicateurl{http://hydra.gnu.org}
is used.
@@ -1434,9 +1435,12 @@ also result from derivation builds, can be available as substitutes.
The @code{hydra.gnu.org} server is a front-end to a build farm that
builds packages from the GNU distribution continuously for some
architectures, and makes them available as substitutes. This is the
-default source of substitutes; it can be overridden by passing
-@command{guix-daemon} the @code{--substitute-urls} option
-(@pxref{Invoking guix-daemon}).
+default source of substitutes; it can be overridden by passing the
+@option{--substitute-urls} option either to @command{guix-daemon}
+(@pxref{daemon-substitute-urls,, @code{guix-daemon --substitute-urls}})
+or to client tools such as @command{guix package}
+(@pxref{client-substitute-urls,, client @option{--substitute-urls}
+option}).
@cindex security
@cindex digital signatures
@@ -3584,6 +3588,16 @@ Do not build the derivations.
When substituting a pre-built binary fails, fall back to building
packages locally.
+@item --substitute-urls=@var{urls}
+@anchor{client-substitute-urls}
+Consider @var{urls} the whitespace-separated list of substitute source
+URLs, overriding the default list of URLs of @command{guix-daemon}
+(@pxref{daemon-substitute-urls,, @command{guix-daemon} URLs}).
+
+This means that substitutes may be downloaded from @var{urls}, provided
+they are signed by a key authorized by the system administrator
+(@pxref{Substitutes}).
+
@item --no-substitutes
Do not use substitutes for build products. That is, always build things
locally instead of allowing downloads of pre-built binaries