From d9276a46bf103b2d56770d6a69a900cc21219b96 Mon Sep 17 00:00:00 2001
From: Christopher Baines <mail@cbaines.net>
Date: Sat, 10 Feb 2024 16:56:33 +0000
Subject: [PATCH] scripts: substitute: Remove side effect warning from
 network-error?.
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Instead, display the warning from process-substitution and
process-substitution/fallback in the relevant places.

I'm looking at this because I want to make the substitute code less tied to
the script and usable in the Guile guix-daemon.

* guix/scripts/substitute.scm (network-error?): Move warning to…
(process-substitution/fallback, process-substitution): here.

Change-Id: I082b482c0e6ec7e02a8d437ba22dcefca5c40787
---
 guix/scripts/substitute.scm | 21 +++++++++++++--------
 1 file changed, 13 insertions(+), 8 deletions(-)

diff --git a/guix/scripts/substitute.scm b/guix/scripts/substitute.scm
index 1b2d735d68..9726a80753 100755
--- a/guix/scripts/substitute.scm
+++ b/guix/scripts/substitute.scm
@@ -615,13 +615,7 @@ STATUS-PORT."
           (and (kind-and-args? exception)
                (memq (exception-kind exception)
                      '(gnutls-error getaddrinfo-error)))
-          (and (http-get-error? exception)
-               (begin
-                 (warning (G_ "download from '~a' failed: ~a, ~s~%")
-                          (uri->string (http-get-error-uri exception))
-                          (http-get-error-code exception)
-                          (http-get-error-reason exception))
-                 #t))))))
+          (http-get-error? exception)))))
 
 (define* (process-substitution/fallback port narinfo destination
                                         #:key cache-urls acl
@@ -649,7 +643,13 @@ way to download the nar."
           (if (or (equivalent-narinfo? narinfo alternate)
                   (valid-narinfo? alternate acl)
                   (%allow-unauthenticated-substitutes?))
-              (guard (c ((network-error? c) (loop rest)))
+              (guard (c ((network-error? c)
+                         (when (http-get-error? c)
+                           (warning (G_ "download from '~a' failed: ~a, ~s~%")
+                                    (uri->string (http-get-error-uri c))
+                                    (http-get-error-code c)
+                                    (http-get-error-reason c)))
+                         (loop rest)))
                 (download-nar alternate destination
                               #:status-port port
                               #:deduplicate? deduplicate?
@@ -677,6 +677,11 @@ PORT."
            store-item))
 
   (guard (c ((network-error? c)
+             (when (http-get-error? c)
+               (warning (G_ "download from '~a' failed: ~a, ~s~%")
+                        (uri->string (http-get-error-uri c))
+                        (http-get-error-code c)
+                        (http-get-error-reason c)))
              (format (current-error-port)
                      (G_ "retrying download of '~a' with other substitute URLs...~%")
                      store-item)