diff --git a/lib/systems/platforms.nix b/lib/systems/platforms.nix
index d65ff6487b7a..72535372fc2b 100644
--- a/lib/systems/platforms.nix
+++ b/lib/systems/platforms.nix
@@ -3,7 +3,7 @@
 # targetPlatform, etc) containing at least the minimal set of attrs
 # required (see types.parsedPlatform in lib/systems/parse.nix).  This
 # file takes an already-valid platform and further elaborates it with
-# optional fields such as linux-kernel, gcc, etc.
+# optional fields; currently these are: linux-kernel, gcc, and rustc.
 
 { lib }:
 rec {
@@ -568,5 +568,5 @@ rec {
 
     else if platform.parsed.cpu == lib.systems.parse.cpuTypes.powerpc64le then powernv
 
-    else pc;
+    else { };
 }
diff --git a/nixos/modules/programs/thefuck.nix b/nixos/modules/programs/thefuck.nix
index b909916158d3..18d09e26866c 100644
--- a/nixos/modules/programs/thefuck.nix
+++ b/nixos/modules/programs/thefuck.nix
@@ -6,9 +6,12 @@ let
   prg = config.programs;
   cfg = prg.thefuck;
 
-  initScript = ''
+  bashAndZshInitScript = ''
     eval $(${pkgs.thefuck}/bin/thefuck --alias ${cfg.alias})
   '';
+  fishInitScript = ''
+    ${pkgs.thefuck}/bin/thefuck --alias ${cfg.alias} | source
+  '';
 in
   {
     options = {
@@ -30,10 +33,8 @@ in
     config = mkIf cfg.enable {
       environment.systemPackages = with pkgs; [ thefuck ];
 
-      programs.bash.interactiveShellInit = initScript;
-      programs.zsh.interactiveShellInit = mkIf prg.zsh.enable initScript;
-      programs.fish.interactiveShellInit = mkIf prg.fish.enable ''
-        ${pkgs.thefuck}/bin/thefuck --alias | source
-      '';
+      programs.bash.interactiveShellInit = bashAndZshInitScript;
+      programs.zsh.interactiveShellInit = mkIf prg.zsh.enable bashAndZshInitScript;
+      programs.fish.interactiveShellInit = mkIf prg.fish.enable fishInitScript;
     };
   }
diff --git a/pkgs/applications/misc/opencpn/default.nix b/pkgs/applications/misc/opencpn/default.nix
index 522c5739a882..1e726f81bfb1 100644
--- a/pkgs/applications/misc/opencpn/default.nix
+++ b/pkgs/applications/misc/opencpn/default.nix
@@ -1,31 +1,100 @@
-{ lib, stdenv, fetchFromGitHub, pkg-config, cmake, gtk2, wxGTK30, libpulseaudio, curl,
-  gettext, glib, portaudio }:
+{ stdenv, lib
+, alsa-utils
+, at-spi2-core
+, cmake
+, curl
+, dbus
+, epoxy
+, fetchFromGitHub
+, flac
+, gtk3
+, jasper
+, libGLU
+, libarchive
+, libdatrie
+, libelf
+, libexif
+, libogg
+, libopus
+, libselinux
+, libsepol
+, libsndfile
+, libthai
+, libunarr
+, libusb
+, libvorbis
+, libxkbcommon
+, lsb-release
+, lz4
+, pcre
+, pkg-config
+, portaudio
+, sqlite
+, tinyxml
+, udev
+, util-linux
+, wxGTK31-gtk3
+, xorg
+}:
 
 stdenv.mkDerivation rec {
-  pname = "opencpn-unstable";
-  version = "2019-11-21";
+  pname = "opencpn";
+  version = "5.6.2";
 
   src = fetchFromGitHub {
     owner = "OpenCPN";
     repo = "OpenCPN";
-    rev = "e73dc935545b2bbcf193cc61d987a0178c52d7a7";
-    sha256 = "0yiqahkzwcbzgabc5xgxmwlngapkfiaqyva3mwz29xj0c5lg2bdk";
+    rev = "Release_${version}";
+    hash = "sha256-sNZYf/2gtjRrrGPuazVnKTgcuIQpKPazhexqlK21T4g=";
   };
 
-  nativeBuildInputs = [ cmake pkg-config ];
-  buildInputs = [ gtk2 wxGTK30 libpulseaudio curl gettext
-                  glib portaudio ];
-
-  cmakeFlags = [
-    "-DGTK2_GDKCONFIG_INCLUDE_DIR=${gtk2.out}/lib/gtk-2.0/include"
-    "-DGTK2_GLIBCONFIG_INCLUDE_DIR=${glib.out}/lib/glib-2.0/include"
+  nativeBuildInputs = [ cmake lsb-release pkg-config ];
+  buildInputs = [
+    alsa-utils
+    at-spi2-core
+    curl
+    dbus
+    epoxy
+    flac
+    gtk3
+    jasper
+    libGLU
+    libarchive
+    libdatrie
+    libelf
+    libexif
+    libogg
+    libopus
+    libselinux
+    libsepol
+    libsndfile
+    libthai
+    libunarr
+    libusb
+    libvorbis
+    libxkbcommon
+    lz4
+    pcre
+    portaudio
+    sqlite
+    tinyxml
+    udev
+    util-linux
+    wxGTK31-gtk3
+    xorg.libXdmcp
+    xorg.libXtst
   ];
 
