melos: init at 6.2.0 (#334461)

Author: hatch01

pkgs/by-name/me/melos/add-generic-main.patch

@@ -0,0 +1,48 @@
+diff --git a/bin/melos.dart b/bin/melos.dart
+index 0db7013..218276f 100644
+--- a/bin/melos.dart
++++ b/bin/melos.dart
+@@ -1,11 +1,37 @@
++import 'dart:io';
+ import 'package:cli_launcher/cli_launcher.dart';
+ import 'package:melos/src/command_runner.dart';
+ 
+-Future<void> main(List<String> arguments) async => launchExecutable(
+-      arguments,
+-      LaunchConfig(
++Future<void> main(List<String> arguments) async {
++  final melosYamlPath = findMelosYaml();
++
++  if (melosYamlPath == null) {
++    print('Error: melos.yaml not found in the project.');
++    // Handle the error as needed
++    return;
++  }
++
++  melosEntryPoint(
++    arguments,
++    LaunchContext(
++      directory: Directory.current,
++      localInstallation: ExecutableInstallation(
+         name: ExecutableName('melos'),
+-        launchFromSelf: false,
+-        entrypoint: melosEntryPoint,
++        isSelf: false,
++        packageRoot: melosYamlPath,
+       ),
+-    );
++    ),
++  );
++}
++
++Directory? findMelosYaml() {
++  var directory = Directory.current;
++  while (directory.path != directory.parent.path) {
++    final melosYamlPath = '${directory.path}/melos.yaml';
++    if (File(melosYamlPath).existsSync()) {
++      return directory;
++    }
++    directory = directory.parent;
++  }
++  return null;
++}

pkgs/by-name/me/melos/package.nix

@@ -0,0 +1,44 @@
+{
+  lib,
+  fetchFromGitHub,
+  buildDartApplication,
+}:
+let
+  pname = "melos";
+  version = "6.2.0";
+  src = fetchFromGitHub {
+    owner = "invertase";
+    repo = "melos";
+    rev = "melos-v${version}";
+    hash = "sha256-00K/LwrwjvO4LnXM2PDooQMJ6sXcJy9FBErtEwoMZlM=";
+  };
+in
+buildDartApplication {
+  inherit pname version src;
+
+  sourceRoot = "${src.name}/packages/melos";
+
+  patches = [
+    # This patch (created a melos 6.1.0) modify the method melos use to find path to the root of the projects.
+    # It is needed because when melos is in the nixstore, it break it and fail to find the projects root with melos.yaml
+    ./add-generic-main.patch
+  ];
+
+  pubspecLock = lib.importJSON ./pubspec.lock.json;
+
+  # hard code the path to the melos templates
+  preBuild = ''
+    substituteInPlace lib/src/common/utils.dart --replace-fail "final melosPackageFileUri = await Isolate.resolvePackageUri(melosPackageUri);" "return \"$out\";"
+    substituteInPlace lib/src/common/utils.dart --replace-fail "return p.normalize('\''${melosPackageFileUri!.toFilePath()}/../..');" " "
+    mkdir -p $out
+    cp -r templates $out/
+  '';
+
+  meta = {
+    homepage = "https://github.com/invertase/melos";
+    description = "A tool for managing Dart projects with multiple packages. With IntelliJ and Vscode IDE support. Supports automated versioning, changelogs & publishing via Conventional Commits. ";
+    mainProgram = "melos";
+    license = lib.licenses.asl20;
+    maintainers = [ lib.maintainers.eymeric ];
+  };
+}