From 0a860338567d2c8b8425fa968fe0fd1bb60922b7 Mon Sep 17 00:00:00 2001
From: Andrew Cady <d@jerkface.net>
Date: Thu, 28 May 2020 20:14:35 -0400
Subject: auto-upgrade submodules

It only does this if git is clean.
---
 Makefile | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 063a4c2..d341da5 100644
--- a/Makefile
+++ b/Makefile
@@ -140,9 +140,11 @@ endif
 
 include user.mk
 
+UPGRADE_SUBMODULES = $(shell a=$$(git status -uno -s) && [ -z "$$a" ] && echo y)
+
 .PHONY: submodule $(SUBMODULES)
 $(SUBMODULES): stack
-	[ -e $@/Makefile ] || git submodule update --init
+	$(if $(UPGRADE_SUBMODULES),, [ -e $@/Makefile ] ||) git submodule update --init
 	$(MAKE) -C $@ $(cmd)
 
 install-submodules: cmd=install
-- 
cgit v1.2.3