diff --git a/tools/python/package_annotations.bzl b/tools/python/package_annotations.bzl
new file mode 100644
index 0000000..b359d72
--- /dev/null
+++ b/tools/python/package_annotations.bzl
@@ -0,0 +1,12 @@
+load("@rules_python//python:pip.bzl", "package_annotation")
+
+ANNOTATIONS = {
+    "matplotlib": package_annotation(
+        data = ["@gtk_runtime//:gtk_runtime"],
+        deps = ["@bazel_tools//tools/python/runfiles"],
+    ),
+    "pygobject": package_annotation(
+        data = ["@gtk_runtime//:gtk_runtime"],
+        deps = ["@bazel_tools//tools/python/runfiles"],
+    ),
+}
diff --git a/tools/python/patches.json b/tools/python/patches.json
new file mode 100644
index 0000000..bfda933
--- /dev/null
+++ b/tools/python/patches.json
@@ -0,0 +1,14 @@
+{
+    "matplotlib": {
+        "patches": [
+            "//third_party:python/matplotlib/init.patch"
+        ],
+        "patch_args": ["-p1"]
+    },
+    "pygobject": {
+        "patches": [
+            "//third_party:python/pygobject/init.patch"
+        ],
+        "patch_args": ["-p1"]
+    }
+}
diff --git a/tools/python/runtime_binary.sh b/tools/python/runtime_binary.sh
index 1a4b3dc..6dc34c1 100755
--- a/tools/python/runtime_binary.sh
+++ b/tools/python/runtime_binary.sh
@@ -23,7 +23,11 @@
 for path in ${PYTHONPATH//:/ }; do
   if [[ "$path" == *.runfiles/python3_9_x86_64-unknown-linux-gnu ]]; then
     PYTHON_BIN="$path"/bin/python3
-    export LD_LIBRARY_PATH="$path"/lib
+    LD_LIBRARY_PATH=":${path}/lib"
+    LD_LIBRARY_PATH+=":${path}/../gtk_runtime/lib/x86_64-linux-gnu"
+    LD_LIBRARY_PATH+=":${path}/../gtk_runtime/usr/lib/x86_64-linux-gnu"
+    LD_LIBRARY_PATH+=":${path}/../gtk_runtime/usr/lib"
+    export LD_LIBRARY_PATH
     break
   elif [[ "$path" == *.runfiles/python_repo ]]; then
     PYTHON_BIN="$path"/usr/bin/python3