diff --git a/pkgs/applications/audio/caudec/default.nix b/pkgs/applications/audio/caudec/default.nix
index 15ebb85136b0..a595f285c68a 100644
--- a/pkgs/applications/audio/caudec/default.nix
+++ b/pkgs/applications/audio/caudec/default.nix
@@ -1,15 +1,11 @@
 { lib, stdenv, fetchurl, makeWrapper, bash, bc, findutils, flac, lame, opusTools, procps, sox }:
 
-let
-  version = "1.7.5";
-in
-
-stdenv.mkDerivation {
+stdenv.mkDerivation rec {
   pname = "caudec";
-  inherit version;
+  version = "1.7.5";
 
   src = fetchurl {
-    url = "http://caudec.net/downloads/caudec-${version}.tar.gz";
+    url = "http://caudec.cocatre.net/downloads/caudec-${version}.tar.gz";
     sha256 = "5d1f5ab3286bb748bd29cbf45df2ad2faf5ed86070f90deccf71c60be832f3d5";
   };
 
@@ -31,7 +27,7 @@ stdenv.mkDerivation {
   '';
 
    meta = with lib; {
-    homepage = "http://caudec.net/";
+    homepage = "https://caudec.cocatre.net/";
     description = "A multiprocess audio converter that supports many formats (FLAC, MP3, Ogg Vorbis, Windows codecs and many more)";
     license     = licenses.gpl3;
     platforms   = platforms.linux ++ platforms.darwin;
diff --git a/pkgs/applications/blockchains/bitcoin/default.nix b/pkgs/applications/blockchains/bitcoin/default.nix
index e1a0dd207a0a..35ab9791ec73 100644
--- a/pkgs/applications/blockchains/bitcoin/default.nix
+++ b/pkgs/applications/blockchains/bitcoin/default.nix
@@ -98,7 +98,7 @@ stdenv.mkDerivation rec {
       parties. Users hold the crypto keys to their own money and transact directly
       with each other, with the help of a P2P network to check for double-spending.
     '';
-    homepage = "https://bitcoin.org/";
+    homepage = "https://bitcoin.org/en/";
     downloadPage = "https://bitcoincore.org/bin/bitcoin-core-${version}/";
     changelog = "https://bitcoincore.org/en/releases/${version}/";
     maintainers = with maintainers; [ prusnak roconnor ];
diff --git a/pkgs/applications/networking/bee/bee.nix b/pkgs/applications/networking/bee/bee.nix
index 0e269bf9ab3f..d2f1740a573d 100644
--- a/pkgs/applications/networking/bee/bee.nix
+++ b/pkgs/applications/networking/bee/bee.nix
@@ -62,7 +62,7 @@ buildGoModule {
   '';
 
   meta = with lib; {
-    homepage = "https://swarm.ethereum.org/";
+    homepage = "https://github.com/ethersphere/bee";
     description = "Ethereum Swarm Bee";
     longDescription = ''
       A decentralised storage and communication system for a sovereign digital society.
diff --git a/pkgs/applications/office/banking/default.nix b/pkgs/applications/office/banking/default.nix
index c71c1eafa66c..e6c5192b0f94 100644
--- a/pkgs/applications/office/banking/default.nix
+++ b/pkgs/applications/office/banking/default.nix
@@ -60,7 +60,7 @@ python3.pkgs.buildPythonApplication rec {
 
   meta = with lib; {
     description = "Banking application for small screens";
-    homepage = "https://tabos.gitlab.io/project/banking/";
+    homepage = "https://tabos.gitlab.io/projects/banking/";
     license = licenses.gpl3Plus;
     maintainers = with maintainers; [ dotlambda ];
   };
diff --git a/pkgs/data/fonts/comic-relief/default.nix b/pkgs/data/fonts/comic-relief/default.nix
index 1f5ce7f642fa..b5a7e8878876 100644
--- a/pkgs/data/fonts/comic-relief/default.nix
+++ b/pkgs/data/fonts/comic-relief/default.nix
@@ -19,7 +19,7 @@ in fetchzip rec {
   sha256 = "0dz0y7w6mq4hcmmxv6fn4mp6jkln9mzr4s96vsg68wrl5b7k9yff";
 
