From c5586a1724ad65bbe286ddd5c300f4bb7c702f65 Mon Sep 17 00:00:00 2001
From: Bobby Impollonia <bobbyi@gmail.com>
Date: Mon, 3 Oct 2022 17:28:28 -0400
Subject: [PATCH] More portable grep invocation in Makefile (#5522)

LGTM - thanks for the fix @bobbyi!
---
 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 84f475f71..198adadcb 100644
--- a/Makefile
+++ b/Makefile
@@ -22,7 +22,7 @@ lint:
 	@echo "Running flake8..."
 	flake8 moto tests
 	@echo "Running black... "
-	$(eval black_version := $(shell grep -oP "(?<=black==).*" requirements-dev.txt))
+	$(eval black_version := $(shell grep "^black==" requirements-dev.txt | sed "s/black==//"))
 	@echo "(Make sure you have black-$(black_version) installed, as other versions will produce different results)"
 	black --check moto/ tests/
 	@echo "Running pylint..."