From 58be28d7ce5b559c1547d437743ec7890b43eff5 Mon Sep 17 00:00:00 2001
From: sternenseemann <0rpkxez4ksa01gb3typccl0i@systemli.org>
Date: Wed, 10 Mar 2021 21:53:06 +0100
Subject: [PATCH] nixos/spacecookie: add package option

This allows to change the derivation to use for the spacecookie server
binary. We probably should also use justStaticExecutables by default to
reduce the runtime closure of the service.
---
 nixos/modules/services/networking/spacecookie.nix | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/nixos/modules/services/networking/spacecookie.nix b/nixos/modules/services/networking/spacecookie.nix
index 29c1c0f0012..4ddb137876d 100644
--- a/nixos/modules/services/networking/spacecookie.nix
+++ b/nixos/modules/services/networking/spacecookie.nix
@@ -15,6 +15,18 @@ in {
 
       enable = mkEnableOption "spacecookie";
 
+      package = mkOption {
+        type = types.package;
+        default = pkgs.haskellPackages.spacecookie;
+        example = literalExample ''
+          pkgs.haskell.lib.justStaticExecutables pkgs.haskellPackages.spacecookie
+        '';
+        description = ''
+          The spacecookie derivation to use. This can be used to
+          override the used package or to use another version.
+        '';
+      };
+
       hostname = mkOption {
         type = types.str;
         default = "localhost";
@@ -62,7 +74,7 @@ in {
 
       serviceConfig = {
         Type = "notify";
-        ExecStart = "${pkgs.haskellPackages.spacecookie}/bin/spacecookie ${configFile}";
+        ExecStart = "${lib.getBin cfg.package}/bin/spacecookie ${configFile}";
         FileDescriptorStoreMax = 1;
 
         DynamicUser = true;