Right to repair is usually a hardware story, but open-source infrastructure faces its own version: the discipline of keeping software actually working over decades. NetXMS started in 2003 and still runs on AIX, Solaris, older RHEL, Windows 7 kiosks, and a long tail of 32-bit ARM, FreeBSD, OpenBSD, and Alpine — users who didn't choose to be a long tail, but chose stability. For them, the contract is that the agent we shipped in February 2009 still talks to the server we shipped last week, and old config files still parse. This talk walks through three war stories from the last year — a 32-bit ARM crash from format-string mismatches, a 14-year-old GTK bug in SWT fixed upstream, and a Mastodon thread that unlocked Solaris SPARC for our Jenkins agents — and five concrete layers of backward compatibility we maintain in code. I'll close with what this approach costs, what it gains, and why software right to repair is inseparable from who we expect to be there when other things break.