From 049715fc1270a23a1b88671ac3cb50a6fc3842b7 Mon Sep 17 00:00:00 2001
From: Matthew Woehlke <matthew.woehlke@kitware.com>
Date: Thu, 2 Sep 2021 11:14:35 -0400
Subject: [PATCH] Disable Python debugging bits

Patch out use of python-dbg, which is not available for other Python
versions. This should be sufficient that Drake can build. However, due
to some nasty business with libcrypt, which for some reason is not used
by Python 3.6, but is required by Python 3.7, we are not yet able to
produce a PyPI-usable wheel.

See also https://github.com/pypa/manylinux/issues/305 for an explanation
of why this is broken.
---
 image/pip-drake.patch | 63 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)

diff --git a/image/pip-drake.patch b/image/pip-drake.patch
index 92eba52..fe0864b 100644
--- a/image/pip-drake.patch
+++ b/image/pip-drake.patch
@@ -182,3 +182,66 @@ index 7f41f9578..e0a227c46 100644
      else:
          fail("Operating system is NOT supported {}".format(os_result))
 
+diff --git a/tools/py_toolchain/BUILD.bazel b/tools/py_toolchain/BUILD.bazel
+index 411b638ff..891f51f8d 100644
+--- a/tools/py_toolchain/BUILD.bazel
++++ b/tools/py_toolchain/BUILD.bazel
+@@ -4,7 +4,6 @@ load("@rules_python//python:defs.bzl", "py_runtime", "py_runtime_pair")
+ load("//tools/lint:lint.bzl", "add_lint_tests")
+ load(
+     ":interpreter_paths.bzl",
+-    "LINUX_DBG_INTERPRETER_PATH",
+     "LINUX_INTERPRETER_PATH",
+     "MACOS_INTERPRETER_PATH",
+ )
+@@ -29,17 +28,6 @@ toolchain(
+     toolchain_type = "@rules_python//python:toolchain_type",
+ )
+
+-py_runtime(
+-    name = "linux_dbg_py3_runtime",
+-    interpreter_path = LINUX_DBG_INTERPRETER_PATH,
+-    python_version = "PY3",
+-)
+-
+-py_runtime_pair(
+-    name = "linux_dbg_py_runtime_pair",
+-    py3_runtime = ":linux_dbg_py3_runtime",
+-)
+-
+ # Typically this toolchain would be loaded manually using the
+ # --extra_toolchains command line option.
+ toolchain(
+diff --git a/tools/py_toolchain/interpreter_paths.bzl b/tools/py_toolchain/interpreter_paths.bzl
+index 1608e49b1..d6b5d5e07 100644
+--- a/tools/py_toolchain/interpreter_paths.bzl
++++ b/tools/py_toolchain/interpreter_paths.bzl
+@@ -2,13 +2,7 @@
+
+ # Default value of interpreter_path used by the py_runtime in the default
+ # Python toolchain registered on the @platforms//os:linux platform.
+-LINUX_INTERPRETER_PATH = "/usr/bin/python3"
+-
+-# Default value of interpreter_path used by the py_runtime in the Python debug
+-# toolchain registered on the @platforms//os:linux platform when the
+-# --extra_toolchains=//tools/py_toolchain:linux_dbg_toolchain command line
+-# option is given.
+-LINUX_DBG_INTERPRETER_PATH = "/usr/bin/python3-dbg"
++LINUX_INTERPRETER_PATH = "/usr/local/bin/python"
+
+ # Default value of interpreter_path used by the py_runtime in the default
+ # Python toolchain registered on the @platforms//os:osx platform.
+diff --git a/tools/ubuntu-bionic.bazelrc b/tools/ubuntu-bionic.bazelrc
+index ecb718e37..98b65b42c 100644
+--- a/tools/ubuntu-bionic.bazelrc
++++ b/tools/ubuntu-bionic.bazelrc
+@@ -1,9 +1,3 @@
+-build:_drd --extra_toolchains=//tools/py_toolchain:linux_dbg_toolchain
+-build:_helgrind --extra_toolchains=//tools/py_toolchain:linux_dbg_toolchain
+-
+-# TODO(jamiesnape): Builds with configuration "memcheck" should also use
+-# //tools/py_toolchain:linux_dbg_toolchain.
+-
+ # Configure ${PATH} for actions.
+ # N.B. Ensure this is consistent with `execute.bzl`.
+ build --action_env=PATH=/usr/bin:/bin