x/website: download button only knows about macOS and Windows

[cespare]

What is the URL of the page with the issue?

https://go.dev/, for example

What is your user agent?

Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36

Screenshot

What did you do?

Clicked the download button on the front page using a Linux machine

What did you expect to see?

A Linux tarball

What did you see instead?

A Windows MSI

Reported on Twitter by @dominikh.

[mvdan]

I can reproduce. How was the new website tested against the old site for regressions? There's also #49754, for example.

[rsc]

This is not a regression.
This part of https://go.dev/ has been like this for a very long time.
People are just paying more attention to it now.
Will fix.

[mvdan]

I meant regression as in: new users navigating to golang.org on Linux no longer get a Linux download button by default :)

[rsc]

Indeed. It's much worse that go.dev has always been like that!

[gopherbot]

Change https://golang.org/cl/366976 mentions this issue: _content: remove go.dev download button "smarts"

[gopherbot]

Change https://golang.org/cl/366975 mentions this issue: _content: fix download button on non-Mac, non-Windows browsers