From 94bea3ebe589c26f484ead729915acb5a598b49e Mon Sep 17 00:00:00 2001
From: Camille GILLOT <gillot.camille@gmail.com>
Date: Sun, 3 Aug 2025 23:11:01 +0000
Subject: [PATCH] Cache param_env on disk.

---
 compiler/rustc_middle/src/query/mod.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/compiler/rustc_middle/src/query/mod.rs b/compiler/rustc_middle/src/query/mod.rs
index 2941808e806f8..1754e492071a3 100644
--- a/compiler/rustc_middle/src/query/mod.rs
+++ b/compiler/rustc_middle/src/query/mod.rs
@@ -1635,6 +1635,7 @@ rustc_queries! {
     /// then you should take a `TypingEnv` to ensure that you handle opaque types correctly.
     query param_env(def_id: DefId) -> ty::ParamEnv<'tcx> {
         desc { |tcx| "computing normalized predicates of `{}`", tcx.def_path_str(def_id) }
+        cache_on_disk_if { true }
         feedable
     }