Found via an end-to-end test of nix flake init -> rename -> nix flake
check: renaming can reorder `use` statements alphabetically (e.g.
"acme_widget" now sorts before "criterion"), and treefmt's rustfmt
(nixpkgs) disagreed with cargo fmt's rustfmt (fenix toolchain) on
edition-2024 import grouping, so the formatting check failed right
after a clean rename.
- nix/treefmt.nix: pin programs.rustfmt.edition = "2024" to match
Cargo.toml, so treefmt and cargo fmt agree.
- scripts/rename-project.sh: auto-format (cargo fmt, falling back to
nix fmt) after renaming, and note that nix commands need git-tracked
files.
- README.md/CLAUDE.md: document that `nix flake init -t` doesn't
git-init for you, and every nix command needs `git add` first.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018ALEXkc7pTro7tF1WcUuKb
tomatocream
f07e0c08c8