Signal doesn't launch after apllying themes

[ectacte]

signal doesnt start after putting @import "catppuccin-.css" in manifest.css nor does it launch when using theme-injector.
Had to reinstall both times

[undefinedcode0]

Have you found any fix? This is also happening to me

[ectacte]

unfortunately no, didnt have much time recently to look into it will most likely give it another try or smth if i fix ill let you know

[TheSunCat]

I did some debugging and found that (at least on NixOS) Signal is failing to find libpulse.so.0 which is preventing it from launching. Setting LD_LIBRARY_PATH allows it to find it, and it opens the window which shows the Signal loading animation infinitely.
Further checking the JavaScript console (using --enable-dev-tools), I found it fails to load libstdc++.so. Adding a path to this lib in LD_LIBRARY_PATH finally allows Signal to launch normally and have the theme applied.

This is a rather dirty workaround, but as I am not familiar with how Electron works I am not sure I can do more. I will do some more research and write what I find here.

[TheSunCat]

Got it, by reading the Nix package here: https://github.com/NixOS/nixpkgs/blob/nixos-24.11/pkgs/by-name/si/signal-desktop/generic.nix#L227-L230

Apparently Signal does not "pack" their .node directory. Adding --unpack '*.node' to the pack command allows it to start up fine for me. See commit: https://git.allpurposem.at/mat/Computer/commit/d0d31a75e85fb1758ba43e74aeeb69da109630fc