{
inputs = {
nixpkgs.url = "github:nixos/nixpkgs/nixos-23.11";
# The rustup equivalent for Nix.
fenix = {
url = "github:nix-community/fenix";
inputs.nixpkgs.follows = "nixpkgs";
};
# Allows non-flakes users to still be able to `nix-shell` based on
# `shell.nix` instead of this `flake.nix`.
flake-compat = {
url = "github:edolstra/flake-compat";
flake = false;
};
};
outputs = { self, nixpkgs, fenix, ... }:
let
inherit (nixpkgs) lib;
eachSupportedSystem = lib.genAttrs supportedSystems;
supportedSystems = [
"x86_64-linux"
"aarch64-linux"
"x86_64-darwin"
"aarch64-darwin"
];
mkDevShells = system:
let
pkgs = import nixpkgs { inherit system; };
# get the rust toolchain from the rustup
# `rust-toolchain.toml` configuration file
rust-toolchain = fenix.packages.${system}.fromToolchainFile {
file = ./rust-toolchain.toml;
sha256 = "opUgs6ckUQCyDxcB9Wy51pqhd0MPGHUVbwRKKPGiwZU=";
};
in
{
default = pkgs.mkShell {
buildInputs = [ rust-toolchain ];
};
};
in
{
devShells = eachSupportedSystem mkDevShells;
};
}