From 40b1963b6b32d37a99c8a1a76cb153a2598af9ef Mon Sep 17 00:00:00 2001
From: Wojtek Kosior <koszko@koszko.org>
Date: Tue, 5 Sep 2023 18:13:10 +0200
Subject: Make it easy to override Make variables with the guix command to use

---
 Makefile | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Makefile b/Makefile
index f864fbe..a205427 100644
--- a/Makefile
+++ b/Makefile
@@ -4,14 +4,14 @@
 #
 # Available under the terms of Creative Commons Zero v1.0 Universal.
 
-GUIX := guix
+GUIX ?= guix
 
 # Almost all commands in this Makefilo are run through `guix time-machine` with
 # Guix revision fixed to the one from the commit below. This ensures that the
 # same working environment is always used.
-GUIX_COMMIT := a86979b41a49a8fcdaa887970ba594dbba701226
+GUIX_COMMIT ?= a86979b41a49a8fcdaa887970ba594dbba701226
 
-GUIX_TM = $(GUIX) time-machine --commit=$(GUIX_COMMIT) --
+GUIX_TM ?= $(GUIX) time-machine --commit=$(GUIX_COMMIT) --
 
 GUIX_DEVSHELL = $(GUIX_TM) shell -Df guix.scm --
 
-- 
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