Make proof tree building generic

Author: compiler-errors

Cargo.lock

@@ -4759,6 +4759,7 @@ name = "rustc_trait_selection"
 version = "0.0.0"
 dependencies = [
  "bitflags 2.5.0",
+ "derivative",
  "itertools 0.12.1",
  "rustc_ast",
  "rustc_ast_ir",
@@ -4778,6 +4779,7 @@ dependencies = [
  "rustc_span",
  "rustc_target",
  "rustc_transmute",
+ "rustc_type_ir",
  "smallvec",
  "tracing",
 ]

compiler/rustc_trait_selection/Cargo.toml

@@ -6,6 +6,7 @@ edition = "2021"
 [dependencies]
 # tidy-alphabetical-start
 bitflags = "2.4.1"
+derivative = "2.2.0"
 itertools = "0.12"
 rustc_ast = { path = "../rustc_ast" }
 rustc_ast_ir = { path = "../rustc_ast_ir" }
@@ -25,6 +26,7 @@ rustc_session = { path = "../rustc_session" }
 rustc_span = { path = "../rustc_span" }
 rustc_target = { path = "../rustc_target" }
 rustc_transmute = { path = "../rustc_transmute", features = ["rustc"] }
+rustc_type_ir = { path = "../rustc_type_ir" }
 smallvec = { version = "1.8.1", features = ["union", "may_dangle"] }
 tracing = "0.1"
 # tidy-alphabetical-end

compiler/rustc_trait_selection/src/solve/eval_ctxt/mod.rs

@@ -95,7 +95,7 @@ pub struct EvalCtxt<'a, 'tcx> {
     // evaluation code.
     tainted: Result<(), NoSolution>,
 
-    pub(super) inspect: ProofTreeBuilder<'tcx>,
+    pub(super) inspect: ProofTreeBuilder<TyCtxt<'tcx>>,
 }
 
 #[derive(PartialEq, Eq, Debug, Hash, HashStable, Clone, Copy)]
@@ -194,7 +194,7 @@ impl<'a, 'tcx> EvalCtxt<'a, 'tcx> {
         tcx: TyCtxt<'tcx>,
         search_graph: &'a mut search_graph::SearchGraph<'tcx>,
         canonical_input: CanonicalInput<'tcx>,
-        canonical_goal_evaluation: &mut ProofTreeBuilder<'tcx>,
+        canonical_goal_evaluation: &mut ProofTreeBuilder<TyCtxt<'tcx>>,
         f: impl FnOnce(&mut EvalCtxt<'_, 'tcx>, Goal<'tcx, ty::Predicate<'tcx>>) -> R,
     ) -> R {
         let intercrate = match search_graph.solver_mode() {
@@ -256,7 +256,7 @@ impl<'a, 'tcx> EvalCtxt<'a, 'tcx> {
         tcx: TyCtxt<'tcx>,
         search_graph: &'a mut search_graph::SearchGraph<'tcx>,
         canonical_input: CanonicalInput<'tcx>,
-        goal_evaluation: &mut ProofTreeBuilder<'tcx>,
+        goal_evaluation: &mut ProofTreeBuilder<TyCtxt<'tcx>>,
     ) -> QueryResult<'tcx> {
         let mut canonical_goal_evaluation =
             goal_evaluation.new_canonical_goal_evaluation(canonical_input);