diff --git a/debian/patches/python3-shebang.patch b/debian/patches/python3-shebang.patch
new file mode 100644
index 00000000..e8cc3541
--- /dev/null
+++ b/debian/patches/python3-shebang.patch
@@ -0,0 +1,1106 @@
+Description: change all shebangs to Python3
+ find . -name "*.py" -exec sed "s|\!/usr/bin/env python$|\!/usr/bin/env python3|g" -i {} \;
+--- llvm-toolchain-9-9.0.1.orig/clang-tools-extra/clang-include-fixer/find-all-symbols/tool/run-find-all-symbols.py
++++ llvm-toolchain-9-9.0.1/clang-tools-extra/clang-include-fixer/find-all-symbols/tool/run-find-all-symbols.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ #
+ #=- run-find-all-symbols.py - Parallel find-all-symbols runner -*- python  -*-=#
+ #
+--- llvm-toolchain-9-9.0.1.orig/clang-tools-extra/clang-tidy/add_new_check.py
++++ llvm-toolchain-9-9.0.1/clang-tools-extra/clang-tidy/add_new_check.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ #
+ #===- add_new_check.py - clang-tidy check generator ----------*- python -*--===#
+ #
+--- llvm-toolchain-9-9.0.1.orig/clang-tools-extra/clang-tidy/rename_check.py
++++ llvm-toolchain-9-9.0.1/clang-tools-extra/clang-tidy/rename_check.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ #
+ #===- rename_check.py - clang-tidy check renamer -------------*- python -*--===#
+ #
+--- llvm-toolchain-9-9.0.1.orig/clang-tools-extra/clang-tidy/tool/clang-tidy-diff.py
++++ llvm-toolchain-9-9.0.1/clang-tools-extra/clang-tidy/tool/clang-tidy-diff.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ #
+ #===- clang-tidy-diff.py - ClangTidy Diff Checker ------------*- python -*--===#
+ #
+--- llvm-toolchain-9-9.0.1.orig/clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
++++ llvm-toolchain-9-9.0.1/clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ #
+ #===- run-clang-tidy.py - Parallel clang-tidy runner ---------*- python -*--===#
+ #
+--- llvm-toolchain-9-9.0.1.orig/clang-tools-extra/clangd/include-mapping/cppreference_parser.py
++++ llvm-toolchain-9-9.0.1/clang-tools-extra/clangd/include-mapping/cppreference_parser.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ #===- cppreference_parser.py -  ------------------------------*- python -*--===#
+ #
+ # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+--- llvm-toolchain-9-9.0.1.orig/clang-tools-extra/clangd/include-mapping/gen_std.py
++++ llvm-toolchain-9-9.0.1/clang-tools-extra/clangd/include-mapping/gen_std.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ #===- gen_std.py -  ------------------------------------------*- python -*--===#
+ #
+ # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+--- llvm-toolchain-9-9.0.1.orig/clang-tools-extra/clangd/include-mapping/test.py
++++ llvm-toolchain-9-9.0.1/clang-tools-extra/clangd/include-mapping/test.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ #===- test.py -  ---------------------------------------------*- python -*--===#
+ #
+ # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+--- llvm-toolchain-9-9.0.1.orig/clang-tools-extra/test/clang-tidy/check_clang_tidy.py
++++ llvm-toolchain-9-9.0.1/clang-tools-extra/test/clang-tidy/check_clang_tidy.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ #
+ #===- check_clang_tidy.py - ClangTidy Test Helper ------------*- python -*--===#
+ #
+--- llvm-toolchain-9-9.0.1.orig/clang/bindings/python/examples/cindex/cindex-dump.py
++++ llvm-toolchain-9-9.0.1/clang/bindings/python/examples/cindex/cindex-dump.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ #===- cindex-dump.py - cindex/Python Source Dump -------------*- python -*--===#
+ #
+--- llvm-toolchain-9-9.0.1.orig/clang/bindings/python/examples/cindex/cindex-includes.py
++++ llvm-toolchain-9-9.0.1/clang/bindings/python/examples/cindex/cindex-includes.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ #===- cindex-includes.py - cindex/Python Inclusion Graph -----*- python -*--===#
+ #
+--- llvm-toolchain-9-9.0.1.orig/clang/docs/tools/dump_ast_matchers.py
++++ llvm-toolchain-9-9.0.1/clang/docs/tools/dump_ast_matchers.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ # A tool to parse ASTMatchers.h and update the documentation in
+ # ../LibASTMatchersReference.html automatically. Run from the
+ # directory in which this file is located to update the docs.
