pipewire: introduce roc-toolkit support

[bgamari]

Motivation for this change

roc-streaming is a library for robust streaming of audio data over (unreliable) networks. pipewire has support for it via the libpipewire-module-roc-{sink,source} modules. Here I add derivations for the openfec and roc-toolkit libraries, as well as introduce support for the latter in the pipewire derivation.

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandbox = true set in nix.conf? (See Nix manual)
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 22.05 Release Notes (or backporting 21.11 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
  • (Release notes changes) Ran nixos/doc/manual/md-to-db.sh to update generated release notes
• Fits CONTRIBUTING.md.

[bgamari]

Ccing @jansol

N.B. I have based this on #150999

[Mic92]

@jansol all good?

[jansol]

Haven't tested but looks good with the exception of that openfec flag.

[bgamari]

FWIW, I am able to load the roc-sink and roc-source modules and can stream audio between them.

[bgamari]

For the record, this was tested using the backport to 21.11 in https://github.com/bgamari/nixpkgs/tree/wip/rpi-pipewire-21.11 (which also upgrades pipewire to 0.3.42). Perhaps this should be merged to nixos-21.11?

[Mic92]

For the record, this was tested using the backport to 21.11 in https://github.com/bgamari/nixpkgs/tree/wip/rpi-pipewire-21.11 (which also upgrades pipewire to 0.3.42). Perhaps this should be merged to nixos-21.11?

No strong opinion on that but since is a non-trivial change of the package, we should gives this some weeks in the nixos-unstable channel to see if there any regressions.