schalter: try nixpkgs fork for armv6

flake.lock

@@ -434,6 +434,22 @@
         "type": "github"
       }
     },
+    "nixos-armv6": {
+      "locked": {
+        "lastModified": 1664451341,
+        "narHash": "sha256-8fRBloK+TyCSUA3NfuUx1rx1PtCzSd6/Vde9z0iga4c=",
+        "owner": "rnhmjoj",
+        "repo": "nixpkgs",
+        "rev": "17657836b5c728ba4953cc09b269400389b92844",
+        "type": "github"
+      },
+      "original": {
+        "owner": "rnhmjoj",
+        "ref": "pr-fix-armv6",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "nixos-hardware": {
       "locked": {
         "lastModified": 1663229557,
@@ -646,6 +662,7 @@
         "microvm": "microvm",
         "naersk": "naersk_2",
         "nixos": "nixos",
+        "nixos-armv6": "nixos-armv6",
         "nixos-hardware": "nixos-hardware",
         "nixos-unstable": "nixos-unstable",
         "nixpkgs-mobilizon": "nixpkgs-mobilizon",

flake.nix

@@ -6,6 +6,7 @@
     nixpkgs-mobilizon.url = "github:minijackson/nixpkgs/init-mobilizon";
     nixos-unstable.url = "github:nixos/nixpkgs/nixos-unstable";
     nixos-hardware.url = "github:nixos/nixos-hardware";
+    nixos-armv6.url = "github:rnhmjoj/nixpkgs/pr-fix-armv6";
 
     affection-src = {
       url = "git+https://gitea.nek0.eu/nek0/affection";
@@ -658,6 +659,7 @@
         };
 
         schalter = nixosSystem' {
+          nixpkgs = inputs.nixos-armv6;
           modules = [
             "${nixos}/nixos/modules/installer/sd-card/sd-image-raspberrypi.nix"
             ({ lib, ... }: {