+--- llvm-toolchain-9-9.0.1.orig/clang/docs/tools/dump_format_style.py
++++ llvm-toolchain-9-9.0.1/clang/docs/tools/dump_format_style.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ # A tool to parse the FormatStyle struct from Format.h and update the
+ # documentation in ../ClangFormatStyleOptions.rst automatically.
+ # Run from the directory in which this file is located to update the docs.
+--- llvm-toolchain-9-9.0.1.orig/clang/test/AST/gen_ast_dump_json_test.py
++++ llvm-toolchain-9-9.0.1/clang/test/AST/gen_ast_dump_json_test.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ from collections import OrderedDict
+ from sets import Set
+--- llvm-toolchain-9-9.0.1.orig/clang/tools/clang-format/clang-format-diff.py
++++ llvm-toolchain-9-9.0.1/clang/tools/clang-format/clang-format-diff.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ #
+ #===- clang-format-diff.py - ClangFormat Diff Reformatter ----*- python -*--===#
+ #
+--- llvm-toolchain-9-9.0.1.orig/clang/tools/scan-view/share/Reporter.py
++++ llvm-toolchain-9-9.0.1/clang/tools/scan-view/share/Reporter.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ # -*- coding: utf-8 -*-
+ 
+ """Methods for reporting bugs."""
+--- llvm-toolchain-9-9.0.1.orig/clang/tools/scan-view/share/startfile.py
++++ llvm-toolchain-9-9.0.1/clang/tools/scan-view/share/startfile.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ # -*- coding: utf-8 -*-
+ 
+ """Utility for opening a file using the default application in a cross-platform
+--- llvm-toolchain-9-9.0.1.orig/clang/utils/ABITest/ABITestGen.py
++++ llvm-toolchain-9-9.0.1/clang/utils/ABITest/ABITestGen.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ from __future__ import absolute_import, division, print_function
+ from pprint import pprint
+--- llvm-toolchain-9-9.0.1.orig/clang/utils/CIndex/completion_logger_server.py
++++ llvm-toolchain-9-9.0.1/clang/utils/CIndex/completion_logger_server.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ from __future__ import absolute_import, division, print_function
+ import sys
+ from socket import *
+--- llvm-toolchain-9-9.0.1.orig/clang/utils/TestUtils/deep-stack.py
++++ llvm-toolchain-9-9.0.1/clang/utils/TestUtils/deep-stack.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ from __future__ import absolute_import, division, print_function
+ def pcall(f, N):
+--- llvm-toolchain-9-9.0.1.orig/clang/utils/analyzer/CmpRuns.py
++++ llvm-toolchain-9-9.0.1/clang/utils/analyzer/CmpRuns.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """
+ CmpRuns - A simple tool for comparing two static analyzer runs to determine
+--- llvm-toolchain-9-9.0.1.orig/clang/utils/analyzer/SATestAdd.py
++++ llvm-toolchain-9-9.0.1/clang/utils/analyzer/SATestAdd.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """
+ Static Analyzer qualification infrastructure: adding a new project to
+--- llvm-toolchain-9-9.0.1.orig/clang/utils/analyzer/SATestBuild.py
++++ llvm-toolchain-9-9.0.1/clang/utils/analyzer/SATestBuild.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """
+ Static Analyzer qualification infrastructure.
+--- llvm-toolchain-9-9.0.1.orig/clang/utils/analyzer/SATestUpdateDiffs.py
++++ llvm-toolchain-9-9.0.1/clang/utils/analyzer/SATestUpdateDiffs.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """
+ Update reference results for static analyzer.
+--- llvm-toolchain-9-9.0.1.orig/clang/utils/analyzer/SumTimerInfo.py
++++ llvm-toolchain-9-9.0.1/clang/utils/analyzer/SumTimerInfo.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """
+ Script to Summarize statistics in the scan-build output.
