anchor.diff: -{ stdenv, fetchFromGitHub, fetchpatch, vala, pkgconfig, meson, ninja, python3, granite, gtk3
  +{ stdenv, fetchFromGitHub, fetchpatch, vala_0_40, pkgconfig, meson, ninja, python3, granite, gtk3
   , gnome3, desktop-file-utils, json-glib, libsoup, poppler, gobjectIntrospection, wrapGAppsHook }:
   
   stdenv.mkDerivation rec {
     pname = "aesop";
  -  version = "1.0.5";
  +  version = "1.0.7";
   
     name = "${pname}-${version}";
   
  
positive.code:     ninja
      pkgconfig
      python3
      vala
      wrapGAppsHook
    ];
  
    buildInputs = [
      gnome3.libgee
      granite
      gtk3
      json-glib
      libsoup
      poppler
    ];
  
    # Fix build with vala 0.42
    patches = [
      (fetchpatch {
        url = "https://github.com/lainsce/aesop/commit/a90b3c711bd162583533370deb031c2c6254c82d.patch";
        sha256 = "1zf831g6sqq3966q0i00x3jhlbfh9blcky6pnyp5qp59hxyxy169";
      })
    ];
  
    postPatch = ''
  
negative.code: 
    meta = with stdenv.lib; {
      description = "The simplest PDF viewer around";
      homepage = https://github.com/lainsce/aesop;
      license = licenses.gpl2Plus;
      maintainers = with maintainers; [ worldofpeace ];
      platforms = platforms.linux;
    };
  }
  