tc183 depends on mtl

testsuite/tests/ghc-regress/typecheck/should_compile/all.T

@@ -195,7 +195,7 @@ test('tc179', normal, compile, [''])
 test('tc180', normal, compile, [''])
 test('tc181', normal, compile, [''])
 test('tc182', normal, compile, [''])
-test('tc183', normal, compile, [''])
+test('tc183', reqlib('mtl'), compile, [''])
 test('tc184', normal, compile, [''])
 test('tc185', only_compiler_types(['ghc']), compile, [''])
 test('tc186', normal, compile, [''])