fix git submodule update command with :p flag
@@ -555,7 +555,7 @@ int main(int argc, const char **argv) {
(os/cd module-dir)
(try
(with-dyns [:rules @{}]
- (os/execute ["git" "submodule" "update" "--init" "--recursive"])
+ (os/execute ["git" "submodule" "update" "--init" "--recursive"] :p)
(import-rules "./project.janet")
(do-rule "install-deps")
(do-rule "build")
