add routeros to overlay

default.nix

@@ -97,11 +97,9 @@ in {
   # cross-compiling nix-shell for any package we're customizing
   inherit pkgs;
 
-  buildEnv =
-    let routeros = pkgs.pkgsBuildBuild.callPackage ./tests/support/ppp-server {};
-    in pkgs.mkShell {
-      packages = [
-        pkgs.pkgsBuildBuild.tufted
+  buildEnv = pkgs.mkShell {
+    packages = with pkgs.pkgsBuildBuild; [
+      tufted
       routeros.routeros
       routeros.ros-exec-script
     ];

overlay.nix

@@ -25,9 +25,6 @@ final: prev: {
     nettle = null;
   };
 
-
-  tufted = final.callPackage ./pkgs/tufted {};
-
   pppoe = final.callPackage ./pkgs/pppoe {};
   ppp =
     (prev.ppp.override {
@@ -83,4 +80,10 @@ final: prev: {
       sha256 = "0b03bdvm388kwlcz97aflpr3ir1zpa3m0bq3s6cd3pp5a667lcwz";
     };
   };
+
+  # these are packages for the build system not the host/target
+
+  tufted = final.callPackage ./pkgs/tufted {};
+  routeros = final.callPackage ./pkgs/routeros {};
+
 }

tests/pppoe/test.nix

@@ -6,8 +6,8 @@ let img = (import liminix {
       device = import "${liminix}/devices/qemu/";
       liminix-config = ./configuration.nix;
     }).outputs.default;
-    pkgs = import <nixpkgs> {};
-    ros = pkgs.callPackage ../support/ppp-server {};
+    pkgs = import <nixpkgs> { overlays = [(import ../../overlay.nix)]; };
+    ros = pkgs.pkgsBuildBuild.routeros;
     run-qemu = pkgs.writeShellScriptBin "run-qemu" ''
       export PATH="${pkgs.lib.makeBinPath [pkgs.qemu]}:$PATH"
       ${builtins.readFile ../../scripts/run-qemu.sh}