Index: lldb/trunk/lit/helper/toolchain.py
===================================================================
--- lldb/trunk/lit/helper/toolchain.py
+++ lldb/trunk/lit/helper/toolchain.py
@@ -52,7 +52,8 @@
 
     llvm_config.add_tool_substitutions(primary_tools,
                                        [config.lldb_tools_dir])
-    if lldbmi.was_resolved:
+    # lldb-mi always fails without Python support
+    if lldbmi.was_resolved and not config.lldb_disable_python:
         config.available_features.add('lldb-mi')
 
 def _use_msvc_substitutions(config):
Index: lldb/trunk/lit/lit.site.cfg.py.in
===================================================================
--- lldb/trunk/lit/lit.site.cfg.py.in
+++ lldb/trunk/lit/lit.site.cfg.py.in
@@ -17,6 +17,7 @@
 config.have_zlib = @LLVM_ENABLE_ZLIB@
 config.host_triple = "@LLVM_HOST_TRIPLE@"
 config.lldb_bitness = 64 if @LLDB_IS_64_BITS@ else 32
+config.lldb_disable_python = @LLDB_DISABLE_PYTHON@
 
 # Support substitution of the tools and libs dirs with user parameters. This is
 # used when we can't determine the tool dir at configuration time.
Index: lldb/trunk/lit/tools/lldb-mi/lit.local.cfg
===================================================================
--- lldb/trunk/lit/tools/lldb-mi/lit.local.cfg
+++ lldb/trunk/lit/tools/lldb-mi/lit.local.cfg
@@ -0,0 +1,2 @@
+if not "lldb-mi" in config.available_features:
+    config.unsupported = True