package.json not commited in Yarn workspaces

[Leko]

Environment

• Version: 0.4.7
• package manager: yarn
• directory structure: yarn workspaces

Overview

In yarn workspaces, send pull request successfully but only committed yarn.lock.

  hothouse:Engine Try to save: /Users/leko/.ghq/github.com/org/repo/modules/xxx/package.json +1ms
  hothouse:Engine Try to update dependencies in xxx with Yarn +0ms
  hothouse:Engine modules/xxx Set { 'package.json', 'yarn.lock' } +38s
  hothouse:Engine No updates available in: /Users/leko/.ghq/github.com/org/repo/modules/yyy. Skipped +0ms
  hothouse:Engine { allChangeSet: Set { 'package.json', 'yarn.lock' } } +0ms

I think the behavior is strange:

  hothouse:Engine modules/xxx Set { 'package.json', 'yarn.lock' } +38s

It should be modules/xxx/package.json not package.json.

Actual behavior

  hothouse:Engine { allChangeSet: Set { 'package.json', 'yarn.lock' } }

Expected behavior

  hothouse:Engine { allChangeSet: Set { 'modules/xxx/package.json', 'yarn.lock' } }

hothouse/packages/@hothouse/monorepo-yarn-workspaces/src/index.js

Line 58 in 0c856b0

path.join(rootDirectory, "package.json"),

This line contains a bug.
It should be path.join(packageDirectory, "package.json") not path.join(rootDirectory, "package.json").