-  meta = {
+
+  cmakeFlags = [ "-DOCPN_BUNDLE_DOCS=true" ];
+
+  doCheck = true;
+
+  meta = with lib; {
     description = "A concise ChartPlotter/Navigator";
-    maintainers = [ lib.maintainers.kragniz ];
+    maintainers = with maintainers; [ kragniz lovesegfault ];
     platforms = [ "x86_64-linux" ];
-    license = lib.licenses.gpl2;
+    license = licenses.gpl2;
     homepage = "https://opencpn.org/";
   };
 }
diff --git a/pkgs/applications/networking/browsers/firefox-bin/devedition_sources.nix b/pkgs/applications/networking/browsers/firefox-bin/devedition_sources.nix
index a294a8708059..f05ccab2975d 100644
--- a/pkgs/applications/networking/browsers/firefox-bin/devedition_sources.nix
+++ b/pkgs/applications/networking/browsers/firefox-bin/devedition_sources.nix
@@ -1,985 +1,985 @@
 {
-  version = "100.0b6";
+  version = "101.0b2";
   sources = [
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-x86_64/ach/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-x86_64/ach/firefox-101.0b2.tar.bz2";
       locale = "ach";
       arch = "linux-x86_64";
-      sha256 = "6b5ac2e733e44616405f31b16bc995f945740477d00988ce5dd4f16c4ec74085";
+      sha256 = "84d818f3e3533fa8d0f92c00d654023c036238db4a9a9048a0d71c0b60017eb6";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-x86_64/af/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-x86_64/af/firefox-101.0b2.tar.bz2";
       locale = "af";
       arch = "linux-x86_64";
-      sha256 = "5b25ad2870b33002060f493368f79921046f5b19e4adf0c5e1836b7d00347790";
+      sha256 = "1d60a63bdf28d4e0ad1ffe1459cd949704bed08864d0a1118032acb6f9e9cd82";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-x86_64/an/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-x86_64/an/firefox-101.0b2.tar.bz2";
       locale = "an";
       arch = "linux-x86_64";
-      sha256 = "9fc4a88d9216ba0b5979e939092314f135da9e33a3d8df7cadcf142f19b0b71f";
+      sha256 = "b779cd24703b623d06cf69b60c92e244ed6f8c0df5f30ccf8c3d5d9d08841af1";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-x86_64/ar/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-x86_64/ar/firefox-101.0b2.tar.bz2";
       locale = "ar";
       arch = "linux-x86_64";
-      sha256 = "23f33752d3df64ee98cdbdc569b8cb4cea2dbbae71810a3a14a82a6361f97b9e";
+      sha256 = "b8121d4f1a9b04814933df8e15c7e7c01ed24aba78ce1f43d29ec0130aeb7d50";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-x86_64/ast/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-x86_64/ast/firefox-101.0b2.tar.bz2";
       locale = "ast";
       arch = "linux-x86_64";
-      sha256 = "a5d357ed9b58fe0a2b7c95e24cb18659c7aee29cb1cda0071b7afdee9c3ac9eb";
+      sha256 = "cffaf3288650509a3d25988ba32bcb0e7af0bd787b7b5ea297490f236ee91d5e";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-x86_64/az/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-x86_64/az/firefox-101.0b2.tar.bz2";
       locale = "az";
       arch = "linux-x86_64";
-      sha256 = "1191a7c0a3222d55a605bbb5f25d064414d08b9bfb6dc6ad74dd1de357177701";
+      sha256 = "c9e62710701996c4d556320583209402dc955296117e8d70a6ead33472e07d0c";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-x86_64/be/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-x86_64/be/firefox-101.0b2.tar.bz2";
       locale = "be";
       arch = "linux-x86_64";
-      sha256 = "69445ca3cf31d63162ddd0aab1538655a08e325aad57a3d343ac310193a942a3";
+      sha256 = "4bb469f3523bdff58e83d9de56a80f1d9396df2fae2c048ea91cefa14d89def2";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-x86_64/bg/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-x86_64/bg/firefox-101.0b2.tar.bz2";
       locale = "bg";
       arch = "linux-x86_64";
-      sha256 = "f2ff0a6bf22b9ed16b0656d4e0848c509cee2de9a638d556500909e1352ae5b3";
+      sha256 = "bbe96de47df523971ad2f7e72b4c5ef040b94dcf3d88dcded6a3808098aeb1c2";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-x86_64/bn/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-x86_64/bn/firefox-101.0b2.tar.bz2";
       locale = "bn";
       arch = "linux-x86_64";
-      sha256 = "1fbfdb8d6f22567eb1112c63ab6192cb439b9d2cd5e57c10401c76f9f9cd215b";
+      sha256 = "0973eae62bf490af5bdf71d5e33dffe291809a2c4389fb8c9cdf33670ab497cb";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-x86_64/br/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-x86_64/br/firefox-101.0b2.tar.bz2";
       locale = "br";
       arch = "linux-x86_64";
-      sha256 = "e05895d70c72aadcb77dc6d84a6a054a8410b29e05d5da6eeac0fdee1b66b130";
+      sha256 = "f693b340a2d7ac5bf40705b51333bf7bc22e9a62a9dd14952e6835a8d5374267";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-x86_64/bs/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-x86_64/bs/firefox-101.0b2.tar.bz2";
       locale = "bs";
       arch = "linux-x86_64";
-      sha256 = "ba125689cbd845e9bf8df940bbfd0796326939ba9b45d4bc0c0a8ddf64dd6f61";
+      sha256 = "de631ff909d671164e52e7194c1f5f5ac6156ef66877f4642c5f067e806281b3";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-x86_64/ca-valencia/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-x86_64/ca-valencia/firefox-101.0b2.tar.bz2";
       locale = "ca-valencia";
       arch = "linux-x86_64";
-      sha256 = "37a5ba26d10cbc2aa8222a2f19133a12710adeb389234ff53a91b43ddd5e901a";
+      sha256 = "eb73e92b05b37a7aa042b8b865a630a95fdeed41e9881f659a3589c2dcf3fd99";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-x86_64/ca/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-x86_64/ca/firefox-101.0b2.tar.bz2";
       locale = "ca";
       arch = "linux-x86_64";
-      sha256 = "5f11f3a11b93f06235981200b690cb9aaf95ed8d459ea8e1d6ac7c6a73d9d9e4";
+      sha256 = "d227042106358cfc9025f3bdc84e12494550e29ba4a8a622fa6c1b88a6cfe7cc";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-x86_64/cak/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-x86_64/cak/firefox-101.0b2.tar.bz2";
       locale = "cak";
       arch = "linux-x86_64";
-      sha256 = "1d4a103b8c2c601b908a635d2b5edaec068c1a2e644e1924022a94e57e1b2f6a";
+      sha256 = "6831c152ec2fcab6fe7e6792887c7b813c2e226836135acbfc4ca66a9b114014";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-x86_64/cs/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-x86_64/cs/firefox-101.0b2.tar.bz2";
       locale = "cs";
       arch = "linux-x86_64";
-      sha256 = "358b2c3c3c5a9945b35f1c71eadaf7d5305d214ecfe37fda811fd37d326dfd35";
+      sha256 = "c7c52ee04dbc90417e6c6d35cefe315daffddb6b13b7a239254bc15cb22f197c";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-x86_64/cy/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-x86_64/cy/firefox-101.0b2.tar.bz2";
       locale = "cy";
       arch = "linux-x86_64";
-      sha256 = "bcbab842e30d22f7d646d2494451e0e676c40c16c1e3532b4c6cd6eb501fb7c2";
