Change:
buildDotnetModule rec { pname = "OpenUtau"; <del> version = "0.1.158"; </del> <ins> version = "0.1.327"; </ins> src = fetchFromGitHub { owner = "stakira"; repo = "OpenUtau"; rev = "build/${version}"; <del> hash = "sha256-/+hlL2sj/juzWrDcb5dELp8Zdg688XK8OnjKz20rx/M="; </del> <ins> hash = "sha256-Bss32Fk4yBEFqaIxT2dfdvWXz09sO6akiitDQBXoSvY="; </ins> }; <del> patches = [ # Needed until stakira/OpenUtau#836 is merged and released to fix crashing issues. See stakira/OpenUtau#822 (fetchpatch { name = "openutau-update-avalonia-to-11.0.4.patch"; url = "https://github.com/stakira/OpenUtau/commit/0130d7387fb626a72850305dc61d7c175caccc0f.diff"; hash = "sha256-w9PLnfiUtiKY/8+y4qqINeEul4kP72nKEVc5c8p2g7c="; # It looks like fetched files use CRLF but patch comes back with LF decode = "sed -e 's/$/r/'"; }) ]; # Needs binary for above patch due to CRLF shenanigans otherwise being ignored patchFlags = [ "-p1" "--binary" ]; </del> dotnet-sdk = dotnetCorePackages.sdk_7_0; dotnet-runtime = dotnetCorePackages.runtime_7_0;

Discussion:
Package name: openutau Latest released version: Current version on the unstable channel: 0.1.158 Current version on the stable/release channel: - Notify maintainers I don't mind sending a PR to bump the version. I've tried building OpenUtau-0.1.201 on my device, and it works just like the previous instances. The app, however, crashes, when I use any key, just like the current version, for which I've created stakira/OpenUtau. Note for maintainers: Please tag this issue in your PR.
That version is marked as a beta/pre-release upstream. I don't mind bumping to that version if it fixes things for you, though
actually, I don't have a Mac, so I also wanted to make sure that bumping this didn't cause any issue with other platforms out there. Looks like the app-crash behavior still exists in the newer version on Linux.
Slightly out of topic, but if license is going to be an issue, would it be okay for you to add and instead? They're both open-source compatible. They may have to be as plugins for OpenUtau. In the same spirit, we can also make Worldline-R a plugin.
License isn't an issue for me, but I'll try later to see if I can't make a derivation without the proprietary bits if it's a concern for you I vaguely recall thinking the code always expects to find the worldline .so, though, so I'll have to double check what that would take later
Alternatively, if upstream could clarify in-writing the license situation for the (e.g. as unfree source but freely redistributable) then that could also be sufficient for your use-case
Fix for crashes is in and license question has been asked at
Also given your interest in this package, would you like to be a co-maintainer for the OpenUtau derivation in nixpkgs?
I don't have any experience with C# and dotnet applications, but if it involves only bumping the version and removing the temporary patches for dotnet and Avalonia 11.0.4, I could do that.
It's up to you!

I'm happy to have assistance for bumps and stuff if nothing else, but you don't have to add yourself as maintainer unless you want to :)
I have no issue with adding myself as the co-maintainer, but it looks like you'd have to wait for to get merged, because I've myself there in the . file
License update in too now, btw