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The original was posted on /r/nixos by /u/Competitive_Bread279 on 2025-07-14 09:56:11+00:00.

Hi just figured I’d put this out there as I had to struggle through this.

If you want to bi-directionally sync protondrive and nixos I used the following:

{
 pkgs,
 secrets,
 ...
}:
{

One time I needed to run a re-sync
----------------------------------

I ran:
------

sudo -u MYUERNAME rclone bisync PROTON\_FOLDER\_LOCATION remote:/ --config=/var/lib/rclone-protondrive/rclone.conf --resync --protondrive-replace-existing-draft=true
=====================================================================================================================================================================

## Create drive mount
 systemd.tmpfiles.rules = [ "d /mnt/protondrive 0755 root root" ];
 ## Add in rclone config
 ## pass is from rclone obscure 'PASSWORDHERE'
 environment.etc."rclone-proton.conf".text = ''
 [remote]
 type = protondrive
 username = ${secrets.proton.email}
 password = ${secrets.proton.pass}  

 '';

# Mount proton drive to /mnt/protondrive
 systemd.services.rclone-protondrive-mount = {
 description = "Mount Proton Drive using rclone";
 after = [ "network-online.target" ];
 wants = [ "network-online.target" ];

serviceConfig = { Type = “simple”; Restart = “on-failure”; RestartSec = “15s”;

StateDirectory = “rclone-USER”; # Change to rclone-YOURUSER for perms?

ExecStartPre = ‘’ /bin/sh -c ‘if [ ! -f “/var/lib/rclone-protondrive/rclone.conf” ]; then ${pkgs.coreutils}/bin/cp /etc/rclone-proton.conf /var/lib/rclone-protondrive/rclone.conf; fi’ ‘’;

ExecStart = ‘’ ${pkgs.rclone}/bin/rclone mount
–config=/var/lib/rclone-protondrive/rclone.conf
–allow-other
–vfs-cache-mode full
remote:/ /mnt/protondrive ‘’;

ExecStop = “${pkgs.fuse}/bin/fusermount -u /mnt/protondrive”; };

wantedBy = [ “multi-user.target” ];

};

# Mount /mnt/protondrive to documents
 systemd.services.proton-bisync = {
 description = "Bidirectional sync between local directory and Proton Drive";
 after = [
 "network-online.target"
 # If VPN, add here
 "rclone-protondrive-mount.service"
 ];
 wants = [ "network-online.target" ];
 serviceConfig = {
 Type = "oneshot";
 User = "USER";

ExecStart = ‘’ ${pkgs.rclone}/bin/rclone bisync ${secrets.proton.file_location} remote:/
–config=/var/lib/rclone-protondrive/rclone.conf ‘’; };

};
 # Push every time file change
 systemd.paths.proton-bisync-push = {
 description = "Watch for changes in SyncDoc directory";
 pathConfig = {
 PathChanged = "${secrets.proton.file\_location}";
 Unit = "proton-bisync.service";
 };
 wantedBy = [ "multi-user.target" ];
 };
 ## Pull every 30min
 systemd.timers.proton-bisync-pull = {
 description = "Timer for Proton Drive bidirectional sync";
 wantedBy = [ "timers.target" ];
 timerConfig = {
 OnBootSec = "5min";
 OnUnitActiveSec = "30min";
 Unit = "proton-bisync.service";
 };
 };
}

If there are any improvements to be made, please do let me know :)