Fedora Atomic, flatpak install, can't brew-installed node20

[PeterGrace]

Hi there!

I am trying to install a plugin that requires node 20. I have node20 installed via linuxbrew on my fedora-atomic based system. The flatpak install can't find the node install. I'm not sure how to proceed -- is it possible to install node inside of the flatpak's folder structure somehow so that the flatpak app can find it?

[Terrorwolf01]

You can try to install https://github.com/flathub/org.freedesktop.Sdk.Extension.node20 with the command "flatpak install org.freedesktop.Sdk.Extension.node20". If it works with newer Node installs, I recommend to install Node24 tho since Node20 is only Maintenance Support anymore.

And then you need to set this variable when starting OpenDeck apperently: FLATPAK_ENABLE_SDK_EXT=node20

[PeterGrace]

Thanks for the suggestion but it didn't do the trick.

I installed the flatpak:

  $   flatpak list | grep node
Node.js 20.x    org.freedesktop.Sdk.Extension.node20    20.19.5 24.08   flathub system

And I killed out opendeck and restarted it with the env var:

  $   for i in $(ps ax |grep opendeck|grep -v grep|awk '{print $1}'); do strings /proc/$i/environ | grep FLATPAK_ENABLE_SDK_EXT;done
FLATPAK_ENABLE_SDK_EXT=node20
FLATPAK_ENABLE_SDK_EXT=node20
FLATPAK_ENABLE_SDK_EXT=node20

but am still getting the error:

[2025-10-22][20:28:25][opendeck::zip_extract][DEBUG] Extracted 23 files
[2025-10-22][20:28:25][opendeck::events::frontend::plugins][WARN] Failed to initialise plugin at /home/pgrace/.var/app/me.amankhanna.opendeck/config/opendeck/plugins/de.perdoctus.streamdeck.homeassistant.sdPlugin: Node.js version 20.0.0 or higher is required
[2025-10-22][20:28:25][opendeck::events::frontend][ERROR] Node.js version 20.0.0 or higher is required

Any other ideas?

[PeterGrace]

I also tried setting the environment variable in both the command line that starts opendeck, as well as using flatseal to set the override inside flatpak itself, but still getting the error.

[Terrorwolf01]

I don't really have more ideas unfortunately. You could ask in the Discord if anybody has a similar setup maybe.

[PeterGrace]

What I had to do was install nvm, install node with it, and then symlink the node binary into /usr/local/bin after which the error went away.