   meta = with lib; {
-    homepage = "http://loudifier.com/comic-relief/";
+    homepage = "https://fontlibrary.org/en/font/comic-relief";
     description = "A font metric-compatible with Microsoft Comic Sans";
     longDescription = ''
       Comic Relief is a typeface designed to be metrically equivalent
diff --git a/pkgs/development/compilers/asn1c/default.nix b/pkgs/development/compilers/asn1c/default.nix
deleted file mode 100644
index a4e822eec6da..000000000000
--- a/pkgs/development/compilers/asn1c/default.nix
+++ /dev/null
@@ -1,33 +0,0 @@
-{ lib, stdenv, fetchurl, perl }:
-
-stdenv.mkDerivation rec {
-  pname = "asn1c";
-  version = "0.9.28";
-
-  src = fetchurl {
-    url = "https://lionet.info/soft/asn1c-${version}.tar.gz";
-    sha256 = "1fc64g45ykmv73kdndr4zdm4wxhimhrir4rxnygxvwkych5l81w0";
-  };
-
-  outputs = [ "out" "doc" "man" ];
-
-  buildInputs = [ perl ];
-
-  preConfigure = ''
-    patchShebangs examples/crfc2asn1.pl
-  '';
-
-  postInstall = ''
-    cp -r skeletons/standard-modules $out/share/asn1c
-  '';
-
-  doCheck = true;
-
-  meta = with lib; {
-    homepage = "http://lionet.info/asn1c/compiler.html";
-    description = "Open Source ASN.1 Compiler";
-    license = licenses.bsd2;
-    platforms = platforms.all;
-    maintainers = [ maintainers.montag451 ];
-  };
-}
diff --git a/pkgs/development/coq-modules/CoLoR/default.nix b/pkgs/development/coq-modules/CoLoR/default.nix
index 46738343431a..24a7f125599d 100644
--- a/pkgs/development/coq-modules/CoLoR/default.nix
+++ b/pkgs/development/coq-modules/CoLoR/default.nix
@@ -23,7 +23,7 @@ with lib; mkCoqDerivation {
   enableParallelBuilding = false;
 
   meta = {
-    homepage = "http://color.inria.fr/";
+    homepage = "https://github.com/fblanqui/color";
     description = "CoLoR is a library of formal mathematical definitions and proofs of theorems on rewriting theory and termination whose correctness has been mechanically checked by the Coq proof assistant.";
     maintainers = with maintainers; [ jpas jwiegley ];
   };
diff --git a/pkgs/development/libraries/aqbanking/default.nix b/pkgs/development/libraries/aqbanking/default.nix
index 1e11661b0098..2db69f8028c4 100644
--- a/pkgs/development/libraries/aqbanking/default.nix
+++ b/pkgs/development/libraries/aqbanking/default.nix
@@ -29,7 +29,7 @@ in stdenv.mkDerivation rec {
 
   meta = with lib; {
     description = "An interface to banking tasks, file formats and country information";
-    homepage = "https://www.aquamaniac.de/";
+    homepage = "https://www.aquamaniac.de/rdm/";
     hydraPlatforms = [];
     license = licenses.gpl2Plus;
     maintainers = with maintainers; [ goibhniu ];
diff --git a/pkgs/development/libraries/argtable/default.nix b/pkgs/development/libraries/argtable/default.nix
index f22f81c87709..9752b9600397 100644
--- a/pkgs/development/libraries/argtable/default.nix
+++ b/pkgs/development/libraries/argtable/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    homepage = "https://argtable.org";
+    homepage = "https://github.com/argtable/argtable3";
     description = "A single-file, ANSI C command-line parsing library";
     longDescription = ''
       Argtable is an open source ANSI C library that parses GNU-style
diff --git a/pkgs/development/python-modules/beancount/default.nix b/pkgs/development/python-modules/beancount/default.nix
index 31f8a24d8b76..665fd6806bfa 100644
--- a/pkgs/development/python-modules/beancount/default.nix
+++ b/pkgs/development/python-modules/beancount/default.nix
@@ -48,7 +48,7 @@ buildPythonPackage rec {
   ];
 
   meta = with lib; {
-    homepage = "http://furius.ca/beancount/";
+    homepage = "https://github.com/beancount/beancount";
     description = "Double-entry bookkeeping computer language";
     longDescription = ''
         A double-entry bookkeeping computer language that lets you define
diff --git a/pkgs/development/tools/misc/astyle/default.nix b/pkgs/development/tools/misc/astyle/default.nix
index 66e972826cb9..4ce8c1edffd4 100644
--- a/pkgs/development/tools/misc/astyle/default.nix
+++ b/pkgs/development/tools/misc/astyle/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
 
