Inline the TailwindCLI into dx and run it during serve (#4086)

* wip: download the tailwind cli and then run it during serve
* allow no-downloads again

packages/cli/src/build/builder.rs

@@ -657,8 +657,6 @@ impl AppBuilder {
             None => self.build.asset_dir(),
         };
 
-        tracing::debug!("Hotreloading asset {changed_file:?} in target {asset_dir:?}");
-
         // Canonicalize the path as Windows may use long-form paths "\\\\?\\C:\\".
         let changed_file = dunce::canonicalize(changed_file)
             .inspect_err(|e| tracing::debug!("Failed to canonicalize hotreloaded asset: {e}"))
@@ -668,6 +666,8 @@ impl AppBuilder {
         let resource = artifacts.assets.assets.get(&changed_file)?;
         let output_path = asset_dir.join(resource.bundled_path());
 
+        tracing::debug!("Hotreloading asset {changed_file:?} in target {asset_dir:?}");
+
         // Remove the old asset if it exists
         _ = std::fs::remove_file(&output_path);
 
@@ -1310,6 +1310,6 @@ We checked the folder: {}
 
     /// Check if the queued build is blocking hotreloads
     pub(crate) fn can_receive_hotreloads(&self) -> bool {
-        matches!(&self.stage, BuildStage::Success)
+        matches!(&self.stage, BuildStage::Success | BuildStage::Failed)
     }
 }

packages/cli/src/build/request.rs

@@ -3758,4 +3758,14 @@ r#" <script>
             trimmed_path
         }
     }
+
+    /// Get the path to the package manifest directory
+    pub(crate) fn package_manifest_dir(&self) -> PathBuf {
+        self.workspace.krates[self.crate_package]
+            .manifest_path
+            .parent()
+            .unwrap()
+            .to_path_buf()
+            .into()
+    }
 }