+      sha256 = "e6315de3fc02ab229e1e8422f614ceb0ac4ee1aa913492a24f200dd922dfb2ae";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-x86_64/da/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-x86_64/da/firefox-101.0b2.tar.bz2";
       locale = "da";
       arch = "linux-x86_64";
-      sha256 = "3b462ea57616171ebe43e218d7fbcc8c45d508fa2b91490d5b107842bf936d25";
+      sha256 = "1dbcc3ad30cae0c8e5cd29dc480373fe80989d8636d42e45698b8f7a76bb7781";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-x86_64/de/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-x86_64/de/firefox-101.0b2.tar.bz2";
       locale = "de";
       arch = "linux-x86_64";
-      sha256 = "067a586989c84a280366c6021daf270652d443465b63d03e0fb9ff02eeb3f3ee";
+      sha256 = "43189166f2f1e7a3366922270b62e95027f2d750206bd1878b764a5a7572d360";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-x86_64/dsb/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-x86_64/dsb/firefox-101.0b2.tar.bz2";
       locale = "dsb";
       arch = "linux-x86_64";
-      sha256 = "42621cd070dc172b08bdce256c91d6faeede97b116b353f1edf2354c0e37ec3a";
+      sha256 = "2016ca15c4ef78eb8c698646cf6a7ca605f2316cde2df5e1648510c117fa32dc";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-x86_64/el/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-x86_64/el/firefox-101.0b2.tar.bz2";
       locale = "el";
       arch = "linux-x86_64";
-      sha256 = "f079ccc06590277ccf09d4e34b73d3b363d79651d6e2a07d7e127a42ab552bac";
+      sha256 = "7aa33608bd1e9ce1bf3a7b1943644873a7e3d91a5bbc72ac03be5fa1bc4ec8aa";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-x86_64/en-CA/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-x86_64/en-CA/firefox-101.0b2.tar.bz2";
       locale = "en-CA";
       arch = "linux-x86_64";
-      sha256 = "e3f239da659c77662a10ba061f806d615f9a57fe89d1207ac04cacc603a9a587";
+      sha256 = "e31cc0e5dd155c22b1b3a6219b154544b729e700496e8d8f83a895174e6ecb7e";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-x86_64/en-GB/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-x86_64/en-GB/firefox-101.0b2.tar.bz2";
       locale = "en-GB";
       arch = "linux-x86_64";
-      sha256 = "e41640386bbceef99290458576da3272ea400e78641cbae73ece0e07045396ab";
+      sha256 = "7521c0e6c083d26d1f5a67f695354e64947ec3335d07991e97429e569aa17e23";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-x86_64/en-US/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-x86_64/en-US/firefox-101.0b2.tar.bz2";
       locale = "en-US";
       arch = "linux-x86_64";
-      sha256 = "7f5888e7c0480f4f1626943f1878945166179ab94d995e23d0b8f5eb9d83ab4e";
+      sha256 = "e1ad655ed971655a6b56446b5e09fb7f0415c8ff09370ad8fccf7f28dbbd17b0";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-x86_64/eo/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-x86_64/eo/firefox-101.0b2.tar.bz2";
       locale = "eo";
       arch = "linux-x86_64";
-      sha256 = "6c07749b176c7c533a824357da81a42ef10fc78f09b58e7a090d3e36fd77a6d5";
+      sha256 = "9afae49a33f2a0aa02a346fe6e456d09dbe88a0c655a015be5e50a307c472d95";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-x86_64/es-AR/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-x86_64/es-AR/firefox-101.0b2.tar.bz2";
       locale = "es-AR";
       arch = "linux-x86_64";
-      sha256 = "2d23cfea40e6948fd330b2e72f40edab597e5261fb9abcbd539d0b9f513fd946";
+      sha256 = "f8919da0647b6e6a6587f4856ce20be5f6054f4e5b6d71562fbffbac594853cf";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-x86_64/es-CL/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-x86_64/es-CL/firefox-101.0b2.tar.bz2";
       locale = "es-CL";
       arch = "linux-x86_64";
-      sha256 = "eef75de09e6fa7d21ca4aa799ea4b279dcdeefa79d9b4ef7f3b5266c90c2a8ff";
+      sha256 = "b31b8a41ac391aefff8c1d85a29ab129983bd39474a15672cb3e74d916e0c9eb";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-x86_64/es-ES/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-x86_64/es-ES/firefox-101.0b2.tar.bz2";
       locale = "es-ES";
       arch = "linux-x86_64";
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     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-i686/rm/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-i686/rm/firefox-101.0b2.tar.bz2";
       locale = "rm";
       arch = "linux-i686";
-      sha256 = "5599c540c50162d1a79ea16196bb15fda9fed825508b60b4961d91255709593d";
+      sha256 = "a7cdb00dddcee0ce416c36c160ce9ab5fedc6de4ad3caaa4c8b14f9a6e1ea05c";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-i686/ro/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-i686/ro/firefox-101.0b2.tar.bz2";
       locale = "ro";
       arch = "linux-i686";
-      sha256 = "771be3da68642a15baa1e054bf23e9df272d0b0ab46f1e42c6fdf35e85035b9f";
+      sha256 = "eb360965ed5379374b31030b0db3a66e6637687c2b1ee6dcc893c0308bf5ee41";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-i686/ru/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-i686/ru/firefox-101.0b2.tar.bz2";
       locale = "ru";
       arch = "linux-i686";
-      sha256 = "bcca4b9aace48ed4da4c881ed47b0bbc3d20fddd07273ecf1c84758633f350b4";
+      sha256 = "7da4c79b922a9e03c0ba677ae01271f10c0408ed0125d6c020182572bc6989d5";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-i686/sco/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-i686/sco/firefox-101.0b2.tar.bz2";
       locale = "sco";
       arch = "linux-i686";
-      sha256 = "1ca439331c6437dee10d1f2cd72907499894bd98af036dbedc964248217ff510";
+      sha256 = "af1717f13e40806345ca2042fdcaa5105cbf23845ce63f1e89cbf43e57cf8edd";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-i686/si/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-i686/si/firefox-101.0b2.tar.bz2";
       locale = "si";
       arch = "linux-i686";
-      sha256 = "b643cfd20a0bc56b1989dc1c4dc96535d6585a53bb5d13c85ca53bb1027e1732";
+      sha256 = "673f9978ea53996d6021990373484eede873a13e75bd32caab8d9c8a915e046d";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-i686/sk/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-i686/sk/firefox-101.0b2.tar.bz2";
       locale = "sk";
       arch = "linux-i686";
-      sha256 = "5aa1dc132c3d2a42b6086cf824c8b6ae7a30d8b55341a05acfc3eaaa8dd4cad0";
+      sha256 = "db60bfe2a7cb89acc6250304c36c4e665de6c27f788dbb133a68989998e87c27";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-i686/sl/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-i686/sl/firefox-101.0b2.tar.bz2";
       locale = "sl";
       arch = "linux-i686";
-      sha256 = "92b2a15a04c4cee559e0a6565509a546ac7a2c4e3fadbba0c6197356e99f71f9";
+      sha256 = "22faba05601722a2e01e93bee941dc8065f35bf235037b5ec2259bcbd6c3c229";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-i686/son/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-i686/son/firefox-101.0b2.tar.bz2";
       locale = "son";
       arch = "linux-i686";