   meta = with lib; {
     description = "Source code indenter, formatter, and beautifier for C, C++, C# and Java";
-    homepage = "https://astyle.sourceforge.net/";
+    homepage = "http://astyle.sourceforge.net/";
     license = licenses.lgpl3;
     platforms = platforms.unix;
   };
diff --git a/pkgs/development/tools/misc/bin_replace_string/default.nix b/pkgs/development/tools/misc/bin_replace_string/default.nix
deleted file mode 100644
index a732d6e732c5..000000000000
--- a/pkgs/development/tools/misc/bin_replace_string/default.nix
+++ /dev/null
@@ -1,31 +0,0 @@
-{ lib, stdenv, fetchurl, libelf, txt2man }:
-
-stdenv.mkDerivation {
-  pname = "bin_replace_string";
-  version = "0.2";
-
-  src = fetchurl {
-    sha256 = "1gnpddxwpsfrg4l76x5yplsvbcdbviybciqpn22yq3g3qgnr5c2a";
-    url = "ftp://ohnopub.net/mirror/bin_replace_string-0.2.tar.bz2";
-  };
-
-  buildInputs = [ libelf ];
-  nativeBuildInputs = [ txt2man ];
-
-  enableParallelBuilding = true;
-
-  meta = with lib; {
-    description = "Edit precompiled binaries";
-    longDescription = ''
-      bin_replace_string edits C-style strings in precompiled binaries. This is
-      intended to be useful to replace arbitrary strings in binaries whose
-      source code is not available. However, because of the nature of compiled
-      binaries, bin_replace_string may only replace a given C-string with a
-      shorter C-string.
-    '';
-    homepage = "http://ohnopub.net/~ohnobinki/bin_replace_string/";
-    downloadPage = "ftp://ohnopub.net/mirror/";
-    license = licenses.gpl3Plus;
-    platforms = platforms.linux;
-  };
-}
diff --git a/pkgs/games/banner/default.nix b/pkgs/games/banner/default.nix
index 613947c677a5..befb29f6ffc9 100644
--- a/pkgs/games/banner/default.nix
+++ b/pkgs/games/banner/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
   };
 
   meta = with lib; {
-    homepage = "https://software.cedar-solutions.com/utilities.html";
+    homepage = "https://github.com/pronovic/banner";
     description = "Print large banners to ASCII terminals";
     license = licenses.gpl2Only;
 
