Assisted-by: GLM-5.3 via pi

diff --git a/src/error.rs b/src/error.rs
index fc0f986..59af5ec 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -4,16 +4,12 @@ use miette::Diagnostic;
 
 #[derive(Debug, thiserror::Error, Diagnostic)]
 pub enum Error {
-    #[error("failed to load config {}", .path.display())]
+    #[error("failed to load config")]
     #[diagnostic(
         code(parallax::config),
         help("the config must be a Fennel file; fix the reported syntax or validation error")
     )]
-    Config {
-        path: PathBuf,
-        #[source]
-        error: mlua::Error,
-    },
+    Config(#[from] mlua::Error),
 
     #[error("{} must call ({what} ...)", .path.display())]
     #[diagnostic(
diff --git a/src/parallax.rs b/src/parallax.rs
index 25a2a9f..81e5315 100644
--- a/src/parallax.rs
+++ b/src/parallax.rs
@@ -5,6 +5,7 @@ use std::sync::Arc;
 use std::sync::Mutex;
 use std::sync::MutexGuard;
 
+use mlua::ErrorContext as _;
 use mlua::Function;
 use mlua::Lua;
 use mlua::LuaSerdeExt as _;
@@ -61,10 +62,8 @@ impl Parallax {
             setup,
             server,
             flows,
-        } = run_config(&lua, &source, &filename, &stash).map_err(|error| Error::Config {
-            path: path.to_path_buf(),
-            error,
-        })?;
+        } = run_config(&lua, &source, &filename, &stash)
+            .with_context(|_| format!("loading {}", path.display()))?;
 
         let setup = setup.ok_or_else(|| Error::ConfigRegistration {
             path: path.to_path_buf(),