From 199b4c47434aecea7aa56edb82879327df228b23 Mon Sep 17 00:00:00 2001
From: Pierre Bourdon <delroth@gmail.com>
Date: Wed, 5 Dec 2018 04:24:20 +0100
Subject: [PATCH] prometheus/exporters/tor: make CPython happy by defining
 $HOME

---
 .../modules/services/monitoring/prometheus/exporters/tor.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/nixos/modules/services/monitoring/prometheus/exporters/tor.nix b/nixos/modules/services/monitoring/prometheus/exporters/tor.nix
index 0e2a13c44ab7..e0ae83802425 100644
--- a/nixos/modules/services/monitoring/prometheus/exporters/tor.nix
+++ b/nixos/modules/services/monitoring/prometheus/exporters/tor.nix
@@ -36,5 +36,10 @@ in
           ${concatStringsSep " \\\n  " cfg.extraFlags}
       '';
     };
+
+    # CPython requires a process to either have $HOME defined or run as a UID
+    # defined in /etc/passwd. The latter is false with DynamicUser, so define a
+    # dummy $HOME. https://bugs.python.org/issue10496
+    environment = { HOME = "/var/empty"; };
   };
 }