From https://github.com/well-typed/ixset-typed/commit/085cccbaa845bff4255028ed5ff71402e98a953a
From: Clint Adams <clint@debian.org>
Date: Mon, 5 Feb 2024 19:41:29 -0500
Subject: [PATCH] Compatibility with template-haskell 2.21

---
 ixset-typed.cabal       | 2 +-
 src/Data/IxSet/Typed.hs | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/ixset-typed.cabal b/ixset-typed.cabal
index 5df3b3e..2f6dee9 100644
--- a/ixset-typed.cabal
+++ b/ixset-typed.cabal
@@ -38,7 +38,7 @@ library
                      deepseq          >= 1.3 && < 2,
                      safecopy         >= 0.8 && < 0.11,
                      syb              >= 0.4 && < 1,
-                     template-haskell >= 2.8 && < 2.21
+                     template-haskell >= 2.8 && < 2.22
 
   hs-source-dirs:    src
   exposed-modules:
diff --git a/src/Data/IxSet/Typed.hs b/src/Data/IxSet/Typed.hs
index ffaa096..8a25fb4 100644
--- a/src/Data/IxSet/Typed.hs
+++ b/src/Data/IxSet/Typed.hs
@@ -607,7 +607,7 @@ inferIxSet ixset typeName calName entryPoints
            _ -> error "IxSet.inferIxSet calInfo unexpected match"
 
 #if MIN_VERSION_template_haskell(2,17,0)
-tyVarBndrToName :: TyVarBndr () -> Name
+tyVarBndrToName :: TyVarBndr flag -> Name
 tyVarBndrToName (PlainTV nm _) = nm
 tyVarBndrToName (KindedTV nm _ _) = nm
 #else