This is a probably broken version of build.py

build.py

@@ -340,21 +340,38 @@ def build_intellisense_database_for_clangd():
     Path(f"{INTEGRATION}/.vscode/compile_commands.json").write_text(json.dumps(ccjson, indent=2))
 
 
+def run_generateprojectfiles_in_sandbox():
+    """
+    Unreal's GenerateProjectFiles does an absolutely terrible
+    job of generating project files for vscode.  It's so bad
+    that we've decided to just not use it at all.  But we
+    still sometimes want to look at the output, to see what
+    it would have generated.  We run GenerateProjectFiles
+    in a sandbox so it can't modify the real project.  Then,
+    we leave the output in the sandbox for inspection.  The
+    results don't affect our build system at all.
+    """
+    sandbox = Path(f"{INTEGRATION}/GPF-output")
+    if sandbox.exists():
+        shutil.rmtree(sandbox)
+    sandbox.mkdir()
+    (sandbox / "Integration.uproject").write_bytes(Path(f"{INTEGRATION}/Integration.uproject").read_bytes())
+    for name in ["Source", "Config", "Content"]:
+        (sandbox / name).symlink_to(f"../{name}")
+    shell(str(sandbox), f'{UNREALENGINE}/GenerateProjectFiles.{BAT} -projectfiles -project="{sandbox}/Integration.uproject" -game')
+    # Remove the symlinks and uproject copy, leaving only generated files
+    for name in ["Source", "Config", "Content", "Integration.uproject"]:
+        (sandbox / name).unlink()
+
+
 def generate_integration_code_workspace():
     """
     We build Integration.code-workspace from a template that we
     wrote ourselves, Integration.code-workspace.tpl.json.
-    We use UnrealBuildTool to generate Integration.code-workspace.ubt,
-    but we don't use it: we just keep it as a reference that you can
-    refer to when editing the template.
     """
     workspace = f"{INTEGRATION}/Integration.code-workspace"
-    workspace_ubt = f"{INTEGRATION}/Integration.code-workspace.ubt"
     template = f"{INTEGRATION}/Integration.code-workspace.tpl.json"
     Path(workspace).unlink(missing_ok=True)
-    Path(workspace_ubt).unlink(missing_ok=True)
-    shell(INTEGRATION, f'{UNREALENGINE}/GenerateProjectFiles.{BAT} -projectfiles -project="{INTEGRATION}/Integration.uproject" -game')
-    Path(workspace).rename(workspace_ubt)
     expand_json_file(template, workspace, CONFIG)
 
 
@@ -384,6 +401,7 @@ if MODE == "all":
     generate_lpx_paths()
     generate_integration_uproject()
     run_unrealengine_setup_bat_replacement()
+    run_generateprojectfiles_in_sandbox()
     build_unrealbuildtool()
     generate_integration_code_workspace()