Add homebrew forumlar for k6 version v0.39.0

[cheuk0324]

What?

Why?

Checklist

• I have performed a self-review of my code.
• I have added tests for my changes.
• I have run linter locally (make lint) and all checks pass.
• I have run tests locally (make tests) and all tests pass.
• I have commented on my code, particularly in hard-to-understand areas.

Related PR(s)/Issue(s)

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[mstoykov]

I understand that this was unintentionally opened PR, but I would just like to ask why you are trying to get v0.39.0 which at this point is over 2 years old?

Thank you for your time @cheuk0324 🙇

[cheuk0324]

@mstoykov Apology for the Inconvenience. So we have tests thats only run with older version of the k6 but for some of the new engineers, they are not able to install the older through brew, because the k6 from homebrew is always the latest. So we tried to created the tap with the tag version.

I hope there is an easier way that we can install older version of k6 from homebrew. Or is there better way to do that? Thanks!

[mstoykov]

I hope there is an easier way that we can install older version of k6 from homebrew. Or is there better way to do that? Thanks!

I've never used Mac personally and for that matter homebrew - so no idea.

You can get te binary directly from the release page at the bottom.

So we have tests thats only run with older version of the k6

Can you share what in particular as it seems strange as v0.40.0 didn't really have breaking changes that seem all that impactful. So it seems strange to me that instead of updating scripts you will try to keep to and old version. And in this case an over 2 year old verison.