From f94cecf640664fd9dd3bbc6cc38b216a5551825a Mon Sep 17 00:00:00 2001
From: sterni <sternenseemann@systemli.org>
Date: Tue, 23 Jun 2026 14:18:49 +0200
Subject: [PATCH] haskell.packages.ghc910.stack: remove compat code

Ideally, we won't use this going forward and just build stack with GHC 9.12
---
 .../configuration-ghc-9.10.x.nix              | 45 -------------------
 1 file changed, 45 deletions(-)

diff --git a/pkgs/development/haskell-modules/configuration-ghc-9.10.x.nix b/pkgs/development/haskell-modules/configuration-ghc-9.10.x.nix
index 24cb5648c3ca..98800be59996 100644
--- a/pkgs/development/haskell-modules/configuration-ghc-9.10.x.nix
+++ b/pkgs/development/haskell-modules/configuration-ghc-9.10.x.nix
@@ -75,51 +75,6 @@ in
   # “Unfortunately we are unable to support GHC 9.10.”
   apply-refact = dontDistribute (markBroken super.apply-refact);
 
-  stack =
-    # Setup.hs depends on Cabal-syntax >= 3.14
-    overrideCabal
-      (drv: {
-        setupHaskellDepends = drv.setupHaskellDepends or [ ] ++ [
-          self.Cabal-syntax_3_14_2_0
-          self.Cabal_3_14_2_0
-        ];
-        # We need to tell GHC to ignore the Cabal core libraries while
-        # compiling Setup.hs since it depends on Cabal >= 3.14.
-        # ATTN: This override assumes we are using GHC 9.10.3 since we need
-        # to give an exact Cabal version at the GHC (!) command line.
-        # FIXME(@sternenseemann): make direct argument to generic-builder.nix
-        env = drv.env or { } // {
-          setupCompileFlags = lib.concatStringsSep " " [
-            "-hide-package"
-            "Cabal-syntax-3.12.1.0"
-            "-hide-package"
-            "Cabal-3.12.1.0"
-          ];
-        };
-      })
-
-      # Stack itself depends on Cabal >= 3.14 which also needs to be updated for deps
-      (
-        super.stack.overrideScope (
-          sself: ssuper:
-          let
-            upgradeCabal =
-              drv:
-              lib.pipe drv [
-                (addBuildDepends [ sself.Cabal_3_14_2_0 ])
-                (appendConfigureFlags [ "--constraint=Cabal>=3.14" ])
-              ];
-          in
-          {
-            pantry = upgradeCabal ssuper.pantry;
-            rio-prettyprint = upgradeCabal ssuper.rio-prettyprint;
-            hackage-security = upgradeCabal ssuper.hackage-security;
-            hpack = upgradeCabal sself.hpack_0_39_1;
-            stack = upgradeCabal ssuper.stack;
-          }
-        )
-      );
-
   #
   # Version upgrades
   #