-      sha256 = "8a25e8af341178bbbcc0731788b1116ab64fbb55480836b94ad6e7830b6b5f16";
+      sha256 = "b6d6278671e2c7204b5ca7c357390c0abb8ac3fde1ec3f504c808455db990fb0";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-i686/sq/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-i686/sq/firefox-101.0b2.tar.bz2";
       locale = "sq";
       arch = "linux-i686";
-      sha256 = "66b7ea3b488b980c425576fdad6009d2c246bdb4686b24b519604a54dba6f756";
+      sha256 = "5571154a698ee65c6f10cebd318b425b265b36c20b6deac8a6a1fb8699aedee1";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-i686/sr/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-i686/sr/firefox-101.0b2.tar.bz2";
       locale = "sr";
       arch = "linux-i686";
-      sha256 = "1aecc3a24dab4a843a967b8c023bbe01488dc113e451cfd7d39e7c2caac1c153";
+      sha256 = "130bb0c0fcad5bb8c7f54bf274a6d4dcb69bd4dc622fda9c32361a2859166231";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-i686/sv-SE/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-i686/sv-SE/firefox-101.0b2.tar.bz2";
       locale = "sv-SE";
       arch = "linux-i686";
-      sha256 = "d5189ed627ac49286cec9733c8658c271ee99930f2d07754993e776a58eacfa0";
+      sha256 = "02199add3347abd89f5ec93f759cf12fd353b63fd4a2f91ee6b3f094f5512a49";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-i686/szl/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-i686/szl/firefox-101.0b2.tar.bz2";
       locale = "szl";
       arch = "linux-i686";
-      sha256 = "45c48d7381499d5aeca0fe340ecc8af33016821fa8f081f6c52c878a9af3640f";
+      sha256 = "c1a99c03d63bea1b1130a02d30c051778648c73f18f38b294c53be83f7f978dd";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-i686/ta/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-i686/ta/firefox-101.0b2.tar.bz2";
       locale = "ta";
       arch = "linux-i686";
-      sha256 = "1a8a9fe5eb0e9e8d213d667cc1aa478f9f381d5a444f8d2be518fb04926e4f64";
+      sha256 = "c01c7a1f56317f2d415bd777e5434366b0b3b2f4ff3a599a25011ef8b90420c4";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-i686/te/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-i686/te/firefox-101.0b2.tar.bz2";
       locale = "te";
       arch = "linux-i686";
-      sha256 = "1f3aa559af38662aea444f52974c2843ffede5505e71e83d73e331d2c4b92275";
+      sha256 = "fcda6af3a7611243dac789fec6bf78a8517389ba3df5ccbb50157969281aa8fd";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-i686/th/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-i686/th/firefox-101.0b2.tar.bz2";
       locale = "th";
       arch = "linux-i686";
-      sha256 = "05bbf88a5b9e914d86244555d06d560b328e8e873e380e67d40edb6d3971d383";
+      sha256 = "2d38c379f9d8aa9e7b7367eeccdf656cc9374858e5bd0cecc19eddd6b1a51cad";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-i686/tl/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-i686/tl/firefox-101.0b2.tar.bz2";
       locale = "tl";
       arch = "linux-i686";
-      sha256 = "8cd7f71325ce2a54403032bc80fe366acfd7a8ce3e3871ae1a8f4e0b5315ddf9";
+      sha256 = "18e0bc9c89a0e89151b1edfe498760fecdb66b369e49ca4fa7ef3d5fdb0c4151";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-i686/tr/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-i686/tr/firefox-101.0b2.tar.bz2";
       locale = "tr";
       arch = "linux-i686";
-      sha256 = "41275c3dcfc9624390a2d3ce9d0aa0e746c4e3122f433924227299d46ff8ab42";
+      sha256 = "bde092819c9f0771bb463df750fb35eb422862a7e28a308209953461be9c9d9e";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-i686/trs/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-i686/trs/firefox-101.0b2.tar.bz2";
       locale = "trs";
       arch = "linux-i686";
-      sha256 = "c04aafe011c8626d749990e0ba293a22c8a623c6eab9bc4bff2782708832a648";
+      sha256 = "fca0c955097a04619e834f7bbce4d8bd7f65283dc0dc9bcb07cea7b4d31aa526";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-i686/uk/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-i686/uk/firefox-101.0b2.tar.bz2";
       locale = "uk";
       arch = "linux-i686";
-      sha256 = "965f445606d8c81d1745a7028ffd15af7cb9bf2473bfba5e673e3621afeaa6e2";
+      sha256 = "31c97b928c9a5e7e80ffdcbec67485702de9fb82acc4f0a7cfc7195e8d214d75";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-i686/ur/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-i686/ur/firefox-101.0b2.tar.bz2";
       locale = "ur";
       arch = "linux-i686";
-      sha256 = "8955e64902aca993d110401fe36b56c84b53a414b2da569525653ee28801d9ca";
+      sha256 = "ec9dc26f00786e8dd084d08e7e9c5612e42ada7e5381e889d940915c9360c837";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-i686/uz/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-i686/uz/firefox-101.0b2.tar.bz2";
       locale = "uz";
       arch = "linux-i686";
-      sha256 = "e05ef7856c3c4777da187ed7212ebab01900881702d1fa8e221a86c57c6ef4f9";
+      sha256 = "9d4de951bfd5d1cf65718f0118807596ce48b2a6a4ce8d29c8ff3c963e39907d";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-i686/vi/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-i686/vi/firefox-101.0b2.tar.bz2";
       locale = "vi";
       arch = "linux-i686";
-      sha256 = "baca088760ee065eb8ad86d93c6b0325d23f88d18359693ba9c2a3971e9e5061";
+      sha256 = "12726a8b22fdfe5d3e9637d665d7d4583e8762362032688367d3a8a5b96665a4";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-i686/xh/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-i686/xh/firefox-101.0b2.tar.bz2";
       locale = "xh";
       arch = "linux-i686";
-      sha256 = "c679216fca120982454a15087890fda40d21bb269a940d96dbe37428672db65f";
+      sha256 = "64ee875cda3543a780a6da399ea7750027e85e4abe62d3eef4e4b21f3b0daa77";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-i686/zh-CN/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-i686/zh-CN/firefox-101.0b2.tar.bz2";
       locale = "zh-CN";
       arch = "linux-i686";
-      sha256 = "ba77a6dc02a406174a79a99b510c2cf7f8be6f877acc57822ee174cc5a99931d";
+      sha256 = "694bc6bfb4a8ac1bd95f756278fb68514a69e58c17e1a6576aa2574cdafbacd6";
     }
-    { url = "http://archive.mozilla.org/pub/devedition/releases/100.0b6/linux-i686/zh-TW/firefox-100.0b6.tar.bz2";
+    { url = "http://archive.mozilla.org/pub/devedition/releases/101.0b2/linux-i686/zh-TW/firefox-101.0b2.tar.bz2";
       locale = "zh-TW";
       arch = "linux-i686";
-      sha256 = "108fbd9c48b974cfd533c514d8459990b5d278ac5381ba5cfb8fad8d885dcfac";
+      sha256 = "1a7fb5edb2ce72fb7e2b62f2e6e48f56d44522ef7f11af208b8a2a52e945bd98";
     }
     ];
 }
diff --git a/pkgs/development/compilers/chicken/5/eggs.nix b/pkgs/development/compilers/chicken/5/eggs.nix
index c74afe187371..83bfc1cbb718 100644
--- a/pkgs/development/compilers/chicken/5/eggs.nix
+++ b/pkgs/development/compilers/chicken/5/eggs.nix
@@ -2,6 +2,38 @@
 rec {
   inherit (pkgs) eggDerivation fetchegg;
 
