Add fixme about purity

diff --git a/virtual/eldiron.nix b/virtual/eldiron.nix
index 097052124b5b8878294e9e3be54ecb64b3bac1f5..8168abc651670a73df2508e822a0e137b786ad28 100644 (file)
--- a/virtual/eldiron.nix
+++ b/virtual/eldiron.nix
@@ -4,6 +4,10 @@
     enableRollback = true;
   };
 
+  # FIXME: improve purity by enforcing sandbox = true in
+  # /etc/nix/nix.conf (need to do something about environment variables
+  # before)
+
   # Full backup:
   # The star after /var/lib/* avoids deleting all folders in case of problem
   # rsync -e "ssh -i /root/.ssh/id_charon_vpn" -aAXvz --delete --numeric-ids --super --rsync-path="sudo rsync" /var/lib/* immae@immae.eu: