flake.nix

{
  description = "A command-line tool to generate environment files using KeePass databases as a secure source for sensitive values.";

  inputs = {
    # Latest stable Nixpkgs
    nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/0";
    # A helper library for Rust + Nix
    rust-overlay.url = "https://flakehub.com/f/oxalica/rust-overlay/*";
  };

  outputs = { self, nixpkgs, rust-overlay }:
    let
      # Systems supported
      allSystems = [
        "x86_64-linux" # 64-bit Intel/AMD Linux
        "aarch64-linux" # 64-bit ARM Linux
        "x86_64-darwin" # 64-bit Intel macOS
        "aarch64-darwin" # 64-bit ARM macOS
      ];

      # Helper to provide system-specific attributes
      forAllSystems = f: nixpkgs.lib.genAttrs allSystems (system: f {
        pkgs = import nixpkgs {
          inherit system;
          overlays = [
            # Provides Nixpkgs with a rust-bin attribute for building Rust toolchains
            rust-overlay.overlays.default
            # Uses the rust-bin attribute to select a Rust toolchain
            self.overlays.default
          ];
        };
      });
    in
    {
      overlays.default = final: prev: {
        # The Rust toolchain used for the package build
        rustToolchain = final.rust-bin.stable.latest.default;
      };

      packages = forAllSystems ({ pkgs }: {
        default =
          let
            rustPlatform = pkgs.makeRustPlatform {
              cargo = pkgs.rustToolchain;
              rustc = pkgs.rustToolchain;
            };
          in
          rustPlatform.buildRustPackage {
            name = "keepass-2-file";
            src = ./.;
            doCheck = false;
            cargoLock = {
              lockFile = ./Cargo.lock;
            };
            postInstall = ''
              mkdir -p $out/share/bash-completion/completions
              $out/bin/keepass-2-file completion bash > $out/share/bash-completion/completions/keepass-2-file
            '';
          };
      });
    };
}