+  address-info = eggDerivation {
+    name = "address-info-1.0.5";
+
+    src = fetchegg {
+      name = "address-info";
+      version = "1.0.5";
+      sha256 = "1nv87ghfv8szmi2l0rybrgrds6fs5w6jxafqslnzw0mw5sfj6jyk";
+    };
+
+    buildInputs = [
+      srfi-1
+    ];
+  };
+
+  apropos = eggDerivation {
+    name = "apropos-3.6.0";
+
+    src = fetchegg {
+      name = "apropos";
+      version = "3.6.0";
+      sha256 = "0jq5d4zijbf5dw2vsfn89smp7zjpgp82y5hs10xkysf831x7l551";
+    };
+
+    buildInputs = [
+      srfi-1
+      srfi-13
+      check-errors
+      string-utils
+      symbol-utils
+    ];
+  };
+
   args = eggDerivation {
     name = "args-1.6.0";
 
@@ -18,6 +50,125 @@ rec {
     ];
   };
 
+  base64 = eggDerivation {
+    name = "base64-1.0";
+
+    src = fetchegg {
+      name = "base64";
+      version = "1.0";
+      sha256 = "01lid9wxf94nr7gmskamxlfngack1hyxig8rl9swwgnbmz9qgysi";
+    };
+
+    buildInputs = [
+      srfi-13
+    ];
+  };
+
+  check-errors = eggDerivation {
+    name = "check-errors-3.2.0";
+
+    src = fetchegg {
+      name = "check-errors";
+      version = "3.2.0";
+      sha256 = "0d0hpq1nmwyvbg162bqzgk62f70rin0pxsr5a3pgx6xin5i3ngah";
+    };
+
+    buildInputs = [
+      
+    ];
+  };
+
+  defstruct = eggDerivation {
+    name = "defstruct-2.0";
+
+    src = fetchegg {
+      name = "defstruct";
+      version = "2.0";
+      sha256 = "0q1v1gdwqlpmwcsa4jnqldfqky9k7kvb83qgkhdyqym52bm5aln8";
+    };
+
+    buildInputs = [
+      srfi-1
+    ];
+  };
+
+  feature-test = eggDerivation {
+    name = "feature-test-0.2.0";
+
+    src = fetchegg {
+      name = "feature-test";
+      version = "0.2.0";
+      sha256 = "1dxdisv64d8alg6r45cwxf5gmdpcvql1hvlq808lgwphd7kvfpgr";
+    };
+
+    buildInputs = [
+      
+    ];
+  };
+
+  foreigners = eggDerivation {
+    name = "foreigners-1.5";
+
+    src = fetchegg {
+      name = "foreigners";
+      version = "1.5";
+      sha256 = "1mm91y61nlawgb7iqdrkz2fi9sc3fic07f5m1ig541b2hbscfiqy";
+    };
+
+    buildInputs = [
+      matchable
+    ];
+  };
+
+  intarweb = eggDerivation {
+    name = "intarweb-2.0.1";
+
+    src = fetchegg {
+      name = "intarweb";
+      version = "2.0.1";
+      sha256 = "0md226jikqhj993cw17588ipmnz0v7l34zrvylamyrs6zbvj3scm";
+    };
+
+    buildInputs = [
+      srfi-1
+      srfi-13
+      srfi-14
+      defstruct
+      uri-common
+      base64
+    ];
+  };
+
+  iset = eggDerivation {
+    name = "iset-2.2";
+
+    src = fetchegg {
+      name = "iset";
+      version = "2.2";
+      sha256 = "0yfkcd07cw6xnnqfbbvjy81x0vc54k40vdjp2m7gwxx64is6m3rz";
+    };
+
+    buildInputs = [
+      
+    ];
+  };
+
+  json = eggDerivation {
+    name = "json-1.6";
+
+    src = fetchegg {
+      name = "json";
+      version = "1.6";
+      sha256 = "0sb8285dqrm27c8zaqfzc0gixvfmvf0cq2nbza8c4z7j5snxzs2w";
+    };
+
+    buildInputs = [
+      packrat
+      srfi-1
+      srfi-69
+    ];
+  };
+
   matchable = eggDerivation {
     name = "matchable-1.1";
 
@@ -48,6 +199,142 @@ rec {
     ];
   };
 
+  memory-mapped-files = eggDerivation {
+    name = "memory-mapped-files-0.4";
+
+    src = fetchegg {
+      name = "memory-mapped-files";
+      version = "0.4";
+      sha256 = "0by3r18bj9fs0bs9w5czx84vssmr58br3x7pz1m3myb4mns3mpsc";
+    };
+
+    buildInputs = [
+      
+    ];
+  };
+
+  message-digest-primitive = eggDerivation {
+    name = "message-digest-primitive-4.3.2";
+
+    src = fetchegg {
+      name = "message-digest-primitive";
+      version = "4.3.2";
+      sha256 = "1wfmyyp1fv0sz70m0rgzbhkiqgzjc15ppz7fwmpnxg12rvfzdvq0";
+    };
+
+    buildInputs = [
+      check-errors
+    ];
+  };
+
+  miscmacros = eggDerivation {
+    name = "miscmacros-1.0";
+
+    src = fetchegg {
+      name = "miscmacros";
+      version = "1.0";
+      sha256 = "0n2ia4ib4f18hcbkm5byph07ncyx61pcpfp2qr5zijf8ykp8nbvr";
+    };
+
+    buildInputs = [
+      
+    ];
+  };
+
+  packrat = eggDerivation {
+    name = "packrat-1.5";
+
+    src = fetchegg {
+      name = "packrat";
+      version = "1.5";
+      sha256 = "0hfnh57a8yga3byrk8522al5wdj7dyz48lixvvcgnsn3vdy333hq";
+    };
+
+    buildInputs = [
+      srfi-1
+    ];
+  };
+
+  regex = eggDerivation {
+    name = "regex-2.0";
+
+    src = fetchegg {
+      name = "regex";
+      version = "2.0";
+      sha256 = "0qgqrrdr95yqggw8xyvb693nhizwqvf1fp9cjx9p3z80c4ih8j4j";
+    };
+
+    buildInputs = [
+      
+    ];
+  };
+
+  sendfile = eggDerivation {
+    name = "sendfile-1.8.3";
+
+    src = fetchegg {
+      name = "sendfile";
+      version = "1.8.3";
+      sha256 = "0acmydjxlrbq7bdspmrzv9q9l3gh4xxnbpi5g1d5mz1g2mjwgm63";
+    };
+
+    buildInputs = [
+      memory-mapped-files
+    ];
+  };
+
+  sha2 = eggDerivation {
+    name = "sha2-4.0.5";
+
+    src = fetchegg {
+      name = "sha2";
+      version = "4.0.5";
+      sha256 = "020yc41gkpg2s48v5n1nnq02dii340yly2y1zsi71bbfbkai2vcs";
+    };
+
+    buildInputs = [
+      message-digest-primitive
+    ];
+  };
+
+  socket = eggDerivation {
+    name = "socket-0.3.3";
+
+    src = fetchegg {
+      name = "socket";
+      version = "0.3.3";
+      sha256 = "04wfxrwjizvf1jdpfqp3r7381rp9lscrm3z21ihq2dc2lfzjgrxw";
+    };
+
+    buildInputs = [
+      srfi-13
+      srfi-18
+      foreigners
+      feature-test
+    ];
+  };
+
+  spiffy = eggDerivation {
+    name = "spiffy-6.3";
+
+    src = fetchegg {
+      name = "spiffy";
+      version = "6.3";
+      sha256 = "0f22gfdyysgbm3q6cjibn1z1yavks3imxi1mxcyfmms3x91k5k3c";
+    };
+
+    buildInputs = [
+      intarweb
+      uri-common
+      uri-generic
+      sendfile
+      srfi-1
+      srfi-13
+      srfi-14
+      srfi-18
+    ];
+  };
+
   srfi-1 = eggDerivation {
     name = "srfi-1-0.5.1";
 
@@ -120,6 +407,20 @@ rec {
     ];
   };
 
+  srfi-18 = eggDerivation {
+    name = "srfi-18-0.1.6";
+
+    src = fetchegg {
+      name = "srfi-18";
+      version = "0.1.6";
+      sha256 = "00lykm5lqbrcxl3dab9dqwimpgm36v4ys2957k3vdlg4xdb1abfa";
+    };
+
+    buildInputs = [
+      
+    ];
+  };
+
   srfi-37 = eggDerivation {
     name = "srfi-37-1.4";
 
