From 570df959e20b32884cb8ba62a6509257dbf20ce7 Mon Sep 17 00:00:00 2001
From: Gregor Kleen <gkleen@yggdrasil.li>
Date: Mon, 13 Dec 2021 15:38:16 +0100
Subject: ...

---
 overlays/zfs.nix | 22 +++++++++++++++-------
 1 file changed, 15 insertions(+), 7 deletions(-)

diff --git a/overlays/zfs.nix b/overlays/zfs.nix
index 1da10050..7291e2e4 100644
--- a/overlays/zfs.nix
+++ b/overlays/zfs.nix
@@ -1,13 +1,21 @@
-final: prev: {
+final: prev:
+let
+  overrides = {
+    "sha256-UUuJa5w/GsEvsgH/BnXFsP/dsOt9wwmPqKzDxLPrhiY=" = { self }: {
+      broken = !(self.kernel.kernelAtLeast "3.10" && self.kernel.kernelOlder "5.16");
+      latestCompatibleLinuxPackages = final.linuxPackages_5_15;
+    };
+  };
+in {
   linuxKernel = prev.linuxKernel // {
-    packagesFor = kernel_: (prev.linuxKernel.packagesFor kernel_).extend (self: super: {
+    packagesFor = kernel_: (prev.linuxKernel.packagesFor kernel_).extend (self: super: rec {
       zfsUnstable = super.zfsUnstable.overrideAttrs (oldAttrs: {
-        meta = oldAttrs.meta // (assert (oldAttrs.src.outputHash == "sha256-UUuJa5w/GsEvsgH/BnXFsP/dsOt9wwmPqKzDxLPrhiY="); rec {
-          broken = !(self.kernel.kernelAtLeast "3.10" && self.kernel.kernelOlder "5.16");
-          latestCompatibleLinuxPackages = final.linuxPackages_5_15;
-        });
+        meta = oldAttrs.meta // (overrides.${oldAttrs.src.outputHash} or (_: {})) { inherit self; };
+      });
+      zfsStable = super.zfsUnstable.overrideAttrs (oldAttrs: {
+        meta = oldAttrs.meta // (overrides.${oldAttrs.src.outputHash} or (_: {})) { inherit self; };
       });
+      zfs = zfsStable;
     });
   };
-  # linuxPackages_latest = final.linuxPackages_5_15;
 }
-- 
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