* change(nix): dedupe nix lockfile checking scripts in ci
* feat(nix): make .#fix-lockfiles run --apply if no args passed
* fix(nix): use same nodejs version everywhere & small lints
- prevent lockfile thrashing while using nix :3
- use lib.getExe instead of raw /bin/ paths
- use inputs'.self instead of passing system in manually
* fix(nix): update lock files yet again (hopefully for the last time)
* fix(nix): align indentation of collision check echo
---------
Co-authored-by: Hermes Agent <hermes@nousresearch.com>
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`.
`web/package-lock.json` was updated by the design-system refactor
(merged via #17007 + follow-ups: spinner / select / badges / buttons)
without bumping `nix/web.nix::npmDeps.hash`, breaking nix builds on
every PR + main since 2026-04-28T18:46.
Hash sourced from the actual `Check flake` failure output:
specified: sha256-AahWmJ9gDQ9pMPa1FYwUjYdO2mOi6JM9Mst27E0vp68=
got: sha256-+B2+Fe4djPzHHcUXRx+m0cuyaopAhW0PcHsMgYfV5VE=
Standalone single-file fix so it can land fast and clear nix on
every other open PR.
* fix(nix): use --rebuild in fix-lockfiles to bypass cached FOD store paths
fix-lockfiles checked npm lockfile hashes by running
`nix build .#<attr>.npmDeps`, but fetchNpmDeps is a fixed-output
derivation — if the old store path exists locally, Nix returns it from
cache without re-fetching. This caused the script to report "ok" even
when hashes were stale, while CI (with no cache) failed with a hash
mismatch.
Adding --rebuild forces Nix to re-derive and verify the output hash
against the declared one, catching staleness regardless of local cache
state. Also updates the tui and web npm deps hashes that were stale.
* fix(nix): regenerate ui-tui lockfile to add missing @emnapi entries
npm ci was failing because @emnapi/core and @emnapi/runtime were
missing from ui-tui/package-lock.json despite being required as peer
deps by @napi-rs/wasm-runtime (via @rolldown/binding-wasm32-wasi).
Running npm install --package-lock-only adds the missing entries.
The npmDepsHash reverts to its previous value since fetchNpmDeps was
already fetching these packages as transitive dependencies.
The web dashboard (Vite/React frontend) is now built as a separate Nix
derivation and baked into the Hermes package. The build output is
installed to a standard location and exposed via the `HERMES_WEB_DIST`
environment variable, allowing the dashboard command to use pre-built
assets when available (e.g., in packaged releases) instead of rebuilding
on every invocation.