@@ -133,5 +434,118 @@ rec {
       
     ];
   };
+
+  srfi-69 = eggDerivation {
+    name = "srfi-69-0.4.1";
+
+    src = fetchegg {
+      name = "srfi-69";
+      version = "0.4.1";
+      sha256 = "1l102kppncz27acsr4jyi46q0r7g2lb6gdbkd6p3h1xmvwcnk2hl";
+    };
+
+    buildInputs = [
+      
+    ];
+  };
+
+  string-utils = eggDerivation {
+    name = "string-utils-2.4.0";
+
+    src = fetchegg {
+      name = "string-utils";
+      version = "2.4.0";
+      sha256 = "09m3s0p199r2nmvc8qnqvbxjbq967gvwqrzp236wsw3hdcil6p8v";
+    };
+
+    buildInputs = [
+      srfi-1
+      srfi-13
+      srfi-69
+      miscmacros
+      check-errors
+      utf8
+    ];
+  };
+
+  symbol-utils = eggDerivation {
+    name = "symbol-utils-2.1.0";
+
+    src = fetchegg {
+      name = "symbol-utils";
+      version = "2.1.0";
+      sha256 = "17nq8bj18f3bbf3mdfx1m8agy97izn1xcl8ymvgvvd5g384b2xil";
+    };
+
+    buildInputs = [
+      check-errors
+    ];
+  };
+
+  tcp6 = eggDerivation {
+    name = "tcp6-0.2.1";
+
+    src = fetchegg {
+      name = "tcp6";
+      version = "0.2.1";
+      sha256 = "14dynnjgac28f46v781hi6kam326q6rh57pf0pvl0chdva4hlf3q";
+    };
+
+    buildInputs = [
+      socket
+      srfi-1
+    ];
+  };
+
+  uri-common = eggDerivation {
+    name = "uri-common-2.0";
+
+    src = fetchegg {
+      name = "uri-common";
+      version = "2.0";
+      sha256 = "07rq7ppkyk3i85vqspc048pnj6gmjhj236z00chslli9xybqkgrd";
+    };
+
+    buildInputs = [
+      uri-generic
+      defstruct
+      matchable
+      srfi-1
+      srfi-13
+      srfi-14
+    ];
+  };
+
+  uri-generic = eggDerivation {
+    name = "uri-generic-3.2";
+
+    src = fetchegg {
+      name = "uri-generic";
+      version = "3.2";
+      sha256 = "1lpvnk1mnhmrga149km7ygpy7fkq7z2pvw0mvpx2aql03l8gpdsj";
+    };
+
+    buildInputs = [
+      matchable
+      srfi-1
+      srfi-14
+    ];
+  };
+
+  utf8 = eggDerivation {
+    name = "utf8-3.6.2";
+
+    src = fetchegg {
+      name = "utf8";
+      version = "3.6.2";
+      sha256 = "10wzp3qmwik4gx3hhaqm2n83wza0rllgy57363h5ccv8fga5nnm6";
+    };
+
+    buildInputs = [
+      srfi-69
+      iset
+      regex
+    ];
+  };
 }
 
diff --git a/pkgs/development/compilers/chicken/5/eggs.scm b/pkgs/development/compilers/chicken/5/eggs.scm
index 499109470849..6e3405b95ec9 100644
--- a/pkgs/development/compilers/chicken/5/eggs.scm
+++ b/pkgs/development/compilers/chicken/5/eggs.scm
@@ -1,6 +1,11 @@
 ;; Eggs used by egg2nix
 args
 matchable
+apropos
+spiffy
+json
+tcp6
+sha2
 
 ;; other eggs to include in nixpkgs
 srfi-189
diff --git a/pkgs/development/compilers/hare/config-template.mk b/pkgs/development/compilers/hare/config-template.mk
new file mode 100644
index 000000000000..1d0783b118d3
--- /dev/null
+++ b/pkgs/development/compilers/hare/config-template.mk
@@ -0,0 +1,27 @@
+## Template to generate config.mk via substitute-all
+
+# set PREFIX externally
+BINDIR = $(PREFIX)/bin
+MANDIR = $(PREFIX)/share/man
+SRCDIR = $(PREFIX)/src
+STDLIB = $(SRCDIR)/hare/stdlib
+
+HAREPATH = $(SRCDIR)/hare/stdlib:$(SRCDIR)/hare/third-party
+
+## Build configuration
+
+# Platform to build for
+PLATFORM = @platform@
+ARCH = @arch@
+
+# External tools and flags
+HAREC = harec
+HAREFLAGS = @hareflags@
+QBE = qbe
+AS = as
+LD = ld
+AR = ar
+SCDOC = scdoc
+
+# Where to store build artifacts
+# set HARECACHE externally
diff --git a/pkgs/development/compilers/hare/hare.nix b/pkgs/development/compilers/hare/hare.nix
new file mode 100644
index 000000000000..4effebf0f84a
--- /dev/null
+++ b/pkgs/development/compilers/hare/hare.nix
@@ -0,0 +1,91 @@
+{ lib
+, stdenv
+, fetchFromSourcehut
+, binutils-unwrapped
+, harec
+, makeWrapper
+, qbe
+, scdoc
+, substituteAll
+}:
+
+stdenv.mkDerivation rec {
+  pname = "hare";
+  version = "0.pre+date=2022-04-27";
+
+  src = fetchFromSourcehut {
+    name = pname + "-src";
+    owner = "~sircmpwn";
+    repo = pname;
+    rev = "1bfb2e6dee850c675a8831b41420800d3c62c2a0";
+    hash = "sha256-1b7U5u3PM3jmnH/OnY9O++GTPyVOdFkJ0fwJBoDZgSU=";
+  };
+
+  nativeBuildInputs = [
+    binutils-unwrapped
+    harec
+    makeWrapper
+    qbe
+    scdoc
+  ];
+
+  buildInputs = [
+    binutils-unwrapped
+    harec
+    qbe
+  ];
+
+  strictDeps = true;
+
+  configurePhase =
+    let
+      # https://harelang.org/platforms/
+      arch =
+        if stdenv.isx86_64 then "x86_64"
+        else if stdenv.isAarch64 then "aarch64"
+        else if stdenv.isRiscV64 then "riscv64"
+        else "unsupported";
+      platform =
+        if stdenv.isLinux then "linux"
+        else if stdenv.isFreeBSD then "freebsd"
+        else "unsupported";
+      hareflags = "";
+      config-file = substituteAll {
+        src = ./config-template.mk;
+        inherit arch platform hareflags;
+      };
+    in
+      ''
+        runHook preConfigure
+
+        export HARECACHE="$NIX_BUILD_TOP/.harecache"
+        cat ${config-file} > config.mk
+
+        runHook postConfigure
+      '';
+
+  makeFlags = [
+    "PREFIX=${placeholder "out"}"
+  ];
+
+  postInstall =
+    let
+      binPath = lib.makeBinPath [
+        binutils-unwrapped
+        harec
+        qbe
+      ];
+    in
+      ''
+        wrapProgram $out/bin/hare --prefix PATH : ${binPath}
+      '';
+
+  meta = with lib; {
+    homepage = "http://harelang.org/";
+    description =
+      "A systems programming language designed to be simple, stable, and robust";
+    license = licenses.gpl3Only;
+    maintainers = with maintainers; [ AndersonTorres ];
+    inherit (harec.meta) platforms badPlatforms;
+  };
+}
diff --git a/pkgs/development/compilers/hare/harec.nix b/pkgs/development/compilers/hare/harec.nix
new file mode 100644
index 000000000000..a3ad53350b09
--- /dev/null
+++ b/pkgs/development/compilers/hare/harec.nix
@@ -0,0 +1,45 @@
+{ lib
+, stdenv
+, fetchFromSourcehut
+, qbe
+}:
+
+stdenv.mkDerivation rec {
+  pname = "harec";
+  version = "0.pre+date=2022-04-26";
+
+  src = fetchFromSourcehut {
+    name = pname + "-src";
+    owner = "~sircmpwn";
+    repo = pname;
+    rev = "e5fb5176ba629e98ace5fcb3aa427b2c25d8fdf0";
+    hash = "sha256-sqt3q6sarzrpyJ/1QYM1WTukrZpflAmAYq6pQwAwe18=";
+  };
+
+  nativeBuildInputs = [
+    qbe
+  ];
+
+  buildInputs = [
+    qbe
+  ];
+
+  # TODO: report upstream
+  hardeningDisable = [ "fortify" ];
+
+  strictDeps = true;
+
+  doCheck = true;
+
+  meta = with lib; {
+    homepage = "http://harelang.org/";
+    description = "Bootstrapping Hare compiler written in C for POSIX systems";
+    license = licenses.gpl3Only;
+    maintainers = with maintainers; [ AndersonTorres ];
+    # The upstream developers do not like proprietary operating systems; see
+    # https://harelang.org/platforms/
+    platforms = with platforms;
+      lib.intersectLists (freebsd ++ linux) (aarch64 ++ x86_64 ++ riscv64);
+    badPlatforms = with platforms; darwin;
+  };
+}
diff --git a/pkgs/development/libraries/doctest/default.nix b/pkgs/development/libraries/doctest/default.nix
index 11a2906b5c0f..360c643f5233 100644
--- a/pkgs/development/libraries/doctest/default.nix
+++ b/pkgs/development/libraries/doctest/default.nix
@@ -2,19 +2,19 @@
 
