tomatocream
c7303154cc
Compared this template against the older nix-templates/templates/rust
("rrrr") ahead of eventually replacing it. Ported the pieces that were
genuinely missing and non-controversial:
- flake.templates.default, so `nix flake init -t <url>` works once
this repo is published — the actual mechanism a "template" needs.
- justfile wrapping the cargo/nix commands for discoverability.
- .envrc (use flake) for direnv auto-activation.
- `just` added to the dev shell so the justfile is usable without a
separate install.
Left out on purpose: workspace crate split, tracing/serde/tokio-heavy
example code, docker.nix, nightly coverage toolchain, and copier.yaml —
those make it an opinionated async-service starter rather than a blank
Rust template, and copier.yaml in the old repo was dead configuration
(no file actually referenced its Jinja variables).
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018ALEXkc7pTro7tF1WcUuKb
rust_template
A minimal Rust project template: a clap CLI backed by a library crate, with unit tests, an
integration test, a criterion benchmark, and a Nix flake (crane + fenix) — so it builds the same
way with plain cargo or with nix.
Using this template
- Copy/clone this repo (or, once published,
nix flake init -t <this-repo-url>). - Rename the placeholder crate name:
./scripts/rename-project.sh my_project cd .. && mv rust_template my_project && cd my_project - Build whatever you actually came here for — replace
greetinsrc/lib.rs, extend the CLI insrc/main.rs, add your own tests and benchmarks.
Building and running
With Cargo (needs Rust installed, or run inside nix develop):
cargo run -- Zeke # build + run, prints "Hello, Zeke!"
cargo build --release
cargo test # unit + integration tests
cargo bench # criterion benchmark
With Nix (no local Rust install needed):
nix develop # dev shell with the pinned toolchain + tools
nix build # produces ./result/bin/rust_template
nix run -- Zeke # build + run
nix flake check # clippy, fmt, doc, audit, tests — all in one go
nix fmt # format Rust, Nix, and TOML files
If you have direnv installed, direnv allow activates the dev shell
automatically on cd (see .envrc).
just (available inside nix develop) wraps the common commands above — run just to list them.
See CLAUDE.md for more detail on the project layout and how the pieces fit together.