diff --git a/pkgs/games/crafty/default.nix b/pkgs/games/crafty/default.nix
deleted file mode 100644
index b5b53aa3c413..000000000000
--- a/pkgs/games/crafty/default.nix
+++ /dev/null
@@ -1,73 +0,0 @@
-{ lib, stdenv, fetchurl, unzip }:
-
-stdenv.mkDerivation rec {
-  pname = "crafty";
-  version = "25.0.1";
-
-  src = fetchurl {
-    url = "http://www.craftychess.com/downloads/source/crafty-${version}.zip";
-    sha256 = "0aqgj2q7kdlgbha01qs869cwyja13bc7q2lh4nfhlba2pklknsm8";
-  };
-
-  bookBin = fetchurl {
-    url = "http://www.craftychess.com/downloads/book/book.bin";
-    sha256 = "10rrgkr3hxm7pxdbc2jq8b5g74gfhzk4smahks3k8am1cmyq4p7r";
-  };
-
-  startPgn = fetchurl {
-    url = "http://craftychess.com/downloads/book/start.pgn.gz";
-    sha256 = "12g70mgfifwssfvndzq94pin34dizlixhsga75vgj7dakysi2p7f";
-  };
-
-  nativeBuildInputs = [ unzip ];
-
-  unpackPhase = ''
-    mkdir "craftysrc"
-    unzip $src -d craftysrc
-    gunzip -c $startPgn > "craftysrc/start.pgn"
-  '';
-
-  buildPhase = ''
-    cd craftysrc
-    make unix-gcc
-  '';
-
-  installPhase = ''
-    BUILDDIR="$PWD"
-    mkdir -p $out/bin
-    cp -p ./crafty $out/bin
-
-    mkdir -p $out/share/crafty
-    cd $out/share/crafty
-
-    $out/bin/crafty "books create $BUILDDIR/start.pgn 60"
-    rm -f *.001
-
-    cp -p ${bookBin} $out/share/crafty/book.bin
-
-    mv $out/bin/crafty $out/bin/.crafty-wrapped
-
-    cat - > $out/bin/crafty <<EOF
-    #! ${stdenv.shell}
-    #
-    # The books are copied from share/crafty to ~/.crafty/books the first time
-    # this script is run. You can restore them at any time just copying them
-    # again.
-    if [[ ! -d "\$HOME/.crafty/books" ]]; then
-      mkdir "\$HOME/.crafty/books" -p
-      cp "$out/share/crafty/"book*.bin "\$HOME/.crafty/books"
-      chmod ug+w "\$HOME/.crafty/books/"*
-    fi
-    exec $out/bin/.crafty-wrapped bookpath=\$HOME/.crafty/books "\$@"
-    EOF
-    chmod +x $out/bin/crafty
-  '';
-
-  meta = {
-    homepage = "http://www.craftychess.com/";
-    description = "Chess program developed by Dr. Robert M. Hyatt";
-    license = lib.licenses.unfree;
-    platforms = lib.platforms.unix;
-    maintainers = [ lib.maintainers.jwiegley ];
-  };
-}
diff --git a/pkgs/misc/emulators/bsod/default.nix b/pkgs/misc/emulators/bsod/default.nix
deleted file mode 100644
index 869440856f9a..000000000000
--- a/pkgs/misc/emulators/bsod/default.nix
+++ /dev/null
@@ -1,32 +0,0 @@
-{lib, stdenv, fetchurl, ncurses}:
-
-stdenv.mkDerivation rec {
-  pname = "bsod";
-  version = "0.1";
-
-  src = fetchurl {
-    url = "https://www.vanheusden.com/bsod/bsod-${version}.tgz";
-    sha256 = "0hqwacazyq5rhc04j8w8w0j0dgb6ca8k66c9lxf6bsyi6wvbhvmd";
-  };
-
-  buildInputs = [ ncurses ];
-
-  installPhase = ''
-    mkdir -p $out/bin
-    cp bsod $out/bin
-  '';
-
-  meta = {
-    description = "Blue Screen Of Death emulator for Unix";
-    longDescription = "
-      This program will let you UNIX user experience the authentic
-      microsoft windows experience.  Bsod displays the famous windows xp
-      blue screen of death on the console.  Errors and drivers causing the
-      error are selected randomly from a large set of examples.";
-    homepage = "http://www.vanheusden.com/bsod/";
-    license = lib.licenses.gpl2;
-    platforms = lib.platforms.unix;
-    maintainers = [ lib.maintainers.antono ];
-  };
-
-}
diff --git a/pkgs/os-specific/darwin/chunkwm/default.nix b/pkgs/os-specific/darwin/chunkwm/default.nix
deleted file mode 100644
index c0229ba3ae23..000000000000
--- a/pkgs/os-specific/darwin/chunkwm/default.nix
+++ /dev/null
@@ -1,36 +0,0 @@
-{ lib, stdenv, fetchzip, Carbon, Cocoa, ScriptingBridge }:
-
-stdenv.mkDerivation rec {
-  pname = "chunkwm";
-  version = "0.4.9";
-  src = fetchzip {
-    url = "https://github.com/koekeishiya/chunkwm/archive/v${version}.tar.gz";
-    sha256 = "0w8q92q97fdvbwc3qb5w44jn4vi3m65ssdvjp5hh6b7llr17vspl";
-  };
-
-  buildInputs = [ Carbon Cocoa ScriptingBridge ];
-  outputs = [ "bin" "out" ];
-
-  buildPhase = ''
-    for d in . src/chunkc src/plugins/*; do
-        pushd $d
-        buildPhase
-        popd
-    done
-  '';
-
-  installPhase = ''
-    mkdir -p $bin/bin $out/bin $out/lib/chunkwm/plugins
-    cp src/chunkc/bin/chunkc $bin/bin/chunkc
-    cp bin/chunkwm $out/bin
-    cp plugins/*.so $out/lib/chunkwm/plugins
-  '';
-
-  meta = with lib; {
-    description = "Tiling window manager for macOS based on plugin architecture";
-    homepage = "https://github.com/koekeishiya/chunkwm";
-    platforms = platforms.darwin;
-    maintainers = with maintainers; [ lnl7 ];
-    license = licenses.mit;
-  };
-}
diff --git a/pkgs/os-specific/linux/crda/default.nix b/pkgs/os-specific/linux/crda/default.nix
index d12bba4e1645..ffed5fc36a78 100644
--- a/pkgs/os-specific/linux/crda/default.nix
+++ b/pkgs/os-specific/linux/crda/default.nix
@@ -71,7 +71,7 @@ stdenv.mkDerivation rec {
 
