subenum 1.2.0

A proc-macro to create subsets of enums, that can be converted to and from.
Documentation 
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{
  inputs = {
    flake-utils.url = "github:numtide/flake-utils";
    nixpkgs.url = "nixpkgs/nixos-unstable";
    rust-overlay = {
      url = "github:oxalica/rust-overlay";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs =
    {
      flake-utils,
      nixpkgs,
      rust-overlay,
      ...
    }:
    flake-utils.lib.eachDefaultSystem (
      system:
      let
        overlays = [ (import rust-overlay) ];
        pkgs = import nixpkgs { inherit system overlays; };

        rust = pkgs.rust-bin.stable.latest.default.override {
          extensions = [
            "rust-analyzer"
            "rust-src"
          ];
        };
      in
      {
        devShells.default = pkgs.mkShell {
          packages = [
            pkgs.cargo-edit
            pkgs.just
            rust
          ];
        };
      }
    );
}