Support version overrides

[harelmo]

Related to #63 .

@JamieMason This is an initial sketch of the proposed solution, I'd be glad to get feedback and evolve this according to any suggestions or guidelines.

Thanks 🙏

[JamieMason]

Appreciate it @harelmo. Just a note that I may take a little while to pick this up as my spare time is being spent working on an app, but I'll try not to keep you waiting unnecessarily.

[harelmo]

Appreciate it @harelmo. Just a note that I may take a little while to pick this up as my spare time is being spent working on an app, but I'll try not to keep you waiting unnecessarily.

Thanks, I really appreciate it

[JamieMason]

Hey @harelmo, good news and bad news is that 6.0.0 is released, which is a little easier to develop on and has some new features, but means a lot of conflicts for this PR 😬 .

[JamieMason]

I think one approach can potentially solve #63, #44, and #53. I'll push some tests for the use cases that have been mentioned, to be implemented later. The approach would need to support versionGroups.

EDIT: some use cases I've heard of below, any more?

(1) Set every dependency from the AWS SDK to all use 1.64.1 in the whole monorepo.

• @aws-cdk/assert 1.64.1
• @aws-cdk/aws-s3 1.64.1
• @aws-cdk/aws-ssm 1.64.1
• @aws-cdk/core 1.64.1

{
  "versionGroups": [
    {
      "dependencies": ["@aws-cdk/**"],
      "packages": ["**"],
      "pinVersion": "1.64.1"
    }
  ]
}

(2) Set every dependency from the AWS SDK to 1.64.1 in your alpha packages, and 0.37.0 for those
packages in the rest of the monorepo:

{
  "versionGroups": [
    {
      "dependencies": ["@aws-cdk/**"],
      "packages": ["@alpha/**"],
      "pinVersion": "1.64.1"
    },
    {
      "dependencies": ["@aws-cdk/**"],
      "packages": ["**"],
      "pinVersion": "0.37.0"
    }
  ]
}

(3) Lock the version of lodash everywhere

{
  "versionGroups": [
    {
      "dependencies": ["lodash"],
      "packages": ["**"],
      "pinVersion": "14.17.0"
    }
  ]
}

(4) Use webpack 4 in some packages and webpack 5 in others

{
  "versionGroups": [
    {
      "dependencies": ["webpack"],
      "packages": ["@old-stuff/server", "@old-stuff/ui"],
      "pinVersion": "4.x.x"
    },
    {
      "dependencies": ["webpack"],
      "packages": ["@new-stuff/server", "@new-stuff/ui"],
      "pinVersion": "5.x.x"
    }
  ]
}

[JamieMason]

This should now be possible in 6.1.0, thanks for contributing.