 stdenv.mkDerivation rec {
   pname = "doctest";
-  version = "2.4.7";
+  version = "2.4.8";
 
   src = fetchFromGitHub {
-    owner = "onqtam";
+    owner = "doctest";
     repo = "doctest";
-    rev = version;
-    sha256 = "sha256-pXUg+NHSCKOudkmDCU3ePZrvs8DlM/CEZntEd78oTJ0=";
+    rev = "v${version}";
+    sha256 = "sha256-/4lyCQZHsa32ozes5MJ0JZpQ99MECRlgFeSzN/Zs/BQ=";
   };
 
   nativeBuildInputs = [ cmake ];
 
   meta = with lib; {
-    homepage = "https://github.com/onqtam/doctest";
+    homepage = "https://github.com/doctest/doctest";
     description = "The fastest feature-rich C++11/14/17/20 single-header testing framework";
     platforms = platforms.all;
     license = licenses.mit;
diff --git a/pkgs/development/python-modules/aws-lambda-builders/default.nix b/pkgs/development/python-modules/aws-lambda-builders/default.nix
index 0aac1e71e7c4..ce5c753a4af8 100644
--- a/pkgs/development/python-modules/aws-lambda-builders/default.nix
+++ b/pkgs/development/python-modules/aws-lambda-builders/default.nix
@@ -10,7 +10,7 @@
 
 buildPythonPackage rec {
   pname = "aws-lambda-builders";
-  version = "1.14.0";
+  version = "1.15.0";
   format = "setuptools";
 
   disabled = pythonOlder "3.7";
@@ -18,8 +18,8 @@ buildPythonPackage rec {
   src = fetchFromGitHub {
     owner = "awslabs";
     repo = "aws-lambda-builders";
-    rev = "v${version}";
-    sha256 = "sha256-ypzo0cYvP8LV74cQMzHIFDk3LH0bbEB4UxPxRuqe2fc=";
+    rev = "refs/tags/v${version}";
+    sha256 = "sha256-kXglpj82e+LzUI6SW86wyfG2lGVnL/PsrTNsseg4VYk=";
   };
 
   propagatedBuildInputs = [
diff --git a/pkgs/development/python-modules/superqt/default.nix b/pkgs/development/python-modules/superqt/default.nix
index af600f623423..1386706a3317 100644
--- a/pkgs/development/python-modules/superqt/default.nix
+++ b/pkgs/development/python-modules/superqt/default.nix
@@ -11,13 +11,13 @@
 
 buildPythonPackage rec {
   pname = "superqt";
-  version = "0.3.1";
+  version = "0.3.2";
 
   src = fetchFromGitHub {
     owner = "napari";
     repo = pname;
-    rev = "v${version}";
-    sha256 = "sha256-DPjJxOgybNvZ3YvYHr48fmx59Puck61Dzm2G4M9qKo4=";
+    rev = "refs/tags/v${version}";
+    sha256 = "sha256-P1uKQaYgXVTE7DK5w4Ct4aJyfdQ6jUPfaTOcYkpo9pc=";
   };
   format = "pyproject";
   nativeBuildInputs = [ setuptools-scm ];
diff --git a/pkgs/development/tools/vulkan-validation-layers/default.nix b/pkgs/development/tools/vulkan-validation-layers/default.nix
index 586aa1797bc4..17ef58be4bcb 100644
--- a/pkgs/development/tools/vulkan-validation-layers/default.nix
+++ b/pkgs/development/tools/vulkan-validation-layers/default.nix
@@ -3,7 +3,7 @@
 , stdenv
 , fetchFromGitHub
 , cmake
-, pkgconfig
+, pkg-config
 , glslang
 , libffi
 , libX11
@@ -45,7 +45,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [
     cmake
-    pkgconfig
+    pkg-config
   ];
 
   buildInputs = [
@@ -65,7 +65,7 @@ stdenv.mkDerivation rec {
     "-DSPIRV_HEADERS_INSTALL_DIR=${spirv-headers}"
     "-DROBIN_HOOD_HASHING_INSTALL_DIR=${robin-hood-hashing}"
     "-DBUILD_LAYER_SUPPORT_FILES=ON"
-    "-DPKG_CONFIG_EXECUTABLE=${pkgconfig}/bin/pkg-config"
+    "-DPKG_CONFIG_EXECUTABLE=${pkg-config}/bin/pkg-config"
     # Hide dev warnings that are useless for packaging
     "-Wno-dev"
   ];
diff --git a/pkgs/servers/hqplayerd/default.nix b/pkgs/servers/hqplayerd/default.nix
index e2b3abc6c0a6..fb6194eaab3d 100644
--- a/pkgs/servers/hqplayerd/default.nix
+++ b/pkgs/servers/hqplayerd/default.nix
@@ -1,6 +1,6 @@
-{ stdenv
-, alsa-lib
+{ stdenv, lib
 , addOpenGLRunpath
+, alsa-lib
 , autoPatchelfHook
 , cairo
 , fetchurl
@@ -8,26 +8,25 @@
 , gcc11
 , gnome
 , gssdp
-, lame
-, lib
-, libgmpris
-, llvmPackages_10
-, mpg123
-, rpmextract
-, wavpack
-
 , gupnp
 , gupnp-av
+, lame
+, libgmpris
+, libusb-compat-0_1
+, llvmPackages_10
 , meson
+, mpg123
 , ninja
+, rpmextract
+, wavpack
 }:
 stdenv.mkDerivation rec {
   pname = "hqplayerd";
-  version = "4.30.3-87";
+  version = "4.31.0-89";
 
