refactor build.rs to collect and sort directory entries for determini…

…stic output
dzcode-io · Nov 21, 2024 · d70725c · d70725c
1 parent 3c63547
commit d70725c
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Showing 2 changed files with 1,087 additions and 1,083 deletions.
diff --git a/rust/build.rs b/rust/build.rs
@@ -83,22 +83,26 @@ mod r#static {
         };
 
         let sub_dirs = fs::read_dir(&dir).unwrap();
-        let children = sub_dirs.filter_map(|entry| {
-            let entry = entry.unwrap();
-            let ty = entry.file_type().unwrap();
-            if ty.is_dir() {
-                Some(dir_tree_to_list(entry.path()))
-            } else {
-                None
-            }
-        });
+        let mut children: Vec<(String, String)> = sub_dirs
+            .filter_map(|entry| {
+                let entry = entry.unwrap();
+                let ty = entry.file_type().unwrap();
+                if ty.is_dir() {
+                    Some(dir_tree_to_list(entry.path()))
+                } else {
+                    None
+                }
+            })
+            .collect();
+        // to ensure deterministic output on different platforms
+        children.sort();
 
         let mut constants = String::new();
         let mut matches = String::new();
-        children.for_each(|(c, m)| {
+        for (c, m) in children {
             constants.push_str(&c);
             matches.push_str(&m);
-        });
+        }
 
         (
             format!("{}{}", this_node, constants),