       to the system configuration.
     '';
-    homepage = "http://drvbp1.linux-foundation.org/~mcgrof/rel-html/crda/";
+    homepage = "https://wireless.wiki.kernel.org/en/developers/regulatory/crda";
     license = licenses.free; # "copyleft-next 0.3.0", as yet without a web site
     platforms = platforms.linux;
   };
diff --git a/pkgs/servers/cayley/default.nix b/pkgs/servers/cayley/default.nix
index 13bf9326c22b..97aac4272cea 100644
--- a/pkgs/servers/cayley/default.nix
+++ b/pkgs/servers/cayley/default.nix
@@ -20,7 +20,7 @@ buildGoPackage rec {
   ];
 
   meta = {
-    homepage = "https://cayley.io/";
+    homepage = "https://github.com/cayleygraph/cayley";
     description = "A graph database inspired by Freebase and Knowledge Graph";
     maintainers = with lib.maintainers; [ sigma ];
     license = lib.licenses.asl20;
diff --git a/pkgs/tools/cd-dvd/bashburn/default.nix b/pkgs/tools/cd-dvd/bashburn/default.nix
deleted file mode 100644
index d9664f1072fb..000000000000
--- a/pkgs/tools/cd-dvd/bashburn/default.nix
+++ /dev/null
@@ -1,63 +0,0 @@
-{ lib, stdenv, fetchurl, util-linux
-, cdparanoia, cdrdao, dvdplusrwtools, flac, lame, mpg123, normalize
-, vorbis-tools, xorriso }:
-
-stdenv.mkDerivation rec {
-  pname = "bashburn";
-  version = "3.1.0";
-
-  src = fetchurl {
-    sha256 = "0g5va5rjdrvacanmqr6pbxk2rl565ahkfbsvxsp1jvhvxvhmv3dp";
-    url = "http://bashburn.dose.se/index.php?s=file_download&id=25";
-    name = "${pname}-${version}.tar.gz";
-  };
-
-  nativeBuildInputs = [ util-linux ];
-
-  postPatch = ''
-    for path in \
-      BB_CDBURNCMD=${xorriso}/bin/"xorriso -as cdrecord" \
-      BB_DVDBURNCMD=${dvdplusrwtools}/bin/growisofs \
-      BB_ISOCMD=${xorriso}/bin/"xorriso -as mkisofs" \
-      BB_DVDBLANK=${dvdplusrwtools}/bin/dvd+rw-format \
-      BB_CDIMAGECMD=${cdrdao}/bin/cdrdao \
-      BB_CDAUDIORIP=${cdparanoia}/bin/cdparanoia \
-      BB_READCD=${xorriso}/bin/"xorriso -as mkisofs" \
-      BB_MP3ENC=${lame}/bin/lame \
-      BB_MP3DEC=${mpg123}/bin/mpg123 \
-      BB_OGGENC=${vorbis-tools}/bin/oggenc \
-      BB_OGGDEC=${vorbis-tools}/bin/oggdec \
-      BB_FLACCMD=${flac.bin}/bin/flac \
-      BB_EJECT=${util-linux}/bin/eject \
-      BB_NORMCMD=${normalize}/bin/normalize \
-    ; do
-      echo $path
-      sed -i BashBurn.sh \
-        -e "s,\(''${path%%=*}:\).*,\1 ''${path#*=},"
-      sed -i menus/advanced.sh \
-        -e "s,\(''${path%%=*}|\).*\('.*\),\1''${path#*=}\2,"
-    done
-  '';
-
-  installPhase = ''
-    sh Install.sh --prefix $out
-  '';
-
-  meta = with lib; {
-    description = "Bash script CD Burner Writer";
-    longDescription = ''
-      It might not be the best looking application out there, but it works.
-      It’s simple, fast and small, and can handle most things you throw at it.
-      Currently (and with the right dependencies installed), BashBurn can:
-      - burn data CDs/DVDs (Including CDRWs)
-      - burn music CDs
-      - burn CD/DVD-images
-      - rip data/music CDs
-      - manipulate ISO-files
-      - and probably more...
-    '';
-    homepage = "http://bashburn.dose.se/";
-    license = licenses.gpl2Plus;
-    platforms = platforms.linux;
-  };
-}
diff --git a/pkgs/tools/filesystems/ceph/default.nix b/pkgs/tools/filesystems/ceph/default.nix
index 2c6175bec13e..1162c4e69b12 100644
--- a/pkgs/tools/filesystems/ceph/default.nix
+++ b/pkgs/tools/filesystems/ceph/default.nix
@@ -85,7 +85,7 @@ let
   };
 
