[nine_k]

Quarterly upgrades, four years: 16 upgrades. A dozen build breaks means that 75% upgrades face a build break.

Since it's over the total number of builds for 20-30 services, it should not be that bad; instead, sometimes there happened a completely uneventful upgrade of everything!

[physicles]

You’re right. Going back over some notes (including go.mod’s history), we’ve been at this for six years, not four. And a dozen build breaks is probably an overestimate — it’s more like one every 12-18 months. Most upgrades are uneventful, everything just continues working.