nix: removes unnecessary use of `cat` in ivory-header build
@@ -13,7 +13,7 @@ fi
# first 7 bytes != "version" (start of an lfs pointer)
#
-if [ "$(cat "$IVORY" | head -c 7)" = "version" ]; then
+if [ "$(head -c 7 "$IVORY")" = "version" ]; then
echo "$IVORY is an LFS pointer (it starts with 'version')"
echo "to fix, run: git lfs install"
exit 1
