2 files changed, 20 insertions, 5 deletions

diff --git a/custom/bar-service.nix b/custom/bar-service.nix
index 9a48d960..a5bb9626 100644
--- a/custom/bar-service.nix
+++ b/custom/bar-service.nix
@@ -52,15 +52,17 @@ in {
     };
   };
 
-  config = mkIf cfg.enable {
-    imports = [ ./thermoprint-service.nix ];
+  imports = mkIf cfg.enable [ ./thermoprint-service.nix ];
 
+  config = mkIf cfg.enable {
     assertions = [
       { assertion = config.services.postgresql.enable;
         message = "bar requires PostgreSQL";
       }
     ];
 
+    packages.thermoprint.enable = true;
+
     users.users."${cfg.user}" = {
       group = cfg.group;
       description = "User for the Bar Inventory System";
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;
         }
       );