chore: add some more context to file errors around sass (and others)

Closes: trunk-rs#5

src/common.rs

@@ -162,12 +162,12 @@ pub async fn run_command(
         .stdout(Stdio::inherit())
         .stderr(Stdio::inherit())
         .spawn()
-        .with_context(|| format!("error spawning {} call", name))?
+        .with_context(|| format!("error spawning {name} call ({path})", path = path.display()))?
         .wait()
         .await
-        .with_context(|| format!("error during {} call", name))?;
+        .with_context(|| format!("error during {name} call"))?;
     if !status.success() {
-        bail!("{} call returned a bad status", name);
+        bail!("{name} call returned a bad status");
     }
     Ok(())
 }

src/pipelines/sass.rs

@@ -84,7 +84,9 @@ impl Sass {
         tracing::info!(path = ?rel_path, "compiling sass/scss");
         common::run_command(Application::Sass.name(), &sass, args).await?;
 
-        let css = fs::read_to_string(&file_path).await?;
+        let css = fs::read_to_string(&file_path)
+            .await
+            .with_context(|| format!("error reading CSS result file '{file_path}'"))?;
         fs::remove_file(&file_path).await?;
 
         // Check if the specified SASS/SCSS file should be inlined.
@@ -103,9 +105,12 @@ impl Sass {
             let file_path = self.cfg.staging_dist.join(&file_name);
 
             // Write the generated CSS to the filesystem.
-            fs::write(&file_path, css)
-                .await
-                .context("error writing SASS pipeline output")?;
+            fs::write(&file_path, css).await.with_context(|| {
+                format!(
+                    "error writing SASS pipeline output file '{}'",
+                    file_path.display()
+                )
+            })?;
 
             // Generate a hashed reference to the new CSS file.
             CssRef::File(file_name)