From 4e1f7b1df67955c6ebd27bf83a07933ca521b174 Mon Sep 17 00:00:00 2001
From: Tobias Geerinckx-Rice <me@tobias.gr>
Date: Sun, 2 Jul 2023 02:00:00 +0200
Subject: gnu: btrbk: Re-use $PREFIX in our substitution.

* gnu/packages/backup.scm (btrbk)[arguments]:
Don't hard-code #$OUTPUT in the 'configure phase.
---
 gnu/packages/backup.scm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gnu/packages/backup.scm b/gnu/packages/backup.scm
index 1555304811..921398bad6 100644
--- a/gnu/packages/backup.scm
+++ b/gnu/packages/backup.scm
@@ -1153,7 +1153,7 @@ interactive mode.")
                      (lambda _
                        (substitute* "Makefile"
                          (("= /etc")
-                          (string-append "= " #$output "/etc")))))
+                          (string-append "= $(PREFIX)/etc")))))
                    (delete 'check)
                    (add-after 'install 'wrap-scripts
                      (lambda* (#:key inputs outputs #:allow-other-keys)
-- 
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