Nodes now have a background using the libadwaita .card style class. Ports now have a circular handle, which is positioned on the edge of the node so that half of the circle sticks out. Ports are also no longer themed like a button and don't receive a color based on the guessed media type, in a future commit, the handle will be colored instead.
Helvum is a GTK-based patchbay for pipewire, inspired by the JACK tool catia.
Features planned
- Volume control
- "Debug mode" that lets you view advanced information for nodes and ports
More suggestions are welcome!
Building
Via flatpak
If you don't have the flathub repo in your remote-list for flatpak you will need to add that first:
$ flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
Then install the required flatpak platform and SDK, if you dont have them already:
$ flatpak install org.gnome.{Platform,Sdk}//44 org.freedesktop.Sdk.Extension.rust-stable//22.08 org.freedesktop.Sdk.Extension.llvm15//22.08
To compile and install as a flatpak, clone the project, change to the project directory, and run:
$ flatpak-builder --install flatpak-build/ build-aux/org.pipewire.Helvum.json
You can then run the app via
$ flatpak run org.pipewire.Helvum
Manually
For compilation, you will need:
- Meson
- An up-to-date rust toolchain
libclang-3.7or highergtk-4.0andpipewire-0.3development headers
To compile and install, run
$ meson setup build && cd build
$ meson compile
$ meson install
in the repository root.
This will install the compiled project files into /usr/local.
License and Credits
Helvum is distributed under the terms of the GPL3 license. See LICENSE for more information.
Parts of the build system were taken from the gtk-rust-template project, which is provided under the terms of the MIT license.

