nixpkgs/pkgs/build-support/dart/build-dart-application/generators.nix

{ lib
, stdenvNoCC
, dart
, dartHooks
, jq
, yq
, cacert
}:

{
  # Arguments used in the derivation that builds the Dart package.
  # Passing these is recommended to ensure that the same steps are made to
  # prepare the sources in both this derivation and the one that builds the Dart
  # package.
  buildDrvArgs ? { }
, ...
}@args:

# This is a derivation and setup hook that can be used to fetch dependencies for Dart projects.
# It is designed to be placed in the nativeBuildInputs of a derivation that builds a Dart package.
# Providing the buildDrvArgs argument is highly recommended.
let
  buildDrvInheritArgNames = [
    "name"
    "pname"
    "version"
    "src"
    "sourceRoot"
    "setSourceRoot"
    "preUnpack"
    "unpackPhase"
    "unpackCmd"
    "postUnpack"
    "prePatch"
    "patchPhase"
    "patches"
    "patchFlags"
    "postPatch"
  ];

  buildDrvInheritArgs = builtins.foldl'
    (attrs: arg:
      if buildDrvArgs ? ${arg}
      then attrs // { ${arg} = buildDrvArgs.${arg}; }
      else attrs)
    { }
    buildDrvInheritArgNames;

  drvArgs = buildDrvInheritArgs // (removeAttrs args [ "buildDrvArgs" ]);
  name = (if drvArgs ? name then drvArgs.name else "${drvArgs.pname}-${drvArgs.version}");

  # Adds the root package to a dependency package_config.json file from pub2nix.
  linkPackageConfig = { packageConfig, extraSetupCommands ? "" }: stdenvNoCC.mkDerivation (drvArgs // {
    name = "${name}-package-config-with-root.json";

    nativeBuildInputs = drvArgs.nativeBuildInputs or [ ] ++ args.nativeBuildInputs or [ ] ++ [ jq yq ];

    dontBuild = true;

    installPhase = ''
      runHook preInstall

      packageName="$(yq --raw-output .name pubspec.yaml)"
      jq --arg name "$packageName" '.packages |= . + [{ name: $name, rootUri: "../", packageUri: "lib/" }]' '${packageConfig}' > "$out"
      ${extraSetupCommands}

      runHook postInstall
    '';
  });
in
{
  inherit
    linkPackageConfig;
}