nix: install gmcli on NixOS and nix-darwin

Author: colonelpanic8

nix-darwin/flake.lock

@@ -36,6 +36,11 @@
       inputs.nixpkgs.follows = "nixpkgs";
     };
 
+    gmcli = {
+      url = "github:colonelpanic8/gmcli?ref=agent/json-archive-export";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
     codex-cli-nix = {
       # Default branch is `main` on GitHub (not `master`).
       url = "github:sadjow/codex-cli-nix/main";

nix-darwin/flake.nix

@@ -30,6 +30,7 @@
       };
   });
   coquiTtsStreamer = inputPackageOrNull "coqui-tts-streamer" "default";
+  gmcli = inputPackageOrNull "gmcli" "default";
   keepbook = inputs.keepbook.packages.${system}.keepbook.overrideAttrs (_: {
     # Upstream checks currently depend on TS artifacts that are not built in Nix.
     doCheck = false;
@@ -85,6 +86,7 @@
     ])
     ++ lib.optionals (!isJayLenovo) [pkgs.bazel]
     ++ lib.optionals (coquiTtsStreamer != null) [coquiTtsStreamer]
+    ++ lib.optionals (gmcli != null) [gmcli]
     ++ lib.optionals (builtins.hasAttr "git-sync-rs" pkgs) [pkgs.git-sync-rs]);
 
   linuxOnly = with pkgs; [

nix-shared/system/essential.nix

@@ -50,6 +50,11 @@
       };
     };
 
+    gmcli = {
+      url = "github:colonelpanic8/gmcli?ref=agent/json-archive-export";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
     keepbook = {
       url = "github:colonelpanic8/keepbook";
       inputs = {