anchor.diff:    );
   
     postInstall = ''
  -    install -Dm644 contrib/completions/_ffsend "$out/share/zsh/site-functions/_ffsend"
  -    install -Dm644 contrib/completions/ffsend.bash "$out/share/bash-completion/completions/ffsend.bash"
  -    install -Dm644 contrib/completions/ffsend.fish "$out/share/fish/vendor_completions.d/ffsend.fish"
  +    installShellCompletion contrib/completions/ffsend.{bash,fish} --zsh contrib/completions/_ffsend
     '';
     # There's also .elv and .ps1 completion files but I don't know where to install those
   
  
positive.code: { stdenv, fetchFromGitLab, rustPlatform, cmake, pkgconfig, openssl
  , darwin
  
  , x11Support ? stdenv.isLinux || stdenv.hostPlatform.isBSD
  , xclip ? null, xsel ? null
  
negative.code: 
    cargoSha256 = "1x4hxar60lwimldpsi0frdlssgsb72qahn3dmb980sj6cmbq3f0b";
  
    nativeBuildInputs = [ cmake pkgconfig installShellFiles ];
    buildInputs = [ openssl ]
    ++ stdenv.lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ CoreFoundation CoreServices Security AppKit ])
    ;
  