Change:
<ins> { cmake , darwin , fetchFromGitHub , ffmpeg , fontconfig , git , lib , libGL , libxkbcommon , makeDesktopItem , openssl , pkg-config , rustPlatform , stdenv , wayland , xorg }: rustPlatform.buildRustPackage rec { pname = "gossip"; version = "0.9"; src = fetchFromGitHub { hash = "sha256-m0bIpalH12GK7ORcIk+UXwmBORMKXN5AUtdEogtkTRM="; owner = "mikedilger"; repo = "gossip"; rev = version; }; cargoLock = { lockFile = ./Cargo.lock; outputHashes = { "ecolor-0.23.0" = "sha256-Jg1oqxt6YNRbkoKqJoQ4uMhO9ncLUK18BGG0fa+7Bow="; "egui-video-0.1.0" = "sha256-3483FErslfafCDVYx5qD6+amSkfVenMGMlEpPDnTT1M="; "ffmpeg-next-6.0.0" = "sha256-EkzwR5alMjAubskPDGMP95YqB0CaC/HsKiGVRpKqUOE="; "ffmpeg-sys-next-6.0.1" = "sha256-UiVKhrgVkROc25VSawxQymaJ0bAZ/dL0xMQErsP4KUU="; "gossip-relay-picker-0.2.0-unstable" = "sha256-3rbjtpxNN168Al/5TM0caRLRd5mxLZun/qVhsGwS7wY="; "heed-0.20.0-alpha.6" = "sha256-TFUC6SXNzNXfX18/RHFx7fq7O2le+wKcQl69Uv+CQkY="; "nip44-0.1.0" = "sha256-of1bG7JuSdR19nXVTggHRUnyVDMlUrkqioyN237o3Oo="; "nostr-types-0.7.0-unstable" = "sha256-B+hOZ4TRDSWgzyAc/yPiTWeU0fFCBPJG1XOHyoXfuQc="; "qrcode-0.12.0" = "sha256-onnoQuMf7faDa9wTGWo688xWbmujgE9RraBialyhyPw="; "sdl2-0.35.2" = "sha256-qPId64Y6UkVkZJ+8xK645at5fv3mFcYaiInb0rGUfL4="; "speedy-0.8.6" = "sha256-ltJQud1kEYkw7L2sZgPnD/teeXl2+FKgyX9kk2IC2Xg="; }; }; # See https://github.com/mikedilger/gossip/blob/0.9/README.md. RUSTFLAGS = "--cfg tokio_unstable"; # Some users might want to add "rustls-tls(-native)" for Rust TLS instead of OpenSSL. buildFeatures = [ "video-ffmpeg" "lang-cjk" ]; nativeBuildInputs = [ cmake git pkg-config rustPlatform.bindgenHook ]; buildInputs = [ ffmpeg fontconfig libGL libxkbcommon openssl ] ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.AppKit darwin.apple_sdk.frameworks.CoreGraphics darwin.apple_sdk.frameworks.Foundation ] ++ lib.optionals stdenv.isLinux [ wayland xorg.libX11 xorg.libXcursor xorg.libXi xorg.libXrandr ]; # Tests rely on local files, so disable them. (I'm too lazy to patch it.) doCheck = false; postInstall = '' mkdir -p $out/logo cp $src/logo/gossip.png $out/logo/gossip.png mkdir -p $out/share/icons/hicolor/128x128/apps ln -s $out/logo/gossip.png $out/share/icons/hicolor/128x128/apps/gossip.png ''; postFixup = '' patchelf $out/bin/gossip  --add-rpath ${lib.makeLibraryPath [ libGL libxkbcommon wayland ]} ''; desktopItems = [ (makeDesktopItem { name = "Gossip"; exec = "gossip"; icon = "gossip"; comment = meta.description; desktopName = "Gossip"; categories = [ "Chat" "Network" "InstantMessaging" ]; startupWMClass = "gossip"; }) ]; meta = with lib; { description = "Desktop client for nostr, an open social media protocol"; downloadPage = "https://github.com/mikedilger/gossip/releases/tag/${version}"; homepage = "https://github.com/mikedilger/gossip"; license = licenses.mit; mainProgram = "gossip"; maintainers = with maintainers; [ msanft ]; platforms = platforms.unix; }; } </ins>

Discussion:
Project description Gossip is a desktop client for NOSTR Nostr is an open social media protocol empowering lots of software such as this client. The experience is kind of like Twitter except that you control your own account, and you can post to many different independent places called "relays". People are finding many additional uses for NOSTR that go far beyond micro-blogging or chatting, but this client is focused on those. Nostr stands for "Notes and Other Stuff Transmitted by Relays." Metadata homepage URL: source URL: license: mit platforms: linux, darwin, windows Add a :+1: [reaction] to [issues you find important]. [reaction]: [issues you find important]:
BTW, dear packagers... if you don't know Nostr yet and want to know more, just install Amethyst (Android) or Damus (IOs) on your cellphones, create an account and reach out to me: Handler: Pub-Key: npub14g72qhcsyng6anarycu0v0f570hy982ly9yugf7ulln0rvxkrscqpucr5w =)