feat(nvidia): add service to sync Flatpak driver version

[ledif]

Supersedes get-aurora-dev/common#133.

Tested it on my Bazzite machine which has an NVIDIA card.

○ ublue-nvidia-flatpak-runtime-sync.service - Sync NVIDIA system drivers with Flatpak runtime
     Loaded: loaded (/etc/systemd/system/ublue-nvidia-flatpak-runtime-sync.service; enabled; preset: disabled)
    Drop-In: /usr/lib/systemd/system/service.d
             └─10-timeout-abort.conf
     Active: inactive (dead) (Result: exec-condition) since Wed 2026-04-01 09:16:00 CDT; 1s ago
 Invocation: dedef8b0919a46bca0c115e0bf7a1ae3
  Condition: start condition unmet at Wed 2026-04-01 09:16:00 CDT; 1s ago
    Process: 4341 ExecCondition=/usr/local/bin/TEST-ublue-nvidia-flatpak-runtime-sync check (code=exited, status=1/FAILURE)
   Mem peak: 1.6M
        CPU: 5ms

Apr 01 09:16:00 llano systemd[1]: Starting ublue-nvidia-flatpak-runtime-sync.service - Sync NVIDIA system drivers with Flatpak runtime...
Apr 01 09:16:00 llano systemd[1]: ublue-nvidia-flatpak-runtime-sync.service: Skipped due to 'exec-condition'.
Apr 01 09:16:00 llano systemd[1]: Condition check resulted in ublue-nvidia-flatpak-runtime-sync.service - Sync NVIDIA system drivers with Flatpak runtime being skipped.

It exited because the Flatpak platform was already in sync with the on image driver version, but it seems like it should work when they are not synced.

This is what the driver reports:

❯ cat /proc/driver/nvidia/version
NVRM version: NVIDIA UNIX Open Kernel Module for x86_64  595.58.03  Release Build  (builder@dbdfa680a27e)  Wed Mar 25 09:03:45 UTC 2026
GCC version:  gcc version 15.2.1 20260123 (Red Hat 15.2.1-7) (GCC) 

This is executing the script with -x:

❯ sudo bash -x /usr/local/bin/TEST-ublue-nvidia-flatpak-runtime-sync check
+ set -euo pipefail
++ head -1 /proc/driver/nvidia/version
++ grep -oP '\d+\.\d+\.\d+'
+ SYSTEM_NVIDIA_VERSION=595.58.03
++ echo 595.58.03
++ tr . -
+ FLATPAK_NVIDIA_VERSION=595-58-03
+ case "${1}" in
+ flatpak info --system org.freedesktop.Platform.GL.nvidia-595-58-03
+ flatpak info --system org.freedesktop.Platform.GL32.nvidia-595-58-03
+ echo 'NVIDIA Flatpak runtime 595.58.03 already installed'
NVIDIA Flatpak runtime 595.58.03 already installed
+ exit 1

fixes: ublue-os/aurora#1418

[gemini-code-assist]

Code Review

This pull request introduces a systemd service and a helper script to synchronize NVIDIA system drivers with Flatpak runtimes. The feedback highlights the need for a more robust version detection regex, explicit system-wide installation flags for Flatpak, and the addition of retry logic and timeout extensions in the systemd service to better handle network-dependent tasks.

[renner0e]

I find them annoying to deal with but we should probably also check this for --user flatpaks, would be nice if we could reuse this script here for those as well, but it's a little more tricky to figure that out.

[ledif]

I find them annoying to deal with but we should probably also check this for --user flatpaks, would be nice if we could reuse this script here for those as well, but it's a little more tricky to figure that out.

I agree we should tackle user Flatpaks at some point, but let's stick to just the system ones for this PR.

[renner0e]

Related upstream issue: flatpak/flatpak#3907

[renner0e]

Good stuff