From 35ce5ac039d7379ea4098afa25da4dc7dee2ef27 Mon Sep 17 00:00:00 2001
From: Jean-Paul Calderone <exarkun@twistedmatrix.com>
Date: Fri, 27 Sep 2019 13:45:03 -0400
Subject: [PATCH] comment about our twisted patch

---
 nixos/pkgs/twisted.nix | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/nixos/pkgs/twisted.nix b/nixos/pkgs/twisted.nix
index 32fb3437..efa56cd0 100644
--- a/nixos/pkgs/twisted.nix
+++ b/nixos/pkgs/twisted.nix
@@ -1,7 +1,11 @@
 { twisted }:
 twisted.overrideAttrs (old: {
-  version = old.version + "-0";
   prePatch = old.patchPhase;
   patchPhase = null;
+  # Add a patch which adds more logging to a namer resolver failure case.  The
+  # NixOS system test harness might be setting up a weird semi-broken system
+  # that provokes a weird behavior out of getaddrinfo() that Twisted doesn't
+  # normally handle.  The logging can help with debugging this case.  We
+  # should think about upstreaming something related to this.
   patches = (if old ? "patches" then old.patches else []) ++ [ ./twisted.patch ];
 })
-- 
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