Revert "modules/cluster: install wander from nixos-unstable"

This reverts commit 45a66a2548.

flake.nix

@@ -140,9 +140,7 @@
           then hostConf.ip4
           else throw "Host ${name} has no ip4 or ip6 address";
     in {
-      overlay = import ./overlay {
-        inherit nixos-unstable;
-      };
+      overlay = import ./overlay;
 
       legacyPackages = lib.attrsets.mapAttrs
         (system: pkgs: pkgs.appendOverlays

modules/cluster/default.nix

@@ -82,6 +82,6 @@ in {
 
   environment.systemPackages = with pkgs; [
     # nomad frontends
-    damon wander
+    damon
   ];
 }

overlay/default.nix

@@ -1,11 +1,5 @@
-{ nixos-unstable }:
-
 final: prev:
 
-let
-  pkgs-unstable = nixos-unstable.legacyPackages.${prev.system};
-
-in
 {
   bmxd = prev.callPackage ./bmxd.nix { };
 
@@ -56,10 +50,4 @@ in
   readsb = prev.callPackage ./readsb.nix { };
 
   SimpleYggGen-CPP = prev.callPackage ./simpleygggen.nix { };
-
-  wander =
-    if prev ? wander
-    then builtins.trace "`wander` is now available on stable NixOS. Please remove from overlay!"
-      prev.wander
-    else pkgs-unstable.wander;
 }