test/sysroot-crates-are-unstable: Fix test when rpath is disabled

smaeul · smaeul · commit 973956a369be · 2023-08-31T19:41:01.000-05:00
Without this environment var, the test can't run rustc to find
the sysroot path.
diff --git a/src/test/run-make-fulldeps/sysroot-crates-are-unstable/Makefile b/src/test/run-make-fulldeps/sysroot-crates-are-unstable/Makefile
@@ -1,2 +1,4 @@
+-include ../tools.mk
+
 all:
-	'$(PYTHON)' test.py
+	env '$(HOST_RPATH_ENV)' '$(PYTHON)' test.py
