Git 2.7.4 is notable(?) because it is the stock version in Ubuntu 16.04 LTS.¹

However, it's not obvious to me why we should draw the line at Ubuntu 16.04: the Ubuntu project claims to still support 14.04.5 LTS,² and the current release is 18.04 LTS. (Ubuntu 18.04 LTS provides git 2.17,³ which is much more recent.)

I don't actually see a minimum Ubuntu or Git version listed on https://tip.golang.org/doc/install. Perhaps we should add one.

(CC: @rsc @rogpeppe @bradfitz @myitcv)

¹https://packages.ubuntu.com/xenial/vcs/git
²https://wiki.ubuntu.com/Releases
³https://packages.ubuntu.com/bionic/vcs/git

I don't actually see a minimum Ubuntu or Git version listed on https://tip.golang.org/doc/install. Perhaps we should add one.

I think thats a wonderful idea!

Whether Ubuntu 14.04 is a sufficiently broad baseline for this sort of analysis I'm not 100% sure (it's pretty good on the basis it's used by Travis); it ships git version 1.9.1

My development VM was Debian Jessie for the longest time and its old git (https://packages.debian.org/jessie/git-core ... 2.1.4) was what finally forced me to update to stretch.

Note also #26594 (comment), which suggests we might also need to add tests for different remote types.

A builder with git 2.7.4 in the longtest configuration likely would have caught the regression in #33836.

@toothrot, @dmitshur: any chance we could get an Ubuntu 16.04.6 LTS builder set up for longtest mode? It's still supported by Ubuntu through April 2021.

(Note that Ubuntu 14.04.6 LTS reached the end of its Ubuntu “standard support” lifetime in April 2019.)

The current version of the standard linux-amd64 builder (and its -longtest variant) has:

$ git version
git version 2.30.2

Closing as done. (To help keep the issues that are still open more accurate and actionable.)

@dmitshur, IIRC the request here is to set up a builder with an old git, not a new one. 😅

Indeed, I had misread it, thanks for catching.

We can certainly reopen if it's still actionable as is, but as I understand git 2.7.4 is relevant to Ubuntu 16.04 LTS, which passed End of Standard Support in April 2021 (understandably 3 years after this was filed) and so might not be.

Since #26746 is accepted by now, we should try to look at this issue when that proposal is implemented.

Per #26746 (comment), the oldest Git on the builders should be at least 2.17.6. (Versions older than that may be affected by CVE-2021-21300.)