Browser Extension not working on linux (URI scheme issues)

[whiskycompiler]

What happened?

The browser extension (https://github.com/LykosAI/SMChromeExtension) does not work out of the box in Kubuntu 24.10 (and probably other distros as well) and I could not find any documentation related to things I might have forgotten to setup.

I investigated it a bit and manged to set it up to work for me (although it is pretty hacky).

As far as I could observe the following relevant things happen when the StabilityMatrix.AppImage is stared:

1. it generates the following .desktop file ~/.local/share/applications/stabilitymatrix.desktop

   [Desktop Entry]
   Name=StabilityMatrix
   Exec=/path/to/your/StabilityMatrix.AppImage %u
   Type=Application
   NoDisplay=true
   Categories=Utility
   X-Desktop-File-Install-Version=0.27
   MimeType=x-scheme-handler/stabilitymatrix;x-scheme-handler/stabilitymatrix
   

2. It updates the ~/.config/mimeapps.list and sets the above .desktop file as default for the stabilitymatrix:// URL scheme.

The issue with the .desktop file seems to be the way parameters from the Exec field are passed/handled in the application.
Like above a passed URL seems to be entirely ignored and nothing is downloaded - instead everytime you click on the "Download with Stability Matrix" button a new instance is opened.
When I adjust the parameters at the end of the Exec field to be --uri "%u" it works until the application is restarted (then it will overwrite my changes).

So I did the following to make it do what I expect it to do:

1. I created a new .desktop file ~/.local/share/applications/StabilityMatrixFix.desktop to use in my launcher and as a scheme URL handler.

   [Desktop Entry]
   Exec=/home/<username>/Applications/stability-matrix-fixed-start.sh %u
   Icon=StabilityMatrix.png
   Name=StabilityMatrix
   NoDisplay=false
   StartupNotify=true
   Terminal=false
   Type=Application
   X-KDE-SubstituteUID=false
   Categories=Graphics
   MimeType=x-scheme-handler/stabilitymatrix
   

2. I created a bash script (thank you chatGPT) to handle normal launch and activation for scheme URL

   #!/bin/bash
   
   # Set the correct MIME type association
   xdg-mime default StabilityMatrixFix.desktop x-scheme-handler/stabilitymatrix
   
   # Prepare the command to run the AppImage with a dummy config
   COMMAND="XDG_CONFIG_HOME=./config-dummy /absolute/path/to/your/StabilityMatrix.AppImage"
   
   # If any parameters were passed we assume that an URI launch is requested
   if [ "$#" -gt 0 ]; then
       # if the application is not running we need to start it first (uri parameter prevents normal start)
       if ! ps aux | grep -v grep | grep "StabilityMatrix.AppImage" > /dev/null; then
           eval $COMMAND &
           sleep 15
       fi
   
       COMMAND+=" --uri \"$@\""
   fi
   
   # Run the command
   eval $COMMAND
   
   # Set the MIME type association again just to be sure
   xdg-mime default StabilityMatrixFix.desktop x-scheme-handler/stabilitymatrix
   

The bash script tries to prevent the AppImage from resetting the settings to its own .desktop file which does not work correctly by giving it a fake XDG_CONFIG_HOME directory and also setting my own desktop file as scheme handler on start and exit of the application.
It also handles the weird issue that StabilityMatrix does not start when the --uri parameter is used and no instance is running - it seems to only notify a running instance but simply does nothing if there is none 🤷.

Would be nice if that could be fixed. Otherwise feel free to put the workaround in some kind of readme or documentation.

Steps to reproduce

1. Download StabilityMatrix for Linux and unpack it.
2. Start it and set it up.
3. Install the extension.
4. Go to any model on Civitai and click the "Download with Stability Matrix" button

Expected Result

The model is downloaded.

Actual Result

A new StabilityMatrix instance opens and nothing is downloaded.

Version

2.13.4

What Operating System are you using?

Linux

[whiskycompiler]

I also encounter this issue #1202
Not sure if it is somehow related.

[github-actions]

This issue is stale because it has been open 60 days with no activity. Remove the stale label or comment, else this will be closed in 7 days.

[github-actions]

This issue was closed because it has been stale for 7 days with no activity.

[MS00-GitIt]

also receiving this error