anchor.diff:    telepathy_qt = throw "'telepathy_qt' has been renamed to/replaced by 'telepathy-qt'"; # Converted to throw 2022-02-22
     telepathy_qt5 = throw "'telepathy_qt5' has been renamed to/replaced by 'libsForQt5.telepathy'"; # Converted to throw 2022-02-22
     telnet = throw "'telnet' has been renamed to/replaced by 'inetutils'"; # Converted to throw 2022-02-22
  +  terminus = throw "terminus has been removed, it was unmaintained in nixpkgs"; # Added 2021-08-21
     terraform-full = throw "terraform-full has been removed, it was an alias for 'terraform.full'"; # Added 2022-08-02
     terraform_0_13 = throw "terraform_0_13 has been removed from nixpkgs"; # Added 2022-06-26
     terraform_0_14 = throw "terraform_0_14 has been removed from nixpkgs"; # Added 2022-06-26
  
positive.code:   go-repo-root = throw "go-repo-root has been dropped due to the lack of maintanence from upstream since 2014"; # Added 2022-06-02
    gpgstats = throw "gpgstats has been removed: upstream is gone"; # Added 2022-02-06
    gpshell = throw "gpshell has been removed, because it was unmaintained in nixpkgs"; # added 2021-12-17
    graalvm11 = graalvm11-ce; # Added 2021-10-15
    graalvm8-ce = throw "graalvm8-ce has been removed by upstream"; # Added 2021-10-19
    graalvm8 = throw "graalvm8-ce has been removed by upstream"; # Added 2021-10-19
    graalvm8-ee = throw "graalvm8-ee has been removed because it is unmaintained"; # Added 2022-04-15
    graalvm11-ee = throw "graalvm11-ee has been removed because it is unmaintained"; # Added 2022-04-15
    gradio = throw "gradio has been removed because it is unmaintained, use shortwave instead"; # Added 2022-06-03
    grafana-mimir = throw "'grafana-mimir' has been renamed to/replaced by 'mimir'"; # Added 2022-06-07
    gr-ais = throw "'gr-ais' has been renamed to/replaced by 'gnuradio3_7.pkgs.ais'"; # Converted to throw 2022-09-24
    grantlee5 = throw "'grantlee5' has been renamed to/replaced by 'libsForQt5.grantlee'"; # Converted to throw 2022-02-22
    gr-gsm = throw "'gr-gsm' has been renamed to/replaced by 'gnuradio3_7.pkgs.gsm'"; # Converted to throw 2022-09-24
    grib-api = throw "grib-api has been replaced by ecCodes => https://confluence.ecmwf.int/display/ECC/GRIB-API+migration"; # Added 2022-01-05
    gr-limesdr = throw "'gr-limesdr' has been renamed to/replaced by 'gnuradio3_7.pkgs.limesdr'"; # Converted to throw 2022-09-24
    gr-nacl = throw "'gr-nacl' has been renamed to/replaced by 'gnuradio3_7.pkgs.nacl'"; # Converted to throw 2022-09-24
    gr-osmosdr = throw "'gr-osmosdr' has been renamed to/replaced by 'gnuradio3_7.pkgs.osmosdr'"; # Converted to throw 2022-09-24
    gr-rds = throw "'gr-rds' has been renamed to/replaced by 'gnuradio3_7.pkgs.rds'"; # Converted to throw 2022-09-24
    grv = throw "grv has been dropped due to the lack of maintanence from upstream since 2019"; # Added 2022-06-01
    gsettings_desktop_schemas = throw "'gsettings_desktop_schemas' has been renamed to/replaced by 'gsettings-desktop-schemas'"; # Converted to throw 2022-02-22
    gtk_doc = throw "'gtk_doc' has been renamed to/replaced by 'gtk-doc'"; # Converted to throw 2022-02-22
    gtklick = throw "gtklick has been removed from nixpkgs as the project is stuck on python2"; # Added 2022-01-01
    gtmess = throw "gtmess has been removed, because it was a MSN client."; # Added 2021-12-15
    guile-gnome = throw "guile-gnome has been removed"; # Added 2022-01-16
    guileCairo = throw "'guileCairo' has been renamed to/replaced by 'guile-cairo'"; # Converted to throw 2022-02-22
    guileGnome = throw "guile-gnome has been removed"; # Added 2022-01-16
  
negative.code: 
    ### H ###
  
    hal-flash = throw "hal-flash has been removed as Adobe Flash Player is now deprecated"; # Added 2021-02-07
    hardlink = throw "hardlink was merged into util-linux since 2019-06-14."; # Added 2022-08-12
    inherit (harePackages) hare harec; # Added 2022-08-10
    hawkthorne = throw "hawkthorne has been removed because it depended on a broken version of love"; # Added 2022-01-15
    heapster = throw "Heapster is now retired. See https://github.com/kubernetes-retired/heapster/blob/master/docs/deprecation.md"; # Added 2022-04-05
    heimdalFull = throw "'heimdalFull' has been renamed to/replaced by 'heimdal'"; # Converted to throw 2022-02-22
    heme = throw "heme has been removed: upstream is gone"; # added 2022-02-06
    hepmc = hepmc2; # Added 2019-08-05
    hicolor_icon_theme = throw "'hicolor_icon_theme' has been renamed to/replaced by 'hicolor-icon-theme'"; # Converted to throw 2022-02-22
    holdingnuts = throw "holdingnuts was removed from nixpkgs, as the project is no longer developed"; # Added 2022-05-10
    holochain-go = throw "holochain-go was abandoned by upstream"; # Added 2022-01-01
    htmlTidy = throw "'htmlTidy' has been renamed to/replaced by 'html-tidy'"; # Converted to throw 2022-02-22
    ht-rust = xh; # Added 2021-02-13
    hydra-flakes = throw "hydra-flakes: Flakes support has been merged into Hydra's master. Please use `hydra_unstable` now"; # Added 2020-04-06
    hydra-unstable = hydra_unstable; # added 2022-05-10
    hyperspace-cli = throw "hyperspace-cli is out of date, and has been deprecated upstream in favour of using the individual repos instead"; # Added 2022-08-29
  
  