fix param2 on ascii

Author: gares

apps/derive/tests/test_derive.v

@@ -164,3 +164,7 @@ Inductive wimpls {A} `{rtree A} := Kwi (x:A) (y : x = x) : wimpls | Kwa.
 About wimpls.wimpls.
 About wimpls.Kwi.
 Check Kwi _ (refl_equal 3).
+
+From Coq Require Ascii.
+
+#[only(param2)] derive Ascii.ascii.

apps/derive/theories/derive/param2.v

@@ -54,8 +54,8 @@ Elpi Accumulate lp:{{
 Elpi Typecheck.
 
 (* hook into derive *)
-Elpi Accumulate derive Db derive.param2.db.
 Elpi Accumulate derive File param2.
+Elpi Accumulate derive Db derive.param2.db.
 Elpi Accumulate derive lp:{{
 
 derivation T N (derive "param2" (derive.param2.main T N) (param-done T)).