+--- llvm-toolchain-9-9.0.1.orig/clang/utils/analyzer/exploded-graph-rewriter.py
++++ llvm-toolchain-9-9.0.1/clang/utils/analyzer/exploded-graph-rewriter.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ #
+ #===- exploded-graph-rewriter.py - ExplodedGraph dump tool -----*- python -*--#
+ #
+--- llvm-toolchain-9-9.0.1.orig/clang/utils/check_cfc/check_cfc.py
++++ llvm-toolchain-9-9.0.1/clang/utils/check_cfc/check_cfc.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """Check CFC - Check Compile Flow Consistency
+ 
+--- llvm-toolchain-9-9.0.1.orig/clang/utils/check_cfc/obj_diff.py
++++ llvm-toolchain-9-9.0.1/clang/utils/check_cfc/obj_diff.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ from __future__ import absolute_import, division, print_function
+ 
+--- llvm-toolchain-9-9.0.1.orig/clang/utils/check_cfc/test_check_cfc.py
++++ llvm-toolchain-9-9.0.1/clang/utils/check_cfc/test_check_cfc.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """Test internal functions within check_cfc.py."""
+ 
+--- llvm-toolchain-9-9.0.1.orig/clang/utils/creduce-clang-crash.py
++++ llvm-toolchain-9-9.0.1/clang/utils/creduce-clang-crash.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ """Calls C-Reduce to create a minimal reproducer for clang crashes.
+ 
+ Output files:
+--- llvm-toolchain-9-9.0.1.orig/clang/utils/token-delta.py
++++ llvm-toolchain-9-9.0.1/clang/utils/token-delta.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ from __future__ import absolute_import, division, print_function
+ import os
+--- llvm-toolchain-9-9.0.1.orig/compiler-rt/lib/asan/scripts/asan_symbolize.py
++++ llvm-toolchain-9-9.0.1/compiler-rt/lib/asan/scripts/asan_symbolize.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ #===- lib/asan/scripts/asan_symbolize.py -----------------------------------===#
+ #
+ # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+--- llvm-toolchain-9-9.0.1.orig/compiler-rt/lib/dfsan/scripts/build-libc-list.py
++++ llvm-toolchain-9-9.0.1/compiler-rt/lib/dfsan/scripts/build-libc-list.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ #===- lib/dfsan/scripts/build-libc-list.py ---------------------------------===#
+ #
+ # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+--- llvm-toolchain-9-9.0.1.orig/compiler-rt/lib/fuzzer/scripts/unbalanced_allocs.py
++++ llvm-toolchain-9-9.0.1/compiler-rt/lib/fuzzer/scripts/unbalanced_allocs.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ #===- lib/fuzzer/scripts/unbalanced_allocs.py ------------------------------===#
+ #
+ # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+--- llvm-toolchain-9-9.0.1.orig/compiler-rt/lib/sanitizer_common/scripts/cpplint.py
++++ llvm-toolchain-9-9.0.1/compiler-rt/lib/sanitizer_common/scripts/cpplint.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ #
+ # Copyright (c) 2009 Google Inc. All rights reserved.
+ #
+--- llvm-toolchain-9-9.0.1.orig/compiler-rt/lib/sanitizer_common/scripts/gen_dynamic_list.py
++++ llvm-toolchain-9-9.0.1/compiler-rt/lib/sanitizer_common/scripts/gen_dynamic_list.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ #===- lib/sanitizer_common/scripts/gen_dynamic_list.py ---------------------===#
+ #
+ # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+--- llvm-toolchain-9-9.0.1.orig/compiler-rt/lib/sanitizer_common/scripts/litlint.py
++++ llvm-toolchain-9-9.0.1/compiler-rt/lib/sanitizer_common/scripts/litlint.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ #
+ # litlint
+ #
+--- llvm-toolchain-9-9.0.1.orig/compiler-rt/lib/sanitizer_common/scripts/sancov.py
++++ llvm-toolchain-9-9.0.1/compiler-rt/lib/sanitizer_common/scripts/sancov.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ # Merge or print the coverage data collected by asan's coverage.
+ # Input files are sequences of 4-byte integers.
