feat: add sidecar and td packages, fix neovim extraLuaConfig

pkgs/td/default.nix

@@ -0,0 +1,47 @@
+{
+  lib,
+  buildGoModule,
+  fetchFromGitHub,
+  gitMinimal,
+  nix-update-script,
+  versionCheckHook,
+  writableTmpDirAsHomeHook,
+}:
+buildGoModule (finalAttrs: {
+  pname = "td";
+  version = "0.33.0";
+
+  src = fetchFromGitHub {
+    owner = "marcus";
+    repo = "td";
+    tag = "v${finalAttrs.version}";
+    hash = "sha256-gci4B83x/0UMawy+fncArF9zO1aHRE/zXj91e5h6yi8=";
+  };
+
+  vendorHash = "sha256-Rp0lhnBLJx+exX7VLql3RfthTVk3LLftD6n6SsSWzVY=";
+
+  ldflags = [
+    "-s"
+    "-w"
+    "-X"
+    "main.Version=v${finalAttrs.version}"
+  ];
+
+  nativeCheckInputs = [gitMinimal writableTmpDirAsHomeHook];
+
+  nativeInstallCheckInputs = [versionCheckHook writableTmpDirAsHomeHook];
+  versionCheckProgramArg = "version";
+  doInstallCheck = true;
+
+  doCheck = false;
+
+  passthru.updateScript = nix-update-script {};
+
+  meta = with lib; {
+    description = "Minimalist CLI for tracking tasks across AI coding sessions";
+    homepage = "https://github.com/marcus/td";
+    license = licenses.mit;
+    mainProgram = "td";
+    platforms = platforms.unix;
+  };
+})