oxidizedgraph 0.2.0

A humble attempt at LangGraph in Rust - R-LangGraph framework for building AI agent workflows
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{
  description = "oxidizedgraph - LangGraph in Rust";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    rust-overlay.url = "github:oxalica/rust-overlay";
    flake-utils.url = "github:numtide/flake-utils";
  };

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

        rustToolchain = pkgs.rust-bin.stable.latest.default.override {
          extensions = [ "rust-src" "rust-analyzer" ];
        };
      in
      {
        devShells.default = pkgs.mkShell {
          buildInputs = with pkgs; [
            # Rust toolchain
            rustToolchain
            cargo-watch
            cargo-edit
            cargo-expand

            # SurrealDB
            surrealdb

            # Build dependencies
            pkg-config
            openssl

            # Development tools
            just
            git
          ] ++ pkgs.lib.optionals pkgs.stdenv.isDarwin [
            pkgs.darwin.apple_sdk.frameworks.Security
            pkgs.darwin.apple_sdk.frameworks.SystemConfiguration
          ];

          shellHook = ''
            echo "oxidizedgraph dev environment"
            echo "  rust: $(rustc --version)"
            echo "  surreal: $(surreal version 2>/dev/null || echo 'not in path')"
            echo ""
            echo "Commands:"
            echo "  cargo build    - build the library"
            echo "  cargo test     - run tests"
            echo "  surreal start  - start SurrealDB (memory mode: surreal start memory)"
          '';

          RUST_BACKTRACE = 1;
        };

        packages.default = pkgs.rustPlatform.buildRustPackage {
          pname = "oxidizedgraph";
          version = "0.1.1";
          src = ./.;
          cargoLock.lockFile = ./Cargo.lock;

          nativeBuildInputs = with pkgs; [ pkg-config ];
          buildInputs = with pkgs; [ openssl ]
            ++ pkgs.lib.optionals pkgs.stdenv.isDarwin [
              pkgs.darwin.apple_sdk.frameworks.Security
              pkgs.darwin.apple_sdk.frameworks.SystemConfiguration
            ];
        };
      }
    );
}