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-rw-r--r--doc/guix.texi21
1 files changed, 20 insertions, 1 deletions
diff --git a/doc/guix.texi b/doc/guix.texi
index 7fd94f562f..4c0f6b54e5 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -4059,6 +4059,7 @@ guix-daemon}). It can also be disabled temporarily by passing the
@node Getting Substitutes from Other Servers
@subsection Getting Substitutes from Other Servers
+@c Note: This section name appears in a hint printed by 'guix weather'.
@cindex substitute servers, adding more
Guix can look up and fetch substitutes from several servers. This is
@@ -4158,6 +4159,21 @@ can list as many substitute servers as you like, with the caveat that
substitute lookup can be slowed down if too many servers need to be
contacted.
+@quotation Troubleshooting
+To diagnose problems, you can run @command{guix weather}. For example,
+running:
+
+@example
+guix weather coreutils
+@end example
+
+@noindent
+not only tells you which of the currently-configured servers has
+substitutes for the @code{coreutils} package, it also reports whether
+one of these servers is unauthorized. @xref{Invoking guix weather}, for
+more information.
+@end quotation
+
Note that there are also situations where one may want to add the URL of
a substitute server @emph{without} authorizing its key.
@xref{Substitute Authentication}, to understand this fine point.
@@ -16499,7 +16515,10 @@ up building packages by yourself (@pxref{Substitutes}). The
specified servers so you can have an idea of whether you'll be grumpy
today. It can sometimes be useful info as a user, but it is primarily
useful to people running @command{guix publish} (@pxref{Invoking guix
-publish}).
+publish}). Sometimes substitutes @emph{are} available but they are not
+authorized on your system; @command{guix weather} reports it so you can
+authorize them if you want (@pxref{Getting Substitutes from Other
+Servers}).
@cindex statistics, for substitutes
@cindex availability of substitutes