+ # We need to merge these integers into a set and then
+--- llvm-toolchain-9-9.0.1.orig/libcxx/utils/cat_files.py
++++ llvm-toolchain-9-9.0.1/libcxx/utils/cat_files.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ #===----------------------------------------------------------------------===##
+ #
+ # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+--- llvm-toolchain-9-9.0.1.orig/libcxx/utils/gen_link_script.py
++++ llvm-toolchain-9-9.0.1/libcxx/utils/gen_link_script.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ #===----------------------------------------------------------------------===##
+ #
+ # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+--- llvm-toolchain-9-9.0.1.orig/libcxx/utils/generate_feature_test_macro_components.py
++++ llvm-toolchain-9-9.0.1/libcxx/utils/generate_feature_test_macro_components.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ import os
+ import tempfile
+--- llvm-toolchain-9-9.0.1.orig/libcxx/utils/google-benchmark/tools/compare.py
++++ llvm-toolchain-9-9.0.1/libcxx/utils/google-benchmark/tools/compare.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ import unittest
+ """
+--- llvm-toolchain-9-9.0.1.orig/libcxx/utils/google-benchmark/tools/strip_asm.py
++++ llvm-toolchain-9-9.0.1/libcxx/utils/google-benchmark/tools/strip_asm.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """
+ strip_asm.py - Cleanup ASM output for the specified file
+--- llvm-toolchain-9-9.0.1.orig/libcxx/utils/merge_archives.py
++++ llvm-toolchain-9-9.0.1/libcxx/utils/merge_archives.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ #===----------------------------------------------------------------------===##
+ #
+ # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+--- llvm-toolchain-9-9.0.1.orig/libcxx/utils/sym_diff.py
++++ llvm-toolchain-9-9.0.1/libcxx/utils/sym_diff.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ #===----------------------------------------------------------------------===##
+ #
+ # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+--- llvm-toolchain-9-9.0.1.orig/libcxx/utils/sym_extract.py
++++ llvm-toolchain-9-9.0.1/libcxx/utils/sym_extract.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ #===----------------------------------------------------------------------===##
+ #
+ # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+--- llvm-toolchain-9-9.0.1.orig/libcxx/utils/sym_match.py
++++ llvm-toolchain-9-9.0.1/libcxx/utils/sym_match.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ #===----------------------------------------------------------------------===##
+ #
+ # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+--- llvm-toolchain-9-9.0.1.orig/lld/utils/benchmark.py
++++ llvm-toolchain-9-9.0.1/lld/utils/benchmark.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ #
+ # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+ # See https://llvm.org/LICENSE.txt for license information.
+--- llvm-toolchain-9-9.0.1.orig/lldb/lit/Quit/expect_exit_code.py
++++ llvm-toolchain-9-9.0.1/lldb/lit/Quit/expect_exit_code.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ import subprocess
+ import sys
+--- llvm-toolchain-9-9.0.1.orig/lldb/packages/Python/lldbsuite/test/attic/tester.py
++++ llvm-toolchain-9-9.0.1/lldb/packages/Python/lldbsuite/test/attic/tester.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ # -*- coding: utf8 -*-
+ 
+ from __future__ import print_function
+--- llvm-toolchain-9-9.0.1.orig/lldb/packages/Python/lldbsuite/test/bench.py
++++ llvm-toolchain-9-9.0.1/lldb/packages/Python/lldbsuite/test/bench.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """
+ A simple bench runner which delegates to the ./dotest.py test driver to run the
+--- llvm-toolchain-9-9.0.1.orig/lldb/packages/Python/lldbsuite/test/issue_verification/disable.py
++++ llvm-toolchain-9-9.0.1/lldb/packages/Python/lldbsuite/test/issue_verification/disable.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ """Renames *.py files to *.py.park."""
+ import os
+ import sys
+--- llvm-toolchain-9-9.0.1.orig/lldb/packages/Python/lldbsuite/test/issue_verification/enable.py
++++ llvm-toolchain-9-9.0.1/lldb/packages/Python/lldbsuite/test/issue_verification/enable.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ """Renames *.py.park files to *.py."""
+ import os
+ import sys
+--- llvm-toolchain-9-9.0.1.orig/lldb/packages/Python/lldbsuite/test/redo.py
++++ llvm-toolchain-9-9.0.1/lldb/packages/Python/lldbsuite/test/redo.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """
+ A simple utility to redo the failed/errored tests.
