From 99a1e56c593774805ed62d3811c963bfca5fbf32 Mon Sep 17 00:00:00 2001
From: Tom Smeding <tom.smeding@gmail.com>
Date: Sat, 5 Dec 2020 15:31:31 +0100
Subject: Simplify hs dependency stuff in Makefile

---
 2020/Makefile | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/2020/Makefile b/2020/Makefile
index 0b1c54f..340e2ce 100644
--- a/2020/Makefile
+++ b/2020/Makefile
@@ -37,7 +37,6 @@ $(OBJDIR)/%:
 .depend_hs: $(HASKELL_SRC) $(HASKELL_AUX)
 	ghc -dep-suffix '' -dep-makefile $@ -M $(GHCBASEFLAGS) $(HASKELL_SRC)
 	rm -f .depend_hs.bak
-	sed 's/\.o *:/:/; s/\.hi$$/.hs/g; s/\.hi[ \t]/.hs/g' <$@ >$@.tmp
-	mv $@.tmp $@
+	sed -i 's/\.o *:/:/; s/\.hi$$/.hs/g; s/\.hi[ \t]/.hs/g' $@
 
 -include .depend_hs
-- 
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