GP-5551: Detect and offer installation of missing Python packages.

Ghidra/Debug/Debugger-rmi-trace/data/support/gmodutils.py

@@ -0,0 +1,42 @@
+## ###
+# IP: GHIDRA
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+##
+"""
+This file holds utilities required by Python-based launch scripts. At
+the moment, that includes only the launchers on Windows, since they're
+just .bat files that invoke the .py file interactively. They require
+this utility to set up the PYTHONPATH before importing the actual
+connector's Python code.
+
+This file MUST remain in a predictable location relative to the
+working directory or module directory of the scripts needing it, so
+that minimal logic is required to get it loaded.
+
+This file CANNOT be assumed to be available on a remote target. For
+that, consider ghidratrace.setuputils.
+"""
+
+def ghidra_module_pypath(name: str) -> str:
+    installed = f'{home}/Ghidra/{name}/pypkg/src'
+    if os.path.isdir(installed):
+        return installed
+    dev1 = f'{home}/Ghidra/{name}/build/pypkg/src'
+    if os.path.isdir(dev1):
+        return dev1
+    dev2 = f'{home}/ghidra/Ghidra/{name}/build/pypkg/src'
+    if os.path.isdir(dev2):
+        return dev2
+    raise Exception(
+        f"Cannot find Python source for {name}. Try gradle assemblePyPackage?")