+--- llvm-toolchain-9-9.0.1.orig/lldb/packages/Python/lldbsuite/test/test_runner/test/inferior.py
++++ llvm-toolchain-9-9.0.1/lldb/packages/Python/lldbsuite/test/test_runner/test/inferior.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ """Inferior program used by process control tests."""
+ 
+ from __future__ import print_function
+--- llvm-toolchain-9-9.0.1.orig/lldb/packages/Python/lldbsuite/test/test_runner/test/test_process_control.py
++++ llvm-toolchain-9-9.0.1/lldb/packages/Python/lldbsuite/test/test_runner/test/test_process_control.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ """
+ Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+ See https://llvm.org/LICENSE.txt for license information.
+--- llvm-toolchain-9-9.0.1.orig/lldb/packages/Python/lldbsuite/test/tools/lldb-vscode/vscode.py
++++ llvm-toolchain-9-9.0.1/lldb/packages/Python/lldbsuite/test/tools/lldb-vscode/vscode.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ import binascii
+ import json
+--- llvm-toolchain-9-9.0.1.orig/lldb/packages/Python/lldbsuite/test_event/test/src/TestCatchInvalidDecorator.py
++++ llvm-toolchain-9-9.0.1/lldb/packages/Python/lldbsuite/test_event/test/src/TestCatchInvalidDecorator.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ """
+ Tests that the event system reports issues during decorator
+ handling as errors.
+--- llvm-toolchain-9-9.0.1.orig/lldb/scripts/Xcode/build-llvm.py
++++ llvm-toolchain-9-9.0.1/lldb/scripts/Xcode/build-llvm.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ import errno
+ import hashlib
+--- llvm-toolchain-9-9.0.1.orig/lldb/scripts/buildbot.py
++++ llvm-toolchain-9-9.0.1/lldb/scripts/buildbot.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ import argparse
+ import os
+--- llvm-toolchain-9-9.0.1.orig/lldb/scripts/prepare_bindings.py
++++ llvm-toolchain-9-9.0.1/lldb/scripts/prepare_bindings.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ """
+ Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+ See https://llvm.org/LICENSE.txt for license information.
+--- llvm-toolchain-9-9.0.1.orig/lldb/scripts/swig_bot.py
++++ llvm-toolchain-9-9.0.1/lldb/scripts/swig_bot.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """
+ SWIG generation top-level script.  Supports both local and remote generation
+--- llvm-toolchain-9-9.0.1.orig/lldb/scripts/swig_bot_lib/client.py
++++ llvm-toolchain-9-9.0.1/lldb/scripts/swig_bot_lib/client.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """
+ SWIG generation client.  Supports both local and remote generation of SWIG
+--- llvm-toolchain-9-9.0.1.orig/lldb/scripts/swig_bot_lib/local.py
++++ llvm-toolchain-9-9.0.1/lldb/scripts/swig_bot_lib/local.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """
+ Shared functionality used by `client` and `server` when generating or preparing
+--- llvm-toolchain-9-9.0.1.orig/lldb/scripts/swig_bot_lib/remote.py
++++ llvm-toolchain-9-9.0.1/lldb/scripts/swig_bot_lib/remote.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """
+ Shared functionality used by `client` and `server` when dealing with
+--- llvm-toolchain-9-9.0.1.orig/lldb/scripts/swig_bot_lib/server.py
++++ llvm-toolchain-9-9.0.1/lldb/scripts/swig_bot_lib/server.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """
+ SWIG generation server.  Listens for connections from swig generation clients
+--- llvm-toolchain-9-9.0.1.orig/lldb/scripts/verify_api.py
++++ llvm-toolchain-9-9.0.1/lldb/scripts/verify_api.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ import subprocess
+ import optparse
+--- llvm-toolchain-9-9.0.1.orig/lldb/test/dotest.py
++++ llvm-toolchain-9-9.0.1/lldb/test/dotest.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ if __name__ == "__main__":
+     import use_lldb_suite
+--- llvm-toolchain-9-9.0.1.orig/lldb/third_party/Python/module/pexpect-4.6/pexpect/FSM.py
++++ llvm-toolchain-9-9.0.1/lldb/third_party/Python/module/pexpect-4.6/pexpect/FSM.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ '''This module implements a Finite State Machine (FSM). In addition to state
+ this FSM also maintains a user defined "memory". So this FSM can be used as a
+--- llvm-toolchain-9-9.0.1.orig/lldb/utils/git-svn/convert.py
++++ llvm-toolchain-9-9.0.1/lldb/utils/git-svn/convert.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """
+ Convert the raw message sources from git patch emails to git-am friendly files.