   getMeta = description: with lib; {
-     homepage = "https://ceph.io/";
+     homepage = "https://ceph.io/en/";
      inherit description;
      license = with licenses; [ lgpl21 gpl2 bsd3 mit publicDomain ];
      maintainers = with maintainers; [ adev ak johanot krav ];
diff --git a/pkgs/tools/misc/cpuminer-multi/default.nix b/pkgs/tools/misc/cpuminer-multi/default.nix
deleted file mode 100644
index 3fbdcfae0fe4..000000000000
--- a/pkgs/tools/misc/cpuminer-multi/default.nix
+++ /dev/null
@@ -1,30 +0,0 @@
-{ lib, stdenv, fetchFromGitHub, curl, jansson, autoconf, automake
-, aesni ? stdenv.hostPlatform.aesSupport }:
-
-stdenv.mkDerivation {
-  pname = "cpuminer-multi";
-  version = "unstable-2016-03-16";
-
-  src = fetchFromGitHub {
-    owner = "hyc";
-    repo = "cpuminer-multi";
-    rev = "8393e03089c0abde61bd5d72aba8f926c3d6eca4";
-    sha256 = "11dg4rra4dgfb9x6q85irn0hrkx2lkwyrdpgdh10pag09s3vhy4v";
-  };
-
-  buildInputs = [ autoconf automake curl jansson ];
-
-  preConfigure = ''
-    ./autogen.sh
-  '';
-
-  configureFlags = [ (if aesni then "--enable-aes-ni" else "--disable-aes-ni") ];
-
-  meta = with lib; {
-    description = "Multi-algo CPUMiner";
-    homepage = "https://github.com/wolf9466/cpuminer-multi";
-    license = licenses.gpl2;
-    # does not build on i686 https://github.com/lucasjones/cpuminer-multi/issues/27
-    platforms = [ "x86_64-linux" ];
-  };
-}
diff --git a/pkgs/tools/networking/circus/default.nix b/pkgs/tools/networking/circus/default.nix
index f24c0e629cb0..c9aba8dc4e8b 100644
--- a/pkgs/tools/networking/circus/default.nix
+++ b/pkgs/tools/networking/circus/default.nix
@@ -34,7 +34,7 @@ buildPythonApplication rec {
 
