flake.nix


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{
  inputs = {
    flake-utils.url = "github:numtide/flake-utils";
    nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
    ocaml.url = "github:nix-ocaml/nix-overlays";
    ocaml.inputs.nixpkgs.follows = "nixpkgs";
  };

  outputs = {
    self,
    nixpkgs,
    ocaml,
    flake-utils,
  }:
    flake-utils.lib.eachDefaultSystem (system: let
      pkgs = import nixpkgs {
        inherit system;
        overlays = [
          ocaml.overlays.default
          (final: prev: {
            # This ensures we consistently use one version of ocaml packages
            ocamlPackages = prev.ocaml-ng.ocamlPackages_5_3;
          })
        ];
      };

      quickjs = pkgs.ocamlPackages.buildDunePackage {
        name = "quickjs";
        pname = "quickjs";
        version = "0.1.2";
        src = pkgs.fetchFromGitHub {
          fetchSubmodules = true;
          owner = "ml-in-barcelona";
          repo = "quickjs.ml";
          rev = "5c4aa494acdf0f7b83a7b135b4ecd5d086cc1c64";
          sha256 = "2rHyfc4Ru5fjuQY5xueJRSXBcVofVvPDagN0sFL7/nY=";
        };
        buildInputs = [pkgs.git];
        propagatedBuildInputs = [
          pkgs.git
          pkgs.ocamlPackages.alcotest
          pkgs.ocamlPackages.integers
          pkgs.ocamlPackages.ctypes
        ];
      };
      server-reason-react = pkgs.ocamlPackages.buildDunePackage {
        pname = "server-reason-react";
        version = "0.4.0";
        src = pkgs.fetchFromGitHub {
          owner = "polwex";
          repo = "server-reason-react";
          rev = "d5dd436b0a447ff0a82f9a8d7a02f102139299a9";
          sha256 = "PsrOqZgdFIy5tGoLpS+hf9uz42vKJZbSvdWRW8MX604=";
        };

        propagatedBuildInputs = with pkgs.ocamlPackages; [
          melange
          ppxlib
          ocaml_pcre
          lwt
          lwt_ppx
          uri
          quickjs
          #
          yojson
          uucp
        ];
        nativeBuildInputs = with pkgs.ocamlPackages; [
          reason
          melange
          # reason-native.refmett
        ];
      };
      # lib = pkgs.lib if unavailable
      gemini-cli = pkgs.callPackage ./gemini.nix {
        inherit
          (pkgs)
          buildNpmPackage
          fetchFromGitHub
          fetchNpmDeps
          cacert
          curl
          gnused
          jq
          nix-prefetch-github
          prefetch-npm-deps
          writeShellApplication
          ;
      };
    in {
      devShells.default = pkgs.mkShell rec {
        packages = [gemini-cli];
        buildInputs =
          nativeBuildInputs
          ++ (with pkgs.ocamlPackages; [utop]);
        nativeBuildInputs = with pkgs.ocamlPackages; [
          pkgs.openjdk17
          pkgs.nodejs
          pkgs.sqlite
          pkgs.dune_3
          pkgs.ocaml
          pkgs.opam
          findlib
          ocaml-lsp
          ocamlformat
          mlx
          ocamlmerlin-mlx
          ocamlformat-mlx
          melange-json-native
          ppx_rapper
          ppx_rapper_eio
          yojson
          eio_main
          piaf
          routes
          caqti-dynload
          caqti-driver-postgresql
          caqti-driver-sqlite3
          ppx_expect
          logs
          #
          reason
          server-reason-react
        ];
      };
    });
}