1 files changed, 16 insertions, 3 deletions

diff --git a/custom/thermoprint-service.nix b/custom/thermoprint-service.nix
index 8773706c..30588d43 100644
--- a/custom/thermoprint-service.nix
+++ b/custom/thermoprint-service.nix
@@ -2,13 +2,26 @@
 
 with lib;
 
-{
-  config = {
+let
+  pCfg = config.packages.thermoprint;
+in {
+  options = {
+    packages.thermoprint = {
+      enable = mkEnableOption "thermoprint packages";
+
+      extraServerPackages = mkOption {
+        type = types.unspecified;
+        default = p: [];
+      };
+    };
+  };
+
+  config = mkIf pCfg.enable {
     nixpkgs.overlays = [(selfPkgs: superPkgs: {
       haskellPackages = superPkgs.haskellPackages.extend (selfH: superH:
         import ./custom/thermoprint {
           callPackage = superPkgs.lib.callPackageWith (selfH // { inherit (superPkgs) stdenv makeWrapper runCommand; });
-          extraPackages = (p: []);
+          extraPackages = pCfg.extraServerPackages;
         }
       );