network/nix/pkgs/device-templates.nix

{ self, nixpkgs, system }:
with nixpkgs.lib;
let
  pkgs = nixpkgs.legacyPackages.${system};
  config = self.lib.config;
  
  device-scripts =
    builtins.mapAttrs (hostName: hostConfig@{ role, model, ... }:
      pkgs.writeScriptBin "${hostName}.sh" (
        let
          args = {
            inherit self hostName config hostConfig pkgs;
          };
        in {
          ap = import ./ap.nix args;
          switch = import (./switches + "/${model}.nix")
            (args //
             import ./switches/shared.nix args
            );
        }.${role}
      )
    ) (
      filterAttrs (_: { role, ... }:
        role == "ap" || role == "switch"
      ) config.site.hosts
    );

  all-device-scripts =
    pkgs.runCommandLocal "all-device-scripts" {} (
      ''
        mkdir -p $out/bin

        substitute ${./ap_install_collectd.sh} $out/bin/ap_install_collectd.sh \
          --replace "{{STATS}}" "${config.site.net.serv.hosts6.dn42.stats}"
        chmod a+x $out/bin/ap_install_collectd.sh
      '' +
      builtins.concatStringsSep "\n" (
        map (hostName:
          "ln -s ${device-scripts.${hostName}}/bin/${hostName}.sh $out/bin/${hostName}.sh"
        ) (builtins.attrNames device-scripts)
      )
    );
in
{
  inherit all-device-scripts;
} // device-scripts