   meta = with lib; {
     description = "A process and socket manager";
-    homepage = "https://github.circus.com/circus-tent/circus";
+    homepage = "https://github.com/circus-tent/circus";
     license = licenses.asl20;
   };
 }
diff --git a/pkgs/tools/package-management/bunny/default.nix b/pkgs/tools/package-management/bunny/default.nix
deleted file mode 100644
index 8ef808610db7..000000000000
--- a/pkgs/tools/package-management/bunny/default.nix
+++ /dev/null
@@ -1,25 +0,0 @@
-{ lib, stdenv, fetchFromGitLab }:
-
-stdenv.mkDerivation rec {
-  pname = "bunny";
-  version = "1.3";
-
-  src = fetchFromGitLab {
-    owner = "tim241";
-    repo = "bunny";
-    rev = version;
-    sha256 = "0nh2h5kj9b0nkb6yrzf4if7anfdmy9vijzy4bl3s7qck0nzbpy8s";
-  };
-
-  dontBuild = true;
-
-  makeFlags = [ "prefix=$(out)" ];
-
-  meta = with lib; {
-    description = "A simple shell script wrapper around multiple package managers";
-    homepage = "https://gitlab.com/tim241/bunny";
-    license = licenses.gpl3;
-    platforms = platforms.all;
-    maintainers = with maintainers; [ buffet ];
-  };
-}
diff --git a/pkgs/tools/package-management/cde/default.nix b/pkgs/tools/package-management/cde/default.nix
index f2c308de5a76..acebe4726755 100644
--- a/pkgs/tools/package-management/cde/default.nix
+++ b/pkgs/tools/package-management/cde/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    homepage = "https://pg.ucsd.edu/cde/manual/";
+    homepage = "https://github.com/usnistgov/corr-CDE";
     description = "A packaging tool for building portable packages";
     license = licenses.gpl3Plus;
     maintainers = [ maintainers.rlupton20 ];
diff --git a/pkgs/tools/security/bypass403/default.nix b/pkgs/tools/security/bypass403/default.nix
deleted file mode 100644
index 3d1569cf5577..000000000000
--- a/pkgs/tools/security/bypass403/default.nix
+++ /dev/null
@@ -1,28 +0,0 @@
-{ buildGoModule
-, fetchFromGitHub
-, lib
-}:
-
-buildGoModule rec {
-  pname = "bypass403";
-  version = "1.4.0";
-
-  src = fetchFromGitHub {
-    owner = "drsigned";
-    repo = pname;
-    rev = "v${version}";
-    sha256 = "1x3a4lnxjxbv80kaydy57809n9r7vzci9ki4f98smf3w04s86rcl";
-  };
-
-  vendorSha256 = "1bp6bf99rxlyg91pn1y228q18lawpykmvkl22cydmclms0q0n238";
-
-  meta = with lib; {
-    description = "Tool to bypass 403 Forbidden responses";
-    homepage = "https://github.com/drsigned/bypass403";
-    license = with licenses; [ mit ];
-    maintainers = with maintainers; [ fab ];
-
-    # https://github.com/drsigned/bypass403 no longer exists
-    broken = true;
-  };
-}
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 3517f43fbeee..a3edb07ffbbb 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -61,6 +61,7 @@ mapAliases ({
   ardour_5 = throw "ardour_5 has been removed. see https://github.com/NixOS/nixpkgs/issues/139549"; # added 2021-09-28
   arora = throw "arora has been removed."; # added 2020-09-09
   asciidocFull = asciidoc-full;  # added 2014-06-22
+  asn1c = throw "asn1c has been removed: deleted by upstream"; # added 2022-01-07
   asterisk_15 = throw "asterisk_15: Asterisk 15 is end of life and has been removed."; # added 2020-10-07
   at_spi2_atk = at-spi2-atk; # added 2018-02-25
   at_spi2_core = at-spi2-core; # added 2018-02-25
@@ -70,6 +71,7 @@ mapAliases ({
   azureus = throw "azureus is now known as vuze and the version in nixpkgs was really outdated"; # added 2021-08-02
   badtouch = authoscope; # Project was renamed, added 20210626
   bar-xft = lemonbar-xft;  # added 2015-01-16
+  bashburn = throw "bashburn has been removed: deleted by upstream"; # added 2022-01-07
   bashCompletion = bash-completion; # Added 2016-09-28
   bash_5 = bash; # added 2021-08-20
   bashInteractive_5 = bashInteractive; # added 2021-08-20
@@ -81,6 +83,7 @@ mapAliases ({
   beret = throw "beret has been removed"; # added 2021-11-16
   blastem = throw "blastem has been removed from nixpkgs as it would still require python2."; # added 2022-01-01
   bluezFull = bluez; # Added 2019-12-03
+  bin_replace_string = throw "bin_replace_string has been removed: deleted by upstream"; # added 2022-01-07
   bpftool = bpftools; # Added 2021-05-03
   brackets = throw "brackets has been removed, it was unmaintained and had open vulnerabilities"; # added 2021-01-24
   bridge_utils = bridge-utils;  # added 2015-02-20
@@ -98,12 +101,15 @@ mapAliases ({
   bitwarden_rs-vault = vaultwarden-vault;
 
