anchor.diff:    poster3 = throw "poster3 is unmaintained and source is no longer available"; # added 2023-05-29
     postorius = throw "Please use pkgs.mailmanPackages.postorius"; # added 2022-04-29
     powerlineMemSegment = powerline-mem-segment; # added 2021-10-08
  -  prometheus_client = throw "'prometheus_client' has been renamed to/replaced by 'prometheus-client'"; # Converted to throw 2022-09-24
  -  prompt_toolkit = throw "'prompt_toolkit' has been renamed to/replaced by 'prompt-toolkit'"; # Converted to throw 2022-09-24
  +  privacyidea = throw "privacyidea has been renamed to pkgs.privacyidea"; # added 2021-06-20
  +  prometheus_client = prometheus-client; # added 2021-06-10
  +  prompt_toolkit = prompt-toolkit; # added 2021-07-22
     pur = throw "pur has been renamed to pkgs.pur"; # added 2021-11-08
     pydrive = throw "pydrive is broken and deprecated and has been replaced with pydrive2."; # added 2022-06-01
     pyGtkGlade = throw "Glade support for pygtk has been removed"; # added 2022-01-15
  
positive.code:   tensorflow-estimator_2 = tensorflow-estimator; # added 2021-11-25
    tensorflow-tensorboard = tensorboard; # added 2022-03-06
    tensorflow-tensorboard_2 = tensorflow-tensorboard; # added 2021-11-25
    types-cryptography = throw "types-cryptography has been removed because it is obsolete since cryptography version 3.4.4."; # added 2022-05-30
    types-paramiko = throw "types-paramiko has been removed because it was unused."; # added 2022-05-30
    WazeRouteCalculator = wazeroutecalculator; # added 2021-09-29
    webapp2 = throw "webapp2 is unmaintained since 2012"; # added 2022-05-29
    websocket_client = throw "'websocket_client' has been renamed to/replaced by 'websocket-client'"; # Converted to throw 2022-09-24
    xenomapper = throw "xenomapper was moved to pkgs.xenomapper"; # added 2021-12-31
    zc-buildout221 = throw "'zc-buildout221' has been renamed to/replaced by 'zc-buildout'"; # Converted to throw 2022-09-24
    zc_buildout_nix = throw "zc_buildout_nix was pinned to a version no longer compatible with other modules"; # Added 2021-12-08
  })
  
negative.code:   pyialarmxr = pyialarmxr-homeassistant; # added 2022-06-07
    pyialarmxr-homeassistant = throw "The package was removed together with the component support in home-assistant 2022.7.0"; # added 2022-07-07
    pyjson5 = json5; # added 2022-08-28
    pylibgen = throw "pylibgen is unmaintained upstreamed, and removed from nixpkgs"; # added 2020-06-20
    PyLD = pyld; # added 2022-06-22
    pymc3 = pymc; # added 2022-06-05, module was rename starting with 4.0.0
    pymssql = throw "pymssql has been abandoned upstream."; # added 2020-05-04
    pyreadability = readability-lxml; # added 2022-05-24
    pyroute2-core = throw "pyroute2 migrated back to a single package scheme in version 0.7.1"; # added 2022-07-16
    pyroute2-ethtool = throw "pyroute2 migrated back to a single package scheme in version 0.7.1"; # added 2022-07-16
  