anchor.diff:  
   stdenv.mkDerivation {
     pname = "libcamera";
  -  version = "unstable-2022-01-03";
  +  version = "unstable-2022-07-15";
   
     src = fetchgit {
       url = "https://git.libcamera.org/libcamera/libcamera.git";
  -    rev = "1db1e31e664c1f613dc964d8519fe75d67b154b6";
  -    hash = "sha256-pXYPIU9xDWA870Gp1Jgizi5xnUHRvTqEq/ofFXdVZdg=";
  +    rev = "e9b6b362820338d0546563444e7b1767f5c7044c";
  +    hash = "sha256-geqFcMBHcVe7dPdVOal8V2pVItYUdoC+5isISqRG4Wc=";
     };
   
     postPatch = ''
  
positive.code: , openssl
  , libdrm
  , libevent
  , lttng-ust
  , gst_all_1
  , gtest
  
negative.code: 
      # lttng tracing
      lttng-ust
  
      # yamlparser
      libyaml
  
      gtest
    ];
  