Allow an Empty templates directory

Fixes #2150

CHANGELOG.md

@@ -1,7 +1,5 @@
 # Changelog
 
-## 0.18.0 (unreleased)
-
 ## 0.17.2 (2023-03-19)
 
 - Fix one more invalid error with colocated directories

components/templates/src/lib.rs

@@ -5,7 +5,7 @@ use std::path::Path;
 
 use config::Config;
 use libs::once_cell::sync::Lazy;
-use libs::tera::{Context, Tera};
+use libs::tera::{self, Context, Tera};
 
 use errors::{bail, Context as ErrorContext, Result};
 use utils::templates::rewrite_theme_paths;
@@ -47,8 +47,15 @@ pub fn load_tera(path: &Path, config: &Config) -> Result<Tera> {
 
     // Only parsing as we might be extending templates from themes and that would error
     // as we haven't loaded them yet
-    let mut tera =
-        Tera::parse(&tpl_glob).context("Error parsing templates from the /templates directory")?;
+    let mut tera = match Tera::parse(&tpl_glob) {
+        Ok(t) => t,
+        Err(e) if matches!(e.kind, tera::ErrorKind::Io(std::io::ErrorKind::NotFound)) => {
+            Tera::default()
+        }
+        Err(e) => {
+            return Err(e).context("Error parsing templates from the /templates directory");
+        }
+    };
 
     if let Some(ref theme) = config.theme {
         // Test that the templates folder exist for that theme