`dart pub deps --json` should output git hash for git source

[dcharkes]

For dart-lang/native#1962 (comment), I'd need dart pub deps --json to additionally output a git hash/ref:

{
  "packages": [
    {
      "name": "webcrypto",
      "version": "0.5.7",
      "kind": "direct",
      "source": "git",
      "ref": "...",
      "dependencies": [
        "ffi",
        "meta",
        "flutter_web_plugins",
        "flutter"
      ],
      "directDependencies": [
        "ffi",
        "meta",
        "flutter_web_plugins",
        "flutter"
      ]
    },
  ]
}

Alternatively, we could reverse engineer it from the path in the .package_config.json, but that means relying on pub internals, which sounds like a bad idea.

[jonasfj]

Why don't you just hardcode the git ref in the pubspec.yaml or even in the dependencies_override section.

[sigurdm]

Also this information is already available in pubspec.lock.

[dcharkes]

Why don't you just hardcode the git ref in the pubspec.yaml or even in the dependencies_override section.

It's not me defining the git dependency, it is our users.

However, @jonasfj and I had a long discussion 2 weeks where the conclusion was that we probably want something more declarative for prebuilt binaries, rather than a general system-shared directory to be used arbitrarily in hooks (dart-lang/native#1962 (comment)). And then we wouldn't need the git hash.

We could use the git hash to shortcut hashing all files, but @sigurdm mentioned he'd rather provide an immutable bool than exposing whether something is published, git, or root.

So, I believe I have no current use cases. Let me close this issue, and reopen it if I come up with one.