Normalize wheel distribution names to match the PyPA spec

src/build_context.rs

@@ -1035,14 +1035,6 @@ impl BuildContext {
 
         if self.target.is_wasi() {
             eprintln!("⚠️  Warning: wasi support is experimental");
-            // escaped can contain [\w\d.], but i don't know how we'd handle dots correctly here
-            if self.metadata24.get_distribution_escaped().contains('.') {
-                bail!(
-                    "Can't build wasm wheel if there is a dot in the name ('{}')",
-                    self.metadata24.get_distribution_escaped()
-                )
-            }
-
             if !self.metadata24.entry_points.is_empty() {
                 bail!("You can't define entrypoints yourself for a binary project");
             }

src/metadata.rs

@@ -652,11 +652,17 @@ impl Metadata24 {
         Ok(out)
     }
 
-    /// Returns the distribution name according to PEP 427, Section "Escaping
-    /// and Unicode"
+    /// Returns the distribution name normalized according to the PyPA Binary
+    /// Distribution Format specification.
+    ///
+    /// This is the name that will be used in the wheel filename and for the
+    /// `.dist-info` directory name. It is also the name that will be used in
+    /// the source distribution (sdist) filename.
+    ///
+    /// See https://packaging.python.org/en/latest/specifications/binary-distribution-format/#escaping-and-unicode
     pub fn get_distribution_escaped(&self) -> String {
-        let re = Regex::new(r"[^\w\d.]+").unwrap();
-        re.replace_all(&self.name, "_").to_string()
+        let re = Regex::new(r"[-_.]+").unwrap();
+        re.replace_all(&self.name, "_").to_lowercase()
     }
 
     /// Returns the version encoded according to PEP 427, Section "Escaping