From b90cf0612e5963849d0dfe22e95debe834e9abde Mon Sep 17 00:00:00 2001
From: "Aaron L. Zeng" <me@bcc32.com>
Date: Sun, 29 Jan 2023 00:24:25 -0500
Subject: nixos/atop: Remove upgraded logfiles if not replaced

Before this change, starting atop regularly caused a quadratic
increase in the number of log files over time, as each daily log file
was copied (multiple times) to a new file, and then left there because
the upgrade was a no-op.  This eventually led to atop being unable to
start because the log file name became too long!
---
 nixos/modules/programs/atop.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/nixos/modules/programs/atop.nix b/nixos/modules/programs/atop.nix
index 2b14d7c7343..329dd9ccd62 100644
--- a/nixos/modules/programs/atop.nix
+++ b/nixos/modules/programs/atop.nix
@@ -150,6 +150,8 @@ in
                   if ! ${pkgs.diffutils}/bin/cmp -s "$logfile" "$logfile".new
                   then
                     ${pkgs.coreutils}/bin/mv -v -f "$logfile".new "$logfile"
+                  else
+                    ${pkgs.coreutils}/bin/rm -f "$logfile".new
                   fi
                 done
               '';
-- 
cgit 1.4.1