Move generating AST log to when a module is actually being parsed. (#8210)

* Move generating AST log to when a module is actually being parsed.

* Add changelog

Author: nojaf

CHANGELOG.md

@@ -35,6 +35,7 @@
 #### :nail_care: Polish
 
 - Formatter no longer writes files when contents are already correctly formatted. https://github.com/rescript-lang/rescript/pull/8209
+- Build system: Only log verbose "Generating AST for module" when actually parsing. https://github.com/rescript-lang/rescript/pull/8210
 
 #### :house: Internal
 

rewatch/src/build/parse.rs

@@ -24,7 +24,6 @@ pub fn generate_asts(
         .modules
         .par_iter()
         .map(|(module_name, module)| {
-            debug!("Generating AST for module: {module_name}");
             let package = build_state
                 .get_package(&module.package_name)
                 .expect("Package not found");
@@ -47,6 +46,7 @@ pub fn generate_asts(
                             .map(|i| i.parse_dirty)
                             .unwrap_or(false)
                     {
+                        debug!("Generating AST for module: {module_name}");
                         inc();
                         let ast_result = generate_ast(
                             package.to_owned(),