+--- llvm-toolchain-9-9.0.1.orig/lldb/utils/lui/lui.py
++++ llvm-toolchain-9-9.0.1/lldb/utils/lui/lui.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ ##===-- lui.py -----------------------------------------------*- Python -*-===##
+ ##
+ # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+--- llvm-toolchain-9-9.0.1.orig/lldb/utils/lui/sandbox.py
++++ llvm-toolchain-9-9.0.1/lldb/utils/lui/sandbox.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ ##===-- sandbox.py -------------------------------------------*- Python -*-===##
+ ##
+ # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+--- llvm-toolchain-9-9.0.1.orig/lldb/utils/misc/grep-svn-log.py
++++ llvm-toolchain-9-9.0.1/lldb/utils/misc/grep-svn-log.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """
+ Greps and returns the first svn log entry containing a line matching the regular
+--- llvm-toolchain-9-9.0.1.orig/lldb/utils/sync-source/syncsource.py
++++ llvm-toolchain-9-9.0.1/lldb/utils/sync-source/syncsource.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ """
+ Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+ See https://llvm.org/LICENSE.txt for license information.
+--- llvm-toolchain-9-9.0.1.orig/lldb/utils/test/disasm.py
++++ llvm-toolchain-9-9.0.1/lldb/utils/test/disasm.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """
+ Run gdb to disassemble a function, feed the bytes to 'llvm-mc -disassemble' command,
+--- llvm-toolchain-9-9.0.1.orig/lldb/utils/test/lldb-disasm.py
++++ llvm-toolchain-9-9.0.1/lldb/utils/test/lldb-disasm.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """
+ Run lldb to disassemble all the available functions for an executable image.
+--- llvm-toolchain-9-9.0.1.orig/lldb/utils/test/llvm-mc-shell.py
++++ llvm-toolchain-9-9.0.1/lldb/utils/test/llvm-mc-shell.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """
+ Run llvm-mc interactively.
+--- llvm-toolchain-9-9.0.1.orig/lldb/utils/test/ras.py
++++ llvm-toolchain-9-9.0.1/lldb/utils/test/ras.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """
+ Run the test suite and send the result as an email message.
+--- llvm-toolchain-9-9.0.1.orig/lldb/utils/test/run-dis.py
++++ llvm-toolchain-9-9.0.1/lldb/utils/test/run-dis.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """
+ Run lldb disassembler on all the binaries specified by a combination of root dir
+--- llvm-toolchain-9-9.0.1.orig/lldb/utils/test/run-until-faulted.py
++++ llvm-toolchain-9-9.0.1/lldb/utils/test/run-until-faulted.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """
+ Run a program via lldb until it fails.
+--- llvm-toolchain-9-9.0.1.orig/llgo/third_party/gofrontend/libffi/generate-darwin-source-and-headers.py
++++ llvm-toolchain-9-9.0.1/llgo/third_party/gofrontend/libffi/generate-darwin-source-and-headers.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ import subprocess
+ import os
+ import errno
+--- llvm-toolchain-9-9.0.1.orig/llvm/examples/Kaleidoscope/MCJIT/cached/genk-timing.py
++++ llvm-toolchain-9-9.0.1/llvm/examples/Kaleidoscope/MCJIT/cached/genk-timing.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ from __future__ import print_function
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/examples/Kaleidoscope/MCJIT/cached/split-lib.py
++++ llvm-toolchain-9-9.0.1/llvm/examples/Kaleidoscope/MCJIT/cached/split-lib.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ from __future__ import print_function
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/examples/Kaleidoscope/MCJIT/complete/genk-timing.py
++++ llvm-toolchain-9-9.0.1/llvm/examples/Kaleidoscope/MCJIT/complete/genk-timing.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ from __future__ import print_function
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/examples/Kaleidoscope/MCJIT/complete/split-lib.py
++++ llvm-toolchain-9-9.0.1/llvm/examples/Kaleidoscope/MCJIT/complete/split-lib.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ from __future__ import print_function
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/examples/Kaleidoscope/MCJIT/lazy/genk-timing.py
++++ llvm-toolchain-9-9.0.1/llvm/examples/Kaleidoscope/MCJIT/lazy/genk-timing.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ from __future__ import print_function
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/test/BugPoint/compile-custom.ll.py
++++ llvm-toolchain-9-9.0.1/llvm/test/BugPoint/compile-custom.ll.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ from __future__ import print_function
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/test/Other/opt-bisect-helper.py
++++ llvm-toolchain-9-9.0.1/llvm/test/Other/opt-bisect-helper.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ from __future__ import print_function
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/test/TableGen/JSON-check.py
++++ llvm-toolchain-9-9.0.1/llvm/test/TableGen/JSON-check.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ import sys
+ import subprocess
+--- llvm-toolchain-9-9.0.1.orig/llvm/test/tools/llvm-readobj/Inputs/relocs.py
++++ llvm-toolchain-9-9.0.1/llvm/test/tools/llvm-readobj/Inputs/relocs.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ from __future__ import print_function
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/tools/opt-viewer/opt-diff.py
++++ llvm-toolchain-9-9.0.1/llvm/tools/opt-viewer/opt-diff.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ from __future__ import print_function
