installer: add our own latestZfsCompatibleLinuxPackages

flake.lock

@@ -18,11 +18,11 @@
     },
     "nixos-unstable": {
       "locked": {
-        "lastModified": 1726658796,
-        "narHash": "sha256-SiiWCVg/W8i6jvpgQj3NNd3YtV+jfnn/t3Za7hfn1iE=",
+        "lastModified": 1726798147,
+        "narHash": "sha256-k/Ojv+MUDKUbj8JPd1MulJrf5BVz3jIUfrreMHbeTBE=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "75ac2a58e988a346960938ab16cea903a3cb053a",
+        "rev": "e88358265511d3a73b30dc6e4c15579844b35280",
         "type": "github"
       },
       "original": {

nix/installer.nix

@@ -4,6 +4,14 @@
   pkgs,
   ...
 }:
+let
+  latestZfsCompatibleLinuxPackages = lib.pipe pkgs.linuxKernel.packages [
+    builtins.attrValues
+    (builtins.filter (kPkgs: (builtins.tryEval kPkgs).success && kPkgs ? kernel && kPkgs.kernel.pname == "linux" && !kPkgs.zfs.meta.broken))
+    (builtins.sort (a: b: (lib.versionOlder a.kernel.version b.kernel.version)))
+    lib.last
+  ];
+in
 {
   # more descriptive hostname than just "nixos"
   networking.hostName = lib.mkDefault "nixos-installer";
@@ -16,7 +24,7 @@
 
   # use latest kernel we can support to get more hardware support
   boot.zfs.package = pkgs.zfsUnstable;
-  boot.kernelPackages = pkgs.zfsUnstable.latestCompatibleLinuxPackages;
+  boot.kernelPackages = latestZfsCompatibleLinuxPackages;
 
   documentation.enable = false;
   documentation.man.man-db.enable = false;