How to set minimumGroupSize/groupSingleUpdates/etc for a built-in group?

[felipecrs]

How are you running Renovate?

A Mend.io-hosted app

Which platform you running Renovate on?

GitHub.com

Which version of Renovate are you using?

43.259.2

Please tell us more about your question or problem

There are certain options which only make sense in the group context, like minimumGroupSize and groupSingleUpdates.

I could not find a way, however, to set these options for a built-in group. For example, let's say I want to set minimumGroupSize: 5 for Jackson monorepo:

{
  "packageRules:" [
    {
      "extends": ["group:jacksonMonorepo"],
      "minimumGroupSize": 5
    }
  ]
}

I would have expected it to work, but config-validator rejects it with you should not extend "group" presets.

Logs (if relevant)

No response

[RahulGautamSingh]

Why it doesn't work

group:jacksonMonorepo :- it's a preset whose body is a packageRules array

{
  packageRules: [
    {
      extends: [`monorepo:${monorepo}`],   // e.g. monorepo:jackson
      groupName: `${monorepo} monorepo`,
      matchUpdateTypes: nonPinUpdateTypes,
    },
  ],
}

So when you put "extends": ["group:jacksonMonorepo"] inside a packageRule, Renovate tries to merge a packageRules array into a single package rule. packageRules nested inside a packageRule, which doesn't make sense.

That's what the you should not extend "group:" presets warning is guarding against.

The fix

Build the rule yourself from the monorepo: preset

monorepo:jackson is just match criteria (matchSourceUrls/matchPackageNames), so it's safe to extend inside a packageRule. Replicate what the group preset does and add your group options in the same rule:

{
  "packageRules": [
    {
      "extends": ["monorepo:jackson"],
      "groupName": "jackson monorepo",
      "minimumGroupSize": 5
    }
  ]
}

That produces the identical group to group:jacksonMonorepo, plus your minimumGroupSize. Add "groupSingleUpdates": true to the same rule if you want that too.

[felipecrs]

Yeah, that's the workaround I found too.

[felipecrs]

Something like matchGroupName would probably be nice:

{
  "extends": "config:recommended", // brings jackson monorepo
  "packageRules": [
    {
      "matchGroupName": "jackson monorepo",
      "minimumGroupSize": 5
    }
  ]
}

[RahulGautamSingh]

Welcome as a Suggest Idea discussion.