Recurse submodules

src/git.rs

@@ -119,7 +119,12 @@ fn clone_dirty<P: AsRef<Path>>(url: &str, place: P) -> Result<()> {
     }
 
     let command = Command::new("git")
-        .args(&["clone", &url, &place.display().to_string()])
+        .args(&[
+              "clone",
+              "--recurse-submodules",
+              &url,
+              &place.display().to_string()
+        ])
         .stderr(Stdio::null())
         .status();