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/tools/opt-viewer/opt-stats.py
++++ llvm-toolchain-9-9.0.1/llvm/tools/opt-viewer/opt-stats.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ from __future__ import print_function
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/tools/opt-viewer/opt-viewer.py
++++ llvm-toolchain-9-9.0.1/llvm/tools/opt-viewer/opt-viewer.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ from __future__ import print_function
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/tools/opt-viewer/optrecord.py
++++ llvm-toolchain-9-9.0.1/llvm/tools/opt-viewer/optrecord.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ from __future__ import print_function
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/Reviewing/find_interesting_reviews.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/Reviewing/find_interesting_reviews.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ from __future__ import print_function
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/Target/ARM/analyze-match-table.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/Target/ARM/analyze-match-table.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ from __future__ import print_function
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/abtest.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/abtest.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ #
+ # Given a previous good compile narrow down miscompiles.
+ # Expects two directories named "before" and "after" each containing a set of
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/benchmark/tools/compare.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/benchmark/tools/compare.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """
+ compare.py - versatile benchmark output compare tool
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/benchmark/tools/strip_asm.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/benchmark/tools/strip_asm.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """
+ strip_asm.py - Cleanup ASM output for the specified file
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/bugpoint_gisel_reducer.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/bugpoint_gisel_reducer.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """Reduces GlobalISel failures.
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/chunk-print-before-all.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/chunk-print-before-all.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ # Given a -print-before-all -print-module-scope log from an opt invocation,
+ # chunk it into a series of individual IR files, one for each pass invocation.
+ # If the log ends with an obvious stack trace, try to split off a separate
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/create_ladder_graph.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/create_ladder_graph.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ """A ladder graph creation program.
+ 
+ This is a python program that creates c source code that will generate
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/extract_symbols.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/extract_symbols.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """A tool for extracting a list of symbols to export
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/extract_vplan.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/extract_vplan.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ # This script extracts the VPlan digraphs from the vectoriser debug messages
+ # and saves them in individual dot files (one for each plan). Optionally, and
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/gn/build/run_tablegen.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/gn/build/run_tablegen.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ """Runs tablegen."""
+ 
+ import subprocess
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/gn/build/symlink_or_copy.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/gn/build/symlink_or_copy.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """Symlinks, or on Windows copies, an existing file to a second location.
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/gn/build/sync_source_lists_from_cmake.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/gn/build/sync_source_lists_from_cmake.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """Helps to keep BUILD.gn files in sync with the corresponding CMakeLists.txt.
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/gn/build/write_cmake_config.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/gn/build/write_cmake_config.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ """Emulates the bits of CMake's configure_file() function needed in LLVM.
+ 
+ The CMake build uses configure_file() for several things.  This emulates that
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/gn/build/write_vcsrevision.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/gn/build/write_vcsrevision.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """Gets the current revision and writes it to VCSRevision.h."""
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/gn/get.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/gn/get.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ """Downloads a prebuilt gn binary to a place where gn.py can find it."""
