Fix duplicated PATH entries

rust-lang · Sep 18, 2021 · d4f51e6 · d4f51e6
1 parent e3e5cc2
commit d4f51e6
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/src/env_var.rs b/src/env_var.rs
@@ -26,7 +26,12 @@ pub fn prepend_path(name: &str, value: Vec<PathBuf>, cmd: &mut Command) {
     let mut parts: Vec<PathBuf>;
     if let Some(ref v) = old_value {
         parts = value;
-        parts.extend(env::split_paths(v).collect::<Vec<_>>());
+        parts
+            .iter()
+            .filter(|&x| x != v)
+            .cloned()
+            .collect::<Vec<PathBuf>>()
+            .extend(env::split_paths(v).collect::<Vec<_>>());
     } else {
         parts = value;
     }