From 5de8b8530cb436118db192d90824bc6efdfda18a Mon Sep 17 00:00:00 2001
From: tv <tv@krebsco.de>
Date: Tue, 13 Sep 2022 21:22:15 +0200
Subject: haskell overrides: admit old overrides

---
 krebs/5pkgs/haskell/default.nix | 10 ++++++----
 tv/5pkgs/haskell/default.nix    | 12 ++++++++----
 2 files changed, 14 insertions(+), 8 deletions(-)

diff --git a/krebs/5pkgs/haskell/default.nix b/krebs/5pkgs/haskell/default.nix
index 98cbcb3b9..7e9ee7521 100644
--- a/krebs/5pkgs/haskell/default.nix
+++ b/krebs/5pkgs/haskell/default.nix
@@ -8,11 +8,13 @@ in
   haskell = super.haskell // {
     packages = mapAttrs (name: value:
       if hasAttr "override" value
-        then value.override { inherit overrides; }
+        then value.override (old: {
+          overrides = composeExtensions (old.overrides or (_: _: {})) overrides;
+        })
         else value
     ) super.haskell.packages;
   };
-  haskellPackages = super.haskellPackages.override {
-    inherit overrides;
-  };
+  haskellPackages = super.haskellPackages.override (old: {
+    overrides = composeExtensions (old.overrides or (_: _: {})) overrides;
+  });
 }
diff --git a/tv/5pkgs/haskell/default.nix b/tv/5pkgs/haskell/default.nix
index fcede2f9c..33fd2506a 100644
--- a/tv/5pkgs/haskell/default.nix
+++ b/tv/5pkgs/haskell/default.nix
@@ -10,11 +10,15 @@ in
     haskell = super.haskell // {
       packages = mapAttrs (name: value:
         if hasAttr "override" value
-          then value.override { inherit overrides; }
+          then value.override (old: {
+            overrides =
+              composeExtensions (old.overrides or (_: _: { })) overrides;
+          })
           else value
       ) super.haskell.packages;
     };
-    haskellPackages = super.haskellPackages.override {
-      inherit overrides;
-    };
+    haskellPackages = super.haskellPackages.override (old: {
+      overrides =
+        composeExtensions (old.overrides or (_: _: { })) overrides;
+    });
   }
-- 
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