From e584a093f943be216fdc93895281fde835836b8d Mon Sep 17 00:00:00 2001
From: Maxime Devos <maximedevos@telenet.be>
Date: Sat, 19 Mar 2022 22:39:33 +0000
Subject: packages: Fix time-travel from Guix 1.1.0 / Guile < 2.2.7.
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* guix/packages.scm: Only set #:replace? #true when Guile is >= 2.2.7.

Fixes: <https://issues.guix.gnu.org/53765>
Reported-By: Peter Kois <kangus@gmail.com>
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
---
 guix/packages.scm | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/guix/packages.scm b/guix/packages.scm
index 288ae37523..1c63eb2d3e 100644
--- a/guix/packages.scm
+++ b/guix/packages.scm
@@ -7,6 +7,7 @@
 ;;; Copyright © 2019 Marius Bakke <mbakke@fastmail.com>
 ;;; Copyright © 2020, 2021 Maxim Cournoyer <maxim.cournoyer@gmail.com>
 ;;; Copyright © 2021 Chris Marusich <cmmarusich@gmail.com>
+;;; Copyright © 2022 Maxime Devos <maximedevos@telenet.be>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -182,8 +183,16 @@
 
 ;; The 'source-module-closure' procedure ca. 1.2.0 did not recognize
 ;; #:re-export-and-replace: <https://issues.guix.gnu.org/52694>.
-;; Work around it.
-(module-re-export! (current-module) '(delete) #:replace? #t)
+;; Work around it.  The #:replace? argument is only supported by
+;; Guile 2.2.7 and later, work-around it if necessary to allow
+;; time-travel from 1.1.0, see <https://issues.guix.gnu.org/53765>.
+(let ((major (string->number (major-version))))
+  (if (or (>= major 3)
+          (and (= major 2)
+               (= (string->number (minor-version)) 2) ; there is no Guile 2.3.X
+               (>= (string->number (micro-version)) 7)))
+      (module-re-export! (current-module) '(delete) #:replace? #t)
+      (module-re-export! (current-module) '(delete))))
 
 ;;; Commentary:
 ;;;
-- 
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