{
inputs = {
nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
rust-overlay.url = "github:oxalica/rust-overlay";
flake-utils.url = "github:numtide/flake-utils";
pre-commit-hooks.url = "github:cachix/git-hooks.nix";
v-utils.url = "github:valeratrades/.github?ref=v1.4";
};
outputs = { self, nixpkgs, rust-overlay, flake-utils, pre-commit-hooks, v-utils }:
flake-utils.lib.eachDefaultSystem (
system:
let
overlays = [ (import rust-overlay) ];
pkgs = import nixpkgs {
inherit system overlays;
allowUnfree = true;
};
#NB: can't load rust-bin from nightly.latest, as there are week guarantees of which components will be available on each day.
rust = pkgs.rust-bin.selectLatestNightlyWith (toolchain: toolchain.default.override {
extensions = [ "rust-src" "rust-analyzer" "rust-docs" "rustc-codegen-cranelift-preview" ];
});
pre-commit-check = pre-commit-hooks.lib.${system}.run (v-utils.files.preCommit { inherit pkgs; });
manifest = (pkgs.lib.importTOML ./Cargo.toml).package;
pname = manifest.name;
stdenv = pkgs.stdenvAdapters.useMoldLinker pkgs.stdenv;
github = v-utils.github {
inherit pkgs pname;
lastSupportedVersion = "nightly-2026-01-03";
langs = [ "rs" ];
jobs.default = true;
release.default = true;
};
rs = v-utils.rs {
inherit pkgs rust;
style = {
modules = {
pub_first = false; #dbg: on the difficulties of auto-fixing using ourselves
};
};
};
readme = v-utils.readme-fw {
inherit pkgs pname;
defaults = true;
lastSupportedVersion = "nightly-1.93";
rootDir = ./.;
badges = [ "msrv" "crates_io" "docs_rs" "loc" "ci" ];
};
in
{
packages =
let
rustc = rust;
cargo = rust;
rustPlatform = pkgs.makeRustPlatform {
inherit rustc cargo stdenv;
};
in
{
default = rustPlatform.buildRustPackage {
inherit pname;
version = manifest.version;
buildInputs = with pkgs; [
openssl.dev
];
nativeBuildInputs = with pkgs; [ pkg-config ];
cargoLock.lockFile = ./Cargo.lock;
src = pkgs.lib.cleanSource ./.;
};
};
devShells.default =
with pkgs;
mkShell {
inherit stdenv;
shellHook =
pre-commit-check.shellHook
+ github.shellHook
+ rs.shellHook
+ readme.shellHook
+ ''
cp -f ${(v-utils.files.treefmt) { inherit pkgs; }} ./.treefmt.toml
'';
packages = [
mold
openssl
pkg-config
rust
] ++ pre-commit-check.enabledPackages ++ github.enabledPackages ++ rs.enabledPackages;
env.RUST_BACKTRACE = 1;
env.RUST_LIB_BACKTRACE = 0;
};
}
);
}