GNU bug report logs - #65866
[PATCH 0/8] Add built-in builder for Git checkouts

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From: Ludovic Courtès <ludo <at> gnu.org>
To: 65866 <at> debbugs.gnu.org
Cc: Ludovic Courtès <ludo <at> gnu.org>, Christopher Baines <guix <at> cbaines.net>, Josselin Poiret <dev <at> jpoiret.xyz>, Ludovic Courtès <ludo <at> gnu.org>, Mathieu Othacehe <othacehe <at> gnu.org>, Ricardo Wurmus <rekado <at> elephly.net>, Simon Tournier <zimon.toutoune <at> gmail.com>, Tobias Geerinckx-Rice <me <at> tobias.gr>
Subject: [bug#65866] [PATCH v2 3/8] perform-download: Remove unused one-argument clause.
Date: Sat, 23 Sep 2023 00:27:59 +0200

Code in ‘builtins.cc’ only ever invokes ‘guix perform-download’ with two
arguments.

* guix/scripts/perform-download.scm (guix-perform-download): Remove
unused one-argument clause.
(perform-download): Make ‘output’ parameter mandatory; remove ‘output*’
variable.
---
 guix/scripts/perform-download.scm | 20 ++++++--------------
 1 file changed, 6 insertions(+), 14 deletions(-)

diff --git a/guix/scripts/perform-download.scm b/guix/scripts/perform-download.scm
index 6889bcef79..3b29a3c81d 100644
--- a/guix/scripts/perform-download.scm
+++ b/guix/scripts/perform-download.scm
@@ -42,16 +42,14 @@ (define %user-module
     (module-use! module (resolve-interface '(guix base32)))
     module))
 
-(define* (perform-download drv #:optional output
+(define* (perform-download drv output
                            #:key print-build-trace?)
   "Perform the download described by DRV, a fixed-output derivation, to
 OUTPUT.
 
-Note: Unless OUTPUT is #f, we don't read the value of 'out' in DRV since the
-actual output is different from that when we're doing a 'bmCheck' or
-'bmRepair' build."
+Note: OUTPUT may differ from the 'out' value of DRV, notably for 'bmCheck' or
+'bmRepair' builds."
   (derivation-let drv ((url "url")
-                       (output* "out")
                        (executable "executable")
                        (mirrors "mirrors")
                        (content-addressed-mirrors "content-addressed-mirrors")
@@ -59,8 +57,7 @@ (define* (perform-download drv #:optional output
     (unless url
       (leave (G_ "~a: missing URL~%") (derivation-file-name drv)))
 
-    (let* ((output     (or output output*))
-           (url        (call-with-input-string url read))
+    (let* ((url        (call-with-input-string url read))
            (drv-output (assoc-ref (derivation-outputs drv) "out"))
            (algo       (derivation-output-hash-algo drv-output))
            (hash       (derivation-output-hash drv-output)))
@@ -120,13 +117,8 @@ (define-command (guix-perform-download . args)
     (match args
       (((? derivation-path? drv) (? store-path? output))
        (assert-low-privileges)
-       (perform-download (read-derivation-from-file drv)
-                         output
-                         #:print-build-trace? print-build-trace?))
-      (((? derivation-path? drv))                 ;backward compatibility
-       (assert-low-privileges)
-       (perform-download (read-derivation-from-file drv)
-                         #:print-build-trace? print-build-trace?))
+       (let ((drv (read-derivation-from-file drv)))
+         (perform-download drv output #:print-build-trace? print-build-trace?)))
       (("--version")
        (show-version-and-exit))
       (x
-- 
2.41.0

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