Nix build fails: stale rmcp hash and missing filedescriptor hash

What version of Codex is running?

latest

What subscription do you have?

chatgpt plus

Which model were you using?

_No response_

What platform is your computer?

_No response_

What issue are you seeing?

Building Codex via Nix currently fails during buildRustPackage. Two stale entries in codex-rs/default.nix’s
cargoLock.outputHashes don’t match the crates in Cargo.lock:

• rmcp now comes from crates.io (0.10.x), but we still list a git hash for it, so evaluation aborts with “A hash was

specified for rmcp-0.10.0, but there is no corresponding git dependency.”

• filedescriptor comes from a git dependency (pakrym/wezterm) but has no hash, so vendoring fails with “No hash was found while vendoring the git dependency filedescriptor-0.8.3.”

What steps can reproduce the bug?

1. nix flake update
2. nixos-rebuild switch

What is the expected behavior?

_No response_

Additional information

error:
       … while calling the 'head' builtin
         at /nix/store/cd6v80pj9h7r2prxx9a71y92zq88p1xx-source/lib/attrsets.nix:1696:13:
         1695|           if length values == 1 || pred here (elemAt values 1) (head values) then
         1696|             head values
             |             ^
         1697|           else

       … while evaluating the attribute 'value'
         at /nix/store/cd6v80pj9h7r2prxx9a71y92zq88p1xx-source/lib/modules.nix:1118:7:
         1117|     // {
         1118|       value = addErrorContext "while evaluating the option `${showOption loc}':" value;
             |       ^
         1119|       inherit (res.defsFinal') highestPrio;

       … while evaluating the option `system.build.toplevel':

       … while evaluating definitions from `/nix/store/cd6v80pj9h7r2prxx9a71y92zq88p1xx-source/nixos/modules/system/activation/top-level.nix':

       … while evaluating the option `system.systemBuilderArgs':

       … while evaluating definitions from `/nix/store/cd6v80pj9h7r2prxx9a71y92zq88p1xx-source/nixos/modules/system/activation/activatable-system.nix':

       … while evaluating the option `system.activationScripts.etc.text':

       … while evaluating definitions from `/nix/store/cd6v80pj9h7r2prxx9a71y92zq88p1xx-source/nixos/modules/system/etc/etc-activation.nix':

       … while evaluating definitions from `/nix/store/cd6v80pj9h7r2prxx9a71y92zq88p1xx-source/nixos/modules/system/etc/etc.nix':

       … while evaluating the option `environment.etc.dbus-1.source':

       (stack trace truncated; use '--show-trace' to show the full, detailed trace)

       error: A hash was specified for rmcp-0.9.0, but there is no corresponding git dependency.