Clean way to patch the std

crates/std/src/sys/args/unsupported.rs

@@ -0,0 +1,42 @@
+use crate::ffi::OsString;
+use crate::fmt;
+
+pub struct Args {}
+
+pub fn args() -> Args {
+    Args {}
+}
+
+impl fmt::Debug for Args {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.debug_list().finish()
+    }
+}
+
+impl Iterator for Args {
+    type Item = OsString;
+
+    #[inline]
+    fn next(&mut self) -> Option<OsString> {
+        None
+    }
+
+    #[inline]
+    fn size_hint(&self) -> (usize, Option<usize>) {
+        (0, Some(0))
+    }
+}
+
+impl DoubleEndedIterator for Args {
+    #[inline]
+    fn next_back(&mut self) -> Option<OsString> {
+        None
+    }
+}
+
+impl ExactSizeIterator for Args {
+    #[inline]
+    fn len(&self) -> usize {
+        0
+    }
+}