nixos: pull CoreRAD package and module from unstable

nixos/configuration.nix

@@ -4,7 +4,9 @@
 
 { config, lib, pkgs, ... }:
 
-let vars = import ./vars.nix;
+let
+  vars = import ./vars.nix;
+  unstable = import <unstable> {};
 
 in {
   imports = [
@@ -21,17 +23,15 @@ in {
     ./dhcpd4.nix
     ./wgipamd.nix
 
-    # Modules which are not in nixpkgs.
-    ./modules/corerad.nix
+    # Unstable modules.
+    <unstable/nixos/modules/services/networking/corerad.nix>
+
+    # Out-of-tree modules.
     ./modules/wgipamd.nix
   ];
 
   nixpkgs.overlays = [
     (self: super: {
-      # Packages which are not in nixpkgs.
-      corerad = super.callPackage ./pkgs/corerad.nix {
-        buildGoModule = super.buildGo113Module;
-      };
       wgipamd = super.callPackage ./pkgs/wgipamd.nix {
         buildGoModule = super.buildGo113Module;
       };
@@ -80,6 +80,7 @@ in {
   # List packages installed in system profile. To search, run:
   # $ nix search wget
   environment.systemPackages = with pkgs; [
+    # Stable packages.
     bind
     byobu
     cbfstool
@@ -100,6 +101,9 @@ in {
     tmux
     wget
     wireguard-tools
+
+    # Unstable packages.
+    unstable.corerad
   ];
 
   services = {

nixos/corerad.nix

@@ -2,6 +2,7 @@
 
 let
   vars = import ./vars.nix;
+  unstable = import <unstable> {};
 
   guest0 = vars.interfaces.guest0;
   iot0 = vars.interfaces.iot0;
@@ -11,6 +12,8 @@ let
 in {
   services.corerad = {
     enable = true;
+    # Use unstable package until CoreRAD reaches stable.
+    package = unstable.corerad;
     configFile = pkgs.writeText "corerad.toml" ''
       # CoreRAD vALPHA configuration file.
 

nixos/modules/corerad.nix

@@ -1,46 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
-
-let
-  cfg = config.services.corerad;
-in {
-  meta = {
-    maintainers = with maintainers; [ mdlayher ];
-  };
-
-  options.services.corerad = {
-    enable = mkEnableOption "CoreRAD IPv6 NDP RA daemon";
-
-    configFile = mkOption {
-      type = types.path;
-      example = literalExample "\"\${pkgs.corerad}/etc/corerad/corerad.toml\"";
-      description = "Path to CoreRAD TOML configuration file.";
-    };
-
-    package = mkOption {
-      default = pkgs.corerad;
-      defaultText = literalExample "pkgs.corerad";
-      type = types.package;
-      description = "CoreRAD package to use.";
-    };
-  };
-
-  config = mkIf cfg.enable {
-    systemd.services.corerad = {
-      description = "CoreRAD IPv6 NDP RA daemon";
-      after = [ "network.target" ];
-      wantedBy = [ "multi-user.target" ];
-      serviceConfig = {
-        LimitNPROC = 512;
-        LimitNOFILE = 1048576;
-        CapabilityBoundingSet = "CAP_NET_ADMIN CAP_NET_RAW";
-        AmbientCapabilities = "CAP_NET_ADMIN CAP_NET_RAW";
-        NoNewPrivileges = true;
-        DynamicUser = true;
-        ExecStart = "${getBin cfg.package}/bin/corerad -c=${cfg.configFile}";
-        Restart = "on-failure";
-      };
-    };
-  };
-}

nixos/pkgs/corerad.nix

@@ -1,24 +0,0 @@
-{ stdenv, buildGoModule, fetchFromGitHub }:
-
-buildGoModule rec {
-  pname = "corerad";
-  version = "0.1.7";
-
-  goPackagePath = "github.com/mdlayher/corerad";
-
-  src = fetchFromGitHub {
-    owner = "mdlayher";
-    repo = "corerad";
-    rev = "v${version}";
-    sha256 = "0qn179kvzbm4jgrrfs1l5j9q328bxa3wwyhz1pcnqr05f6bzpjx3";
-  };
-
-  modSha256 = "0biiyjlpidxi1h211wrfwd47snij69ck2rf4yiiajmmnyhsh2x2y";
-
-  meta = with stdenv.lib; {
-    homepage = "https://github.com/mdlayher/corerad";
-    description = "CoreRAD extensible and observable IPv6 NDP RA daemon";
-    license = licenses.asl20;
-    maintainers = with maintainers; [ mdlayher ];
-  };
-}