{
  description = "Prism - ATProto AppView service for gmstn";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
    rust-overlay = {
      url = "github:oxalica/rust-overlay";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    crane.url = "github:ipetkov/crane";
  };

  outputs =
    {
      self,
      nixpkgs,
      rust-overlay,
      crane,
    }:
    let
      supportedSystems = [
        "x86_64-linux"
        "aarch64-linux"
        "x86_64-darwin"
        "aarch64-darwin"
      ];
      forAllSystems = nixpkgs.lib.genAttrs supportedSystems;

      mkPkgs =
        system:
        import nixpkgs {
          inherit system;
          overlays = [ rust-overlay.overlays.default ];
        };
    in
    {
      packages = forAllSystems (
        system:
        let
          pkgs = mkPkgs system;
          rustToolchain = pkgs.rust-bin.stable.latest.default;
          craneLib = (crane.mkLib pkgs).overrideToolchain rustToolchain;

          commonArgs = {
            src = craneLib.cleanCargoSource ./.;
            strictDeps = true;

            buildInputs =
              with pkgs;
              [
                openssl
                postgresql
              ]
              ++ pkgs.lib.optionals pkgs.stdenv.isDarwin [
                pkgs.apple-sdk
              ];

            nativeBuildInputs = with pkgs; [
              pkg-config
            ];

            SQLX_OFFLINE = "true";
          };

          cargoArtifacts = craneLib.buildDepsOnly commonArgs;

          prism = craneLib.buildPackage (
            commonArgs
            // {
              inherit cargoArtifacts;
            }
          );
        in
        {
          inherit prism;
          default = prism;
        }
      );

      devShells = forAllSystems (
        system:
        let
          pkgs = mkPkgs system;
          rustToolchain = pkgs.rust-bin.stable.latest.default.override {
            extensions = [
              "rust-src"
              "rust-analyzer"
            ];
          };
        in
        {
          default = pkgs.mkShell {
            buildInputs =
              with pkgs;
              [
                rustToolchain

                pkg-config
                openssl

                postgresql
                sqlx-cli

                docker-client
              ]
              ++ pkgs.lib.optionals pkgs.stdenv.isDarwin [
                pkgs.apple-sdk
              ];

            DATABASE_URL = "postgres://postgres:postgres@localhost:5432/prism";

            shellHook = ''
              echo "🔮 Prism development environment"
              echo ""
              echo "Available commands:"
              echo "  cargo run        - Start the server"
              echo "  cargo test       - Run tests (needs Docker)"
              echo "  cargo sqlx       - Database migrations"
              echo ""
              echo "Database: $DATABASE_URL"
            '';
          };
        }
      );

      overlays.default = final: prev: {
        prism = self.packages.${final.stdenv.hostPlatform.system}.prism;
      };
    };
}