anchor.diff:    ### C ###
   
     caddy1 = throw "caddy 1.x has been removed from nixpkgs, as it's unmaintained: https://github.com/caddyserver/caddy/blob/master/.github/SECURITY.md#supported-versions"; # Added 2020-10-02
  -  calibre-py2 = throw "calibre-py2 has been removed from nixpkgs, as calibre has upgraded to python 3. Please use calibre as replacement."; # Added 2021-01-13
  -  calibre-py3 = throw "calibre-py3 has been removed from nixpkgs, as calibre's default python version is now 3. Please use calibre as replacement."; # Added 2021-01-13
  +  calibre-py2 = throw "calibre-py2 has been removed from nixpkgs, as calibre has upgraded to python 3. Please use calibre as replacement"; # Added 2021-01-13
  +  calibre-py3 = throw "calibre-py3 has been removed from nixpkgs, as calibre's default python version is now 3. Please use calibre as replacement"; # Added 2021-01-13
     cantarell_fonts = throw "'cantarell_fonts' has been renamed to/replaced by 'cantarell-fonts'"; # Converted to throw 2022-02-22
  -  cargo-tree = throw "cargo-tree has been removed, use the builtin `cargo tree` command instead."; # Added 2020-08-20
  -  casperjs = throw "casperjs has been removed, it was abandoned by upstream and broken.";
  +  cargo-tree = throw "cargo-tree has been removed, use the builtin `cargo tree` command instead"; # Added 2020-08-20
  +  casperjs = throw "casperjs has been removed, it was abandoned by upstream and broken";
     catfish = xfce.catfish; # Added 2019-12-22
     ccnet = throw "ccnet has been removed because seafile does not depend on it anymore"; # Added 2021-03-25
  -  cde-gtk-theme = throw "cde-gtk-theme has been removed from nixpkgs as it shipped with python2 scripts that didn't work anymore."; # Added 2022-01-12
  -  cgmanager = throw "cgmanager was deprecated by lxc and therefore removed from nixpkgs."; # Added 2020-06-05
  +  cde-gtk-theme = throw "cde-gtk-theme has been removed from nixpkgs as it shipped with python2 scripts that didn't work anymore"; # Added 2022-01-12
  +  cgmanager = throw "cgmanager was deprecated by lxc and therefore removed from nixpkgs"; # Added 2020-06-05
     checkbashism = throw "'checkbashism' has been renamed to/replaced by 'checkbashisms'"; # Converted to throw 2022-02-22
     chronos = throw "chronos has been removed from nixpkgs, as it was unmaintained"; # Added 2020-08-15
     chunkwm = throw "chunkwm has been removed: abandoned by upstream"; # Added 2022-01-07
  
positive.code:   dotnet-netcore = dotnet-runtime; # Added 2021-10-07
    double_conversion = throw "'double_conversion' has been renamed to/replaced by 'double-conversion'"; # Converted to throw 2022-02-22
    draftsight = throw "draftsight has been removed, no longer available as freeware"; # Added 2020-08-14
    dvb_apps = throw "dvb_apps has been removed."; # Added 2020-11-03
    dwarf_fortress = throw "'dwarf_fortress' has been renamed to/replaced by 'dwarf-fortress'"; # Converted to throw 2022-02-22
    dwm-git = throw "dwm-git has been removed from nixpkgs, as it had no updates for 2 years not serving it's purpose."; # Added 2021-02-07
    dylibbundler = macdylibbundler; # Added 2021-04-24
  
    ### E ###
  
negative.code:   lua5_1_sockets = throw "'lua5_1_sockets' has been renamed to/replaced by 'lua51Packages.luasocket'"; # Converted to throw 2022-02-22
    lua5_expat = throw "'lua5_expat' has been renamed to/replaced by 'luaPackages.luaexpat'"; # Converted to throw 2022-02-22
    lua5_sec = throw "'lua5_sec' has been renamed to/replaced by 'luaPackages.luasec'"; # Converted to throw 2022-02-22
    lumpy = throw "lumpy has been removed from nixpkgs, as it is stuck on python2"; # Added 2022-01-12
    lxappearance-gtk3 = throw "lxappearance-gtk3 has been removed. Use lxappearance instead, which now defaults to Gtk3"; # Added 2020-06-03
    lzma = xz; # moved from top-level 2021-03-14
  
  