lafs 0.0.5

Least-Authority File Store utils
Documentation 
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{
  description = "Rust development environment";
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
    rust-overlay = {
      url = "github:oxalica/rust-overlay";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };
  outputs = { self, nixpkgs, rust-overlay }:
    let
      overlays = [
        rust-overlay.overlays.default
        (final: prev: {
          rustToolchain =
            let
              rust = prev.rust-bin;
            in
            if builtins.pathExists ./rust-toolchain.toml then
              rust.fromRustupToolchainFile ./rust-toolchain.toml
            else if builtins.pathExists ./rust-toolchain then
              rust.fromRustupToolchainFile ./rust-toolchain
            else
              rust.stable.latest.default;
        })
      ];
      supportedSystems = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
      forEachSupportedSystem = f: nixpkgs.lib.genAttrs supportedSystems (system: f {
        pkgs = import nixpkgs { inherit overlays system; };
      });
    in
    {
      devShells = forEachSupportedSystem ({ pkgs }: {
        default = pkgs.mkShell {
          packages = with pkgs; [
            cargo-deny
            cargo-edit
            cargo-tarpaulin
            cargo-watch
            maturin
            python39
            python310
            python311
            python312
            python311Packages.tox
            rust-analyzer
            rustToolchain
            rustc.llvmPackages.llvm
            virtualenv
          ];
        };
      });
    };
}