Make /etc/localtime a direct symlink to the zoneinfo file

Some programs (notably the Java Runtime Environment) expect to be able
to extract the name of the time zone from the target of the
/etc/localtime symlink.  That doesn't work if /etc/localtime is a
symlink to /etc/static/localtime.  So make it a direct symlink.

1 files changed, 4 insertions, 1 deletions

diff --git a/nixos/modules/config/timezone.nix b/nixos/modules/config/timezone.nix
index 07a76d9ad1fa..979778046fda 100644
--- a/nixos/modules/config/timezone.nix
+++ b/nixos/modules/config/timezone.nix
@@ -27,7 +27,10 @@ with pkgs.lib;
     environment.variables.TZDIR = "/etc/zoneinfo";
     environment.variables.TZ = config.time.timeZone;
 
-    environment.etc.localtime.source = "${pkgs.tzdata}/share/zoneinfo/${config.time.timeZone}";
+    environment.etc.localtime =
+      { source = "${pkgs.tzdata}/share/zoneinfo/${config.time.timeZone}";
+        mode = "direct-symlink";
+      };
 
     environment.etc.zoneinfo.source = "${pkgs.tzdata}/share/zoneinfo";