anchor.diff:  , gtkspell3
   , glib
   , libgee
  +, pcre
   , sqlite
   , discount
   , wrapGAppsHook
  -, withPantheon ? false }:
  +, withPantheon ? false
  +}:
   
   stdenv.mkDerivation rec {
     pname = "notes-up";
  -  version = "2.0.2";
  +  version = "unstable-2020-12-29";
   
     src = fetchFromGitHub {
       owner = "Philip-Scott";
       repo = "Notes-up";
  -    rev = version;
  -    sha256 = "0bklgp8qrrj9y5m77xqbpy1ld2d9ya3rlxklgzx3alffq5312i4s";
  +    rev = "2ea9f35f588769758f5d2d4436d71c4059141a6f";
  +    sha256 = "sha256-lKOM9+s34xYB9bF9pgip9DFu+6AaxSE4HjFVhoWtttk=";
     };
   
     nativeBuildInputs = [
       cmake
       ninja
  -    # fails with newer vala: https://github.com/Philip-Scott/Notes-up/issues/349
  -    vala_0_46
  +    vala
       pkg-config
       wrapGAppsHook
     ];
  
positive.code: { lib, stdenv
  , fetchFromGitHub
  , nix-update-script
  , pantheon
  , pkg-config
  , vala_0_46
  , cmake
  , ninja
  , gtk3
  
negative.code: 
    meta = with lib; {
      description = "Markdown notes editor and manager designed for elementary OS"
        + lib.optionalString withPantheon " - built with Contractor support";
      homepage = "https://github.com/Philip-Scott/Notes-up";
      license = licenses.gpl2Only;
      maintainers = with maintainers; [ davidak ];
      platforms = platforms.linux;
    };
  