Continue working towards a fully Nix based build by building the
dashboard with Nix. Continuing the theme of using the existing lock
files, use dream2nix to parse the lock file and build the tree of
dependency derivations.
dream2nix doesn't like the bundleDependencies, so we apply a small patch
to the lock file that drops all dependencies that are bundled. This
should ideally be contributed upstream but that can be done later.
Use this new dashboard build in the build-app CI workflow, meaning
future macOS apps will include this reproducible dashboard.
Test plan:
- Built a DMG, shipped to a cluster, loaded in a browser with no cache
and the dashboard looks good.
- Directory layout is as expected:
```
$ nix build .#dashboard
$ find result/
...
result/_app/immutable/entry
result/_app/immutable/entry/app.CTPAnMjf.js
result/_app/immutable/entry/start.fUSEa-2O.js
result/_app/immutable/nodes
result/_app/immutable/nodes/3.DqQr1Obm.js
result/_app/immutable/nodes/0.DgEY44RO.js
result/_app/immutable/nodes/2.BjZg_lJh.js
result/_app/immutable/nodes/1.D6vGUYYT.js
result/_app/env.js
result/_app/version.json
result/exo-logo.png
result/favicon.ico
result/index.html
```
The Rust workspace lacked Nix build support, making it difficult to
build packages reproducibly or run checks in CI.
Added a flake-parts module at rust/parts.nix that uses crane for Rust
builds and fenix for the nightly toolchain. The source filter isolates
rust/ and root Cargo files to prevent Python/docs changes from
triggering Rust rebuilds. Exports packages (system_custodian,
exo_pyo3_bindings wheel, exo-rust-workspace) and checks (cargo-nextest,
cargo-doc) for all three target platforms.
The devShell now uses inputsFrom to inherit build dependencies from the
workspace package, removing the need for manual pkg-config/openssl setup.
Test plan:
- Ran `nix flake check` successfully
- Built `nix build ".#checks.x86_64-linux.cargo-nextest"` and tests pass
- Built `nix build ".#exo_pyo3_bindings"` and wheel is produced
Update nix flake inputs. Add a second input as Swift is currently broken
in nixpkgs on Linux for `swift-format` as we want `nix fmt` to continue
being reproducible everywhere.
Preparing to add a flake-parts module for Rust builds. The flake-utils
library doesn't support the module system needed for cleanly separating
the Rust build configuration.
Converted from flake-utils to flake-parts, switching to the treefmt-nix
flakeModule import pattern. The devShell and formatter outputs remain
functionally equivalent.
Test plan:
- Ran `nix flake check` successfully
- Verified `nix develop` provides the same environment
