From 71a601cfc5a2faa3124f1001af18494619fc63ee Mon Sep 17 00:00:00 2001
From: atagen <boss@atagen.co>
Date: Sun, 21 Jun 2026 14:03:31 +1000
Subject: [PATCH 1/2] tack: init at 1.0.0

(cherry picked from commit de643f257ba6e37fd9b58e742c4f7155a0a8a446)
---
 pkgs/by-name/ta/tack/package.nix | 43 ++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 pkgs/by-name/ta/tack/package.nix

diff --git a/pkgs/by-name/ta/tack/package.nix b/pkgs/by-name/ta/tack/package.nix
new file mode 100644
index 000000000000..6b4d448cb70b
--- /dev/null
+++ b/pkgs/by-name/ta/tack/package.nix
@@ -0,0 +1,43 @@
+{
+  lib,
+  rustPlatform,
+  fetchFromGitHub,
+  nix-update-script,
+}:
+rustPlatform.buildRustPackage (finalAttrs: {
+  pname = "tack";
+  version = "1.0.0";
+  src = fetchFromGitHub {
+    owner = "manic-systems";
+    repo = "tack";
+    tag = "v${finalAttrs.version}";
+    hash = "sha256-KhJb0NWLhj8AkD8uWEbXt179YlFLemk0OgOltw4jEk8=";
+  };
+
+  __structuredAttrs = true;
+  strictDeps = true;
+
+  cargoHash = "sha256-3vDMM5uTsmRso6McH/b3+RpjeKjhgQm9V1piBrnSRjk=";
+
+  prePatch = ''
+    rm .cargo/config.toml
+  '';
+
+  doInstallCheck = true;
+
+  passthru.updateScript = nix-update-script { };
+
+  meta = {
+    homepage = "https://github.com/manic-systems/tack";
+    description = "flake-like toml nix pins, lazily fetched and transformed";
+    mainProgram = "tack";
+    license = [ lib.licenses.eupl12 ];
+    maintainers = with lib.maintainers; [
+      amaanq
+      atagen
+      faukah
+      max
+      NotAShelf
+    ];
+  };
+})

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 2/2] 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";
+    };
+  };
+}