flake.nix


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{
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/release-22.05";
    flake-utils.url = "github:numtide/flake-utils/master";

    rust-overlay = {
      url = "github:oxalica/rust-overlay/master";

      inputs = {
        flake-utils.follows = "flake-utils";
        nixpkgs.follows = "nixpkgs";
      };
    };

    naersk = {
      url = "github:nmattia/naersk/master";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  description = "thulani discord bot";

  outputs = {
    self,
    nixpkgs,
    flake-utils,
    ...
  } @ inputs: (flake-utils.lib.eachDefaultSystem (system:
    let
      pkgs = import nixpkgs {
        inherit system;

        overlays = [
          (import inputs.rust-overlay)
        ];
      };

      buildToolchain = pkgs.rust-bin.nightly."2022-11-20".minimal;

      devToolchain = buildToolchain.override {
        extensions = [
          "rust-src"
          "rust-analyzer"
          "clippy"
          "rust-docs"
          "rustfmt"
        ];
      };

      naersk = pkgs.callPackage inputs.naersk {
        cargo = buildToolchain;
        rustc = buildToolchain;
      };

      deps = with pkgs; [
        openssl
        pkgconfig
        libopus
        postgresql
      ];

      inherit (pkgs) lib;

      pkg = naersk.buildPackage {
        pname = "thulani";
        version = self.rev or "dirty";

        src = lib.cleanSource ./.;

        nativeBuildInputs = deps;
        remapPathPrefix = true;
      };

    in {
      devShells.default = pkgs.mkShell {
        buildInputs = (with pkgs; [
          devToolchain
        ]) ++ deps;

        RUST_SRC_PATH = "${devToolchain}/lib/rustlib/src/rust";
      };

      packages.default = pkg;
      apps.default = {
        type = "app";
        program = "${pkg}/bin/thulani";
      };
    })
  );
}