caddy-proxy: I have a feeling the snippet import thingy is not working

modules/caddy-proxy/default.nix

@@ -22,11 +22,18 @@ let
     };
   };
 
+  cloudflare-tls = ''
+    tls {
+      dns cloudflare {env.CF_API_TOKEN}
+      propagation_timeout -1
+    }
+  '';
+
   mkProxyHost = target: {
     extraConfig = ''
       reverse_proxy ${target}
 
-      import cloudflare-tls
+      ${cloudflare-tls}
     '';
   };
 
@@ -42,7 +49,7 @@ let
         error "Nope." 403
       }
 
-      import cloudflare-tls
+      ${cloudflare-tls}
     '';
   };
 in
@@ -65,14 +72,7 @@ in
 
       acmeCA = "https://acme-v02.api.letsencrypt.org/directory";
 
-      extraConfig = ''
-        (cloudflare-tls) {
-            tls {
-                dns cloudflare {env.CF_API_TOKEN}
-                propagation_timeout -1
-            }
-        }
-      '';
+      extraConfig = '''';
 
       virtualHosts = builtins.listToAttrs (
         map (