From 822abd9c8823db152154ed844e0622e762cb88fa Mon Sep 17 00:00:00 2001
From: Joseph O'Brien <98370624+89jobrien@users.noreply.github.com>
Date: Sat, 11 Apr 2026 23:51:43 -0400
Subject: [PATCH] fix(notfiles): atomic state file writes via temp-file +
 rename

Closes #17
---
 crates/notfiles/src/linker.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/crates/notfiles/src/linker.rs b/crates/notfiles/src/linker.rs
index 2e7605f..04685ce 100644
--- a/crates/notfiles/src/linker.rs
+++ b/crates/notfiles/src/linker.rs
@@ -39,9 +39,13 @@ impl State {
 
     pub fn save(&self, dotfiles_dir: &Path) -> Result<(), NotfilesError> {
         let path = dotfiles_dir.join(STATE_FILE);
+        let tmp_path = dotfiles_dir.join(format!("{STATE_FILE}.tmp"));
         let content = toml::to_string_pretty(self)
             .map_err(|e| NotfilesError::State(format!("serializing state: {e}")))?;
-        fs::write(&path, content)?;
+        fs::write(&tmp_path, content)
+            .map_err(|e| NotfilesError::State(format!("writing temp state: {e}")))?;
+        fs::rename(&tmp_path, &path)
+            .map_err(|e| NotfilesError::State(format!("renaming temp state: {e}")))?;
         Ok(())
     }