eh: add develop alias nd; prompt before auto-fixing hashes

Signed-off-by: NotAShelf <raf@notashelf.dev>
Change-Id: I74835b683e247c86e4907d4fe0eccba06a6a6964

eh/src/lib.rs

@@ -31,6 +31,11 @@ pub enum Command {
     #[arg(trailing_var_arg = true)]
     args: Vec<String>,
   },
+  /// Enter a Nix development shell
+  Develop {
+    #[arg(trailing_var_arg = true)]
+    args: Vec<String>,
+  },
   /// Update flake inputs interactively
   Update {
     #[arg(trailing_var_arg = true)]

eh/src/main.rs

@@ -32,7 +32,7 @@ fn handle_command(command: &str, args: &[String]) -> error::Result<i32> {
 
   match command {
     "update" => commands::update::handle_update(args),
-    "run" | "shell" | "build" => {
+    "run" | "shell" | "build" | "develop" => {
       commands::handle_nix_command(
         command,
         args,
@@ -55,6 +55,7 @@ fn dispatch_multicall(
     "nr" => "run",
     "ns" => "shell",
     "nb" => "build",
+    "nd" => "develop",
     "nu" => "update",
     _ => return None,
   };
@@ -104,6 +105,8 @@ fn run_app() -> error::Result<i32> {
 
     Some(Command::Build { args }) => handle_command("build", &args),
 
+    Some(Command::Develop { args }) => handle_command("develop", &args),
+
     Some(Command::Update { args }) => handle_command("update", &args),
 
     None => {

eh/src/util.rs

@@ -511,6 +511,22 @@ pub fn handle_nix_with_retry(
   // Check for hash mismatch errors
   if let Some(new_hash) = hash_extractor.extract_hash(&stderr) {
     let old_hash = hash_extractor.extract_old_hash(&stderr);
+
+    // Ask for confirmation before fixing hash
+    let should_fix = dialoguer::Confirm::new()
+      .with_prompt(format!(
+        "Hash mismatch detected for {}. Update hash in local .nix files?",
+        pkg.bold()
+      ))
+      .default(true)
+      .interact()
+      .map_err(|e| EhError::Io(std::io::Error::other(e)))?;
+
+    if !should_fix {
+      log_warn!("{}: hash fix cancelled by user", pkg.bold());
+      return Err(EhError::ProcessExit { code: 1 });
+    }
+
     match fixer.fix_hash_in_files(old_hash.as_deref(), &new_hash) {
       Ok(true) => {
         log_info!(