hermes-agent/nix/overlays.nix
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fix(banner): show correct update status on nix-built hermes (#17550)
check_for_updates() looked at __file__.parent.parent for a .git dir to
  diff against origin/main. A nix-built hermes lives in /nix/store with
  no .git there, so the check fell through to whatever editable-install
  dev checkout last populated ~/.hermes/.update_check, producing stale
  "X commits behind" warnings right after a fresh `nix run --refresh`.

  Embed the locked flake rev into the wrapper as HERMES_REVISION (only
on
  clean builds — dirty refs don't represent any upstream commit). When
  set, banner.py compares it to upstream main via `git ls-remote`
instead
  of inspecting a local checkout, and the cache key includes the rev so
  nix updates invalidate immediately. Without local history we can't
  count commits, so the message is a plain "update available" with no
  suggested command — nix users may install via `nix run`, profile,
  system flake, or home-manager, and we don't know which.

  Also bump web/package-lock.json npmDepsHash via `nix run
.#fix-lockfiles`.
2026-04-30 07:03:00 +05:30

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Nix

# nix/overlays.nix — Expose pkgs.hermes-agent for external NixOS configs
{ inputs, ... }:
{
flake.overlays.default = final: _: {
hermes-agent = final.callPackage ./hermes-agent.nix {
inherit (inputs) uv2nix pyproject-nix pyproject-build-systems;
npm-lockfile-fix = inputs.npm-lockfile-fix.packages.${final.stdenv.hostPlatform.system}.default;
rev = inputs.self.rev or null;
};
};
}