From f7b759a80e65adc0eb12935d7700bab66a4e4ff5 Mon Sep 17 00:00:00 2001
From: atagen <boss@atagen.co>
Date: Sun, 21 Jun 2026 14:13:51 +1000
Subject: [PATCH] nixos/tack: init

(cherry picked from commit 74b9979f50c299d1ebe22fbc40bef117c301502a)
---
 nixos/modules/module-list.nix   |  1 +
 nixos/modules/programs/tack.nix | 26 ++++++++++++++++++++++++++
 2 files changed, 27 insertions(+)
 create mode 100644 nixos/modules/programs/tack.nix

diff --git a/nixos/modules/module-list.nix b/nixos/modules/module-list.nix
index 6134fee6a1ab..05183e91e7b5 100644
--- a/nixos/modules/module-list.nix
+++ b/nixos/modules/module-list.nix
@@ -327,6 +327,7 @@
   ./programs/sysdig.nix
   ./programs/system-config-printer.nix
   ./programs/systemtap.nix
+  ./programs/tack.nix
   ./programs/tcpdump.nix
   ./programs/television.nix
   ./programs/throne.nix
diff --git a/nixos/modules/programs/tack.nix b/nixos/modules/programs/tack.nix
new file mode 100644
index 000000000000..6b39c72bda4e
--- /dev/null
+++ b/nixos/modules/programs/tack.nix
@@ -0,0 +1,26 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+let
+  cfg = config.programs.tack;
+in
+{
+  options.programs.tack = {
+    enable = lib.mkEnableOption "tack, flake-like toml nix pins";
+
+    package = lib.mkPackageOption pkgs "tack" { };
+
+    nixConfTokens = lib.mkEnableOption "tack reading access tokens from nix.conf (significantly improves comparison speed)";
+  };
+
+  config = lib.mkIf cfg.enable {
+    environment.systemPackages = [ cfg.package ];
+
+    environment.sessionVariables = lib.mkIf cfg.nixConfTokens {
+      TACK_NIX_CONF_TOKENS = "1";
+    };
+  };
+}