clone: --bundle-uri cannot be combined with --depth

The previous change added the '--bundle-uri' option, but did not check
if the --depth parameter was included. Since bundles are not compatible
with shallow clones, provide an error message to the user who is
attempting this combination.

I am leaving this as its own change, separate from the one that
implements '--bundle-uri', because this is more of an advisory for the
user. There is nothing wrong with bootstrapping with bundles and then
fetching a shallow clone. However, that is likely going to involve too
much work for the client _and_ the server. The client will download all
of this bundle information containing the full history of the
repository only to ignore most of it. The server will get a shallow
fetch request, but with a list of haves that might cause a more painful
computation of that shallow pack-file.

RFC-TODO: add a test case for this error message.

Signed-off-by: Derrick Stolee <[email protected]>

Author: derrickstolee

builtin/clone.c

@@ -926,6 +926,11 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
 		option_no_checkout = 1;
 	}
 
+	if (bundle_uri) {
+		if (deepen)
+			die(_("--bundle-uri is incompatible with --depth, --shallow-since, and --shallow-exclude"));
+	}
+
 	repo_name = argv[0];
 
 	path = get_repo_path(repo_name, &is_bundle);