Provide a more extensive default bootstrap beeware#2006

pyproject.toml

@@ -230,6 +230,9 @@ filterwarnings = [
     "error",
 ]
 
+[tool.briefcase]
+bootstraps = ["toga", "empty"]  # Add "empty" to the list of bootstraps
+
 # need to ensure build directories aren't excluded from recursion
 norecursedirs = []
 

src/briefcase/bootstraps/empty/empty.toml

@@ -0,0 +1,22 @@
+# Configuration for an empty bootstrap
+
+# macOS configuration
+[macOS]
+# Delete the next line to support macOS
+supported = false
+requires = [
+    # Python requirements for macOS
+]
+
+# Linux configuration
+[Linux]
+system_requires = [
+    # System packages needed to run the app on Linux
+]
+system_runtime_requires = [
+    # System runtime packages needed to run the app on Linux
+]
+
+# Windows configuration
+[Windows]
+# Add any platform-specific configuration here

src/briefcase/commands/convert.py

@@ -593,17 +593,19 @@ def build_app_context(self, project_overrides):
             "license": project_license,
         }
 
-    def build_gui_context(
-        self,
-        context: dict[str, str],
-        project_overrides: dict[str, str],
-    ) -> dict[str, str]:
-        # We must set the GUI-framework to None here since the convert-command uses the new-command
-        # template. This template includes dependencies for the GUI-frameworks. However, if a project
-        # already is set up for a GUI-framework, then those dependencies should already be listed.
-        # To prevent the same dependency being listed twice (once in the PEP621-section and once in the
-        # briefcase-section), possibly with different versions, we set the GUI-framework to None here.
-        return {"gui_framework": "None"}
+    def build_gui_context(self, app, platform, output_format):
+        if app.gui_framework == "empty":
+            #Handle the empty bootstrap option
+            context = {
+                "platform": platform,
+                "output_format": output_format,
+                #Add any context that is needed for the empty bootstrap
+            }
+        else:
+            #Existing logic for Toga or other frameworks
+            context = super().build_gui_context(app, platform, output_format)
+
+        return context
 
     def merge_or_copy_pyproject(self, briefcase_config_file: Path) -> None:
         """Merge pyproject.toml file made by the cookiecutter with the one in the

src/briefcase/commands/new.py

@@ -583,7 +583,13 @@ def build_app_context(self, project_overrides: dict[str, str]) -> dict[str, str]
             "url": url,
             "license": project_license,
         }
-
+    #Added modify GUI choices 
+    def _gui_bootstrap_choices(self):
+        return [
+            ("toga", "Toga (Recommended)"),
+            ("empty", "Empty (Barebones configuration)"),  # Add this line
+        ]
+
     def build_gui_context(
         self,
         context: dict[str, str],