+ 
+ from __future__ import print_function
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/gn/gn.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/gn/gn.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ """Calls `gn` with the right --dotfile= and --root= arguments for LLVM."""
+ 
+ # GN normally expects a file called '.gn' at the root of the repository.
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/indirect_calls.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/indirect_calls.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """A tool for looking for indirect jumps and calls in x86 binaries.
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/lit/lit.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/lit/lit.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ import sys
+ 
+ from lit.main import main
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/lit/lit/ProgressBar.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/lit/lit/ProgressBar.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ # Source: http://code.activestate.com/recipes/475116/, with
+ # modifications by Daniel Dunbar.
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/lit/lit/main.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/lit/lit/main.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """
+ lit - LLVM Integrated Tester.
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/lit/tests/Inputs/googletest-format/DummySubDir/OneTest.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/lit/tests/Inputs/googletest-format/DummySubDir/OneTest.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ import sys
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/lit/tests/Inputs/googletest-timeout/DummySubDir/OneTest.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/lit/tests/Inputs/googletest-timeout/DummySubDir/OneTest.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ import sys
+ import time
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/lit/tests/Inputs/googletest-upstream-format/DummySubDir/OneTest.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/lit/tests/Inputs/googletest-upstream-format/DummySubDir/OneTest.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ import sys
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/lit/tests/Inputs/shtest-env/print_environment.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/lit/tests/Inputs/shtest-env/print_environment.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ from __future__ import print_statement
+ import os
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/lit/tests/Inputs/shtest-format/external_shell/write-bad-encoding.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/lit/tests/Inputs/shtest-format/external_shell/write-bad-encoding.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ import sys
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/lit/tests/Inputs/shtest-shell/check_args.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/lit/tests/Inputs/shtest-shell/check_args.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ import argparse
+ import platform
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/lit/tests/Inputs/shtest-shell/check_path.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/lit/tests/Inputs/shtest-shell/check_path.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ from __future__ import print_function
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/lit/tests/Inputs/shtest-shell/write-to-stderr.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/lit/tests/Inputs/shtest-shell/write-to-stderr.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ import sys
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/lit/tests/Inputs/shtest-shell/write-to-stdout-and-stderr.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/lit/tests/Inputs/shtest-shell/write-to-stdout-and-stderr.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ import sys
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/llvm-gisel-cov.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/llvm-gisel-cov.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ """
+ Summarize the information in the given coverage files.
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/prepare-code-coverage-artifact.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/prepare-code-coverage-artifact.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ from __future__ import print_function
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/release/findRegressions-nightly.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/release/findRegressions-nightly.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ from __future__ import print_function
+ 
+ import re, string, sys, os, time
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/release/findRegressions-simple.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/release/findRegressions-simple.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ from __future__ import print_function
+ import re, string, sys, os, time, math
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/shuffle_fuzz.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/shuffle_fuzz.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """A shuffle vector fuzz tester.
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/shuffle_select_fuzz_tester.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/shuffle_select_fuzz_tester.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """A shuffle-select vector fuzz tester.
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/sort_includes.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/sort_includes.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """Script to sort the top-most block of #include lines.
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/unicode-case-fold.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/unicode-case-fold.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ """
+ Unicode case folding database conversion utility
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/update_analyze_test_checks.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/update_analyze_test_checks.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """A script to generate FileCheck statements for 'opt' analysis tests.
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/update_llc_test_checks.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/update_llc_test_checks.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """A test case update script.
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/update_mca_test_checks.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/update_mca_test_checks.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """A test case update script.
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/update_mir_test_checks.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/update_mir_test_checks.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """Updates FileCheck checks in MIR tests.
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/update_test_checks.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/update_test_checks.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """A script to generate FileCheck statements for 'opt' regression tests.
+ 
+--- llvm-toolchain-9-9.0.1.orig/llvm/utils/wciia.py
++++ llvm-toolchain-9-9.0.1/llvm/utils/wciia.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ """
+ wciia - Whose Code Is It Anyway
diff --git a/debian/patches/series b/debian/patches/series
index 479bcc08..a22aeb16 100644
--- a/debian/patches/series
+++ b/debian/patches/series
@@ -139,3 +139,4 @@ no-z3.patch
 
 # bug #946874
 D71028-mips-rust-test.diff
+python3-shebang.patch