diff -r 0fabd0b5914c -r cc0c6a8d0933 src/metaprogramming.rs
--- a/src/metaprogramming.rs	Thu May 01 01:55:57 2025 -0500
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,54 +0,0 @@
-/*!
-Metaprogramming tools
-*/
-
-/// Reference `x` if so indicated by the first parameter.
-/// Typically to be used from another macro.
-///
-/// ```ignore
-/// maybe_ref!(ref, V)   // ➡ &V
-/// maybe_ref!(noref, V) // ➡ V
-/// ```
-macro_rules! maybe_ref {
-    (ref, $x:expr) => {
-        &$x
-    };
-    (noref, $x:expr) => {
-        $x
-    };
-    (ref, $x:ty) => {
-        &$x
-    };
-    (noref, $x:ty) => {
-        $x
-    };
-}
-
-/// Choose `a` if first argument is the literal `ref`, otherwise `b`.
-// macro_rules! ifref {
-//     (noref, $a:expr, $b:expr) => {
-//         $b
-//     };
-//     (ref, $a:expr, $b:expr) => {
-//         $a
-//     };
-// }
-
-/// Annotate `x` with a lifetime if the first parameter
-/// Typically to be used from another macro.
-///
-/// ```ignore
-/// maybe_ref!(ref, &'a V)    // ➡ &'a V
-/// maybe_ref!(noref, &'a V)  // ➡ V
-/// ```
-macro_rules! maybe_lifetime {
-    (ref, $x:ty) => {
-        $x
-    };
-    (noref, &$lt:lifetime $x:ty) => {
-        $x
-    };
-    (noref, &$x:ty) => {
-        $x
-    };
-}