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dev/flake.nix
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Alex KwiatkowskiandGitHub a4bb59884b fix(nix): use correct version from Cargo.toml in flake build (#11770)
## Summary

- When building via `nix build`, the binary reports `codex-cli 0.0.0`
because the workspace `Cargo.toml` uses `0.0.0` as a placeholder on
`main`. This causes the update checker to always prompt users to upgrade
even when running the latest code.
- Reads the version from `codex-rs/Cargo.toml` at flake evaluation time
using `builtins.fromTOML` and patches it into the workspace `Cargo.toml`
before cargo builds via `postPatch`.
- On release commits (e.g. tag `rust-v0.101.0`), the real version is
used as-is. On `main` branch builds, falls back to
`0.0.0-dev+<shortRev>` (or `0.0.0-dev+dirty`), which the update
checker's `parse_version` ignores — suppressing the spurious upgrade
prompt.

| Scenario | Cargo.toml version | Nix `version` | Binary reports |
Upgrade nag? |
|---|---|---|---|---|
| Release commit (e.g. `rust-v0.101.0`) | `0.101.0` | `0.101.0` |
`codex-cli 0.101.0` | Only if newer exists |
| Main branch (committed) | `0.0.0` | `0.0.0-dev+b934ffc` | `codex-cli
0.0.0-dev+b934ffc` | No |
| Main branch (uncommitted) | `0.0.0` | `0.0.0-dev+dirty` | `codex-cli
0.0.0-dev+dirty` | No |

## Test plan

- [ ] `nix build` from `main` branch and verify `codex --version`
reports `0.0.0-dev+<shortRev>` instead of `0.0.0`
- [ ] Verify the update checker does not show a spurious upgrade prompt
for dev builds
- [ ] Confirm that on a release commit where `Cargo.toml` has a real
version, the binary reports that version correctly
2026-02-13 12:19:25 -08:00

51 lines
1.2 KiB
Nix

{
description = "Development Nix flake for OpenAI Codex CLI";
inputs = {
nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
flake-utils.url = "github:numtide/flake-utils";
rust-overlay = {
url = "github:oxalica/rust-overlay";
inputs.nixpkgs.follows = "nixpkgs";
};
};
outputs = { nixpkgs, flake-utils, rust-overlay, ... }:
flake-utils.lib.eachDefaultSystem (system:
let
pkgs = import nixpkgs {
inherit system;
};
pkgsWithRust = import nixpkgs {
inherit system;
overlays = [ rust-overlay.overlays.default ];
};
monorepo-deps = with pkgs; [
# for precommit hook
pnpm
husky
];
code-rs = import ./code-rs {
pkgs = pkgsWithRust;
inherit monorepo-deps;
};
in
{
packages = {
code-rs = code-rs.package;
default = code-rs.package;
};
devShells = {
code-rs = code-rs.devShell;
default = code-rs.devShell;
};
apps = {
code-rs = code-rs.app;
default = code-rs.app;
};
}
);
}