   bs1770gain = throw "bs1770gain has been removed from nixpkgs, as it had no maintainer or reverse dependencies."; # added 2021-01-02
+  bsod = throw "bsod has been removed: deleted by upstream"; # added 2022-01-07
   btc1 = throw "btc1 has been removed, it was abandoned by upstream"; # added 2020-11-03
   buildPerlPackage = perlPackages.buildPerlPackage; # added 2018-10-12
   buildGo112Package = throw "buildGo112Package has been removed"; # added 2020-04-26
   buildGo112Module = throw "buildGo112Module has been removed"; # added 2020-04-26
   buildkite-agent3 = buildkite-agent; # added 2018-09-26
   bundler_HEAD = bundler; # added 2015-11-15
+  bunny = throw "bunny has been removed: deleted by upstream"; # added 2022-01-07
+  bypass403 = throw "bypass403 has been removed: deleted by upstream"; # added 2022-01-07
   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
   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
@@ -115,6 +121,7 @@ mapAliases ({
   cgmanager = throw "cgmanager was deprecated by lxc and therefore removed from nixpkgs."; # added 2020-06-05
   checkbashism = checkbashisms; # added 2016-08-16
   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
   cide = throw "cide was deprecated on 2019-09-11: abandoned by upstream";
   cinepaint = throw "cinepaint has been removed from nixpkgs, as it was unmaintained"; # added 2019-12-10
   cifs_utils = cifs-utils; # added 2016-08
@@ -148,6 +155,8 @@ mapAliases ({
   couchdb2 = throw "couchdb2 was removed from nixpkgs, use couchdb3 instead"; # added 2021-03-03
   coredumper = throw "coredumper has been removed: abandoned by upstream."; # added 2019-11-16
   cpp_ethereum = throw "cpp_ethereum has been removed; abandoned upstream."; # added 2020-11-30
+  cpuminer-multi = throw "cpuminer-multi has been removed: deleted by upstream"; # added 2022-01-07
+  crafty = throw "crafty has been removed: deleted by upstream"; # 2022-01-07
   cryptol = throw "cryptol was removed due to prolonged broken build"; # added 2020-08-21
   cpp-gsl = microsoft_gsl; # added 2019-05-24
   cudatoolkit_6 = throw "cudatoolkit_6 has been removed in favor of newer versions"; # added 2021-02-14
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 82bd5f88666f..b04f94e9d66d 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -1572,8 +1572,6 @@ with pkgs;
   buildbot-full = with python3Packages; toPythonApplication buildbot-full;
   buildbot-worker = with python3Packages; toPythonApplication buildbot-worker;
 
-  bunny = callPackage ../tools/package-management/bunny { };
-
   bunyan-rs = callPackage ../development/tools/bunyan-rs { };
 
   callaudiod = callPackage ../applications/audio/callaudiod { };
@@ -1953,10 +1951,6 @@ with pkgs;
 
   kwakd = callPackage ../servers/kwakd { };
 
-  chunkwm = callPackage ../os-specific/darwin/chunkwm {
-    inherit (darwin.apple_sdk.frameworks) Carbon Cocoa ScriptingBridge;
-  };
-
   kwm = callPackage ../os-specific/darwin/kwm { };
 
   khd = callPackage ../os-specific/darwin/khd {
@@ -2135,8 +2129,6 @@ with pkgs;
 
   barcode = callPackage ../tools/graphics/barcode {};
 
-  bashburn = callPackage ../tools/cd-dvd/bashburn { };
-
   bashmount = callPackage ../tools/filesystems/bashmount {};
 
   bat = callPackage ../tools/misc/bat {
@@ -2335,8 +2327,6 @@ with pkgs;
   breakpointHook = assert stdenv.isLinux;
     makeSetupHook { } ../build-support/setup-hooks/breakpoint-hook.sh;
 
-  bsod = callPackage ../misc/emulators/bsod { };
-
   py65 = python3Packages.callPackage ../misc/emulators/py65 { };
 
   simh = callPackage ../misc/emulators/simh { };
@@ -2372,8 +2362,6 @@ with pkgs;
     textual-window-manager = tmux;
   };
 
-  bypass403 = callPackage ../tools/security/bypass403 { };
-
   bsh = fetchurl {
     url = "http://www.beanshell.org/bsh-2.0b5.jar";
     sha256 = "0p2sxrpzd0vsk11zf3kb5h12yl1nq4yypb5mpjrm8ww0cfaijck2";
@@ -4183,8 +4171,6 @@ with pkgs;
 
   cpuminer = callPackage ../tools/misc/cpuminer { };
 
-  cpuminer-multi = callPackage ../tools/misc/cpuminer-multi { };
-
   crabz = callPackage ../tools/compression/crabz {
     inherit (darwin.apple_sdk.frameworks) CoreFoundation Security;
   };
@@ -11598,8 +11584,6 @@ with pkgs;
     tex = texlive.combined.scheme-medium;
   };
 
-  asn1c = callPackage ../development/compilers/asn1c { };
-
   aspectj = callPackage ../development/compilers/aspectj { };
 
   atasm = callPackage ../development/compilers/atasm { };
@@ -14237,8 +14221,6 @@ with pkgs;
         stdenv;
   };
 
-  bin_replace_string = callPackage ../development/tools/misc/bin_replace_string { };
-
   bingrep = callPackage ../development/tools/analysis/bingrep { };
 
   binutils-unwrapped = callPackage ../development/tools/misc/binutils {
@@ -30360,8 +30342,6 @@ with pkgs;
 
   crack_attack = callPackage ../games/crack-attack { };
 
-  crafty = callPackage ../games/crafty { };
-
   crawlTiles = callPackage ../games/crawl {
     tileMode = true;
   };