   src = fetchurl {
     url = "https://www.signalyst.eu/bins/${pname}/fc35/${pname}-${version}.fc35.x86_64.rpm";
-    hash = "sha256-fEze4aScWDwHDTXU0GatdopQf6FWcywWCGhR/7zXK7A=";
+    hash = "sha256-L9S3MIbvvBViKSxu0x/GkE/pa61NETtw4vA8xM4rJEg=";
   };
 
   unpackPhase = ''
@@ -47,6 +46,7 @@ stdenv.mkDerivation rec {
     gupnp-av
     lame
     libgmpris
+    libusb-compat-0_1
     llvmPackages_10.openmp
     mpg123
     wavpack
@@ -58,34 +58,37 @@ stdenv.mkDerivation rec {
   installPhase = ''
     runHook preInstall
 
-    # main executable
-    mkdir -p $out/bin
-    cp ./usr/bin/hqplayerd $out/bin
+    # executables
+    mkdir -p $out
+    cp -rv ./usr/bin $out/bin
 
-    # main configuration
-    mkdir -p $out/etc/hqplayer
-    cp ./etc/hqplayer/hqplayerd.xml $out/etc/hqplayer/
+    # libs
+    mkdir -p $out
+    cp -rv ./opt/hqplayerd/lib $out
+
+    # configuration
+    mkdir -p $out/etc
+    cp -rv ./etc/hqplayer $out/etc/
 
     # udev rules
-    mkdir -p $out/etc/udev/rules.d
-    cp ./etc/udev/rules.d/50-taudio2.rules $out/etc/udev/rules.d/
+    mkdir -p $out/etc/udev
+    cp -rv ./etc/udev/rules.d $out/etc/udev/
 
     # kernel module cfgs
-    mkdir -p $out/etc/modules-load.d
-    cp ./etc/modules-load.d/taudio2.conf $out/etc/modules-load.d/
+    mkdir -p $out/etc
+    cp -rv ./etc/modules-load.d $out/etc/
 
     # systemd service file
-    mkdir -p $out/lib/systemd/system
-    cp ./usr/lib/systemd/system/hqplayerd.service $out/lib/systemd/system/
+    mkdir -p $out/lib/systemd
+    cp -rv ./usr/lib/systemd/system $out/lib/systemd/
 
     # documentation
-    mkdir -p $out/share/doc/hqplayerd
-    cp ./usr/share/doc/hqplayerd/* $out/share/doc/hqplayerd/
+    mkdir -p $out/share/doc
+    cp -rv ./usr/share/doc/hqplayerd $out/share/doc/
 
     # misc service support files
-    mkdir -p $out/var/lib/hqplayer
-    cp -r ./var/lib/hqplayer/web $out/var/lib/hqplayer
-
+    mkdir -p $out/var/lib
+    cp -rv ./var/lib/hqplayer $out/var/lib/
     runHook postInstall
   '';
 
diff --git a/pkgs/servers/roon-server/default.nix b/pkgs/servers/roon-server/default.nix
index a9166985ead2..9e8c0254fca9 100644
--- a/pkgs/servers/roon-server/default.nix
+++ b/pkgs/servers/roon-server/default.nix
@@ -16,7 +16,7 @@
 }:
 stdenv.mkDerivation rec {
   pname = "roon-server";
-  version = "1.8-933";
+  version = "1.8-935";
 
   src =
     let
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
     in
     fetchurl {
       url = "http://download.roonlabs.com/builds/RoonServer_linuxx64_${urlVersion}.tar.bz2";
-      hash = "sha256-9vAp60hck1Zys0Yv4uibLp7GUAoPvkE9AxNp9DXsQfE=";
+      hash = "sha256-6I612imOCqxVlNu6zCXWS/Yy8bnot+0723t3Se4DjLg=";
     };
 
   dontConfigure = true;
diff --git a/pkgs/servers/web-apps/wallabag/default.nix b/pkgs/servers/web-apps/wallabag/default.nix
index 6730608f7074..c288df7a11b7 100644
--- a/pkgs/servers/web-apps/wallabag/default.nix
+++ b/pkgs/servers/web-apps/wallabag/default.nix
@@ -4,8 +4,10 @@
 }:
 
 # Point the environment variable $WALLABAG_DATA to a data directory
-# that contains the folder `app/config` which must be a clone of
+# that contains the folder `app` which must be a clone of
 # wallabag's configuration files with your customized `parameters.yml`.
+# In practice you need to copy `${pkgs.wallabag}/app` and the
+# customizzed `parameters.yml` to $WALLABAG_DATA.
 # These need to be updated every package upgrade.
 #
 # After a package upgrade, empty the `var/cache` folder or unexpected
diff --git a/pkgs/tools/graphics/vulkan-tools/default.nix b/pkgs/tools/graphics/vulkan-tools/default.nix
index 77d23df4923f..9cc83e197691 100644
--- a/pkgs/tools/graphics/vulkan-tools/default.nix
+++ b/pkgs/tools/graphics/vulkan-tools/default.nix
@@ -2,7 +2,7 @@
 , stdenv
 , fetchFromGitHub
 , cmake
-, pkgconfig
+, pkg-config
 , glslang
 , libffi
 , libX11
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [
     cmake
-    pkgconfig
+    pkg-config
   ];
 
   buildInputs = [
@@ -59,7 +59,7 @@ stdenv.mkDerivation rec {
     "-DBUILD_ICD=OFF"
     # vulkaninfo loads libvulkan using dlopen, so we have to add it manually to RPATH
     "-DCMAKE_INSTALL_RPATH=${libraryPath}"
-    "-DPKG_CONFIG_EXECUTABLE=${pkgconfig}/bin/pkg-config"
+    "-DPKG_CONFIG_EXECUTABLE=${pkg-config}/bin/pkg-config"
     # Hide dev warnings that are useless for packaging
     "-Wno-dev"
   ];
diff --git a/pkgs/tools/package-management/nix/default.nix b/pkgs/tools/package-management/nix/default.nix
index dfadd360ed3e..cf9b26a5603a 100644
--- a/pkgs/tools/package-management/nix/default.nix
+++ b/pkgs/tools/package-management/nix/default.nix
@@ -89,12 +89,12 @@ in lib.makeExtensible (self: {
 
   unstable = lib.lowPrio (common rec {
     version = "2.8";
-    suffix = "pre20220428_${lib.substring 0 7 src.rev}";
+    suffix = "pre20220503_${lib.substring 0 7 src.rev}";
     src = fetchFromGitHub {
       owner = "NixOS";
       repo = "nix";
-      rev = "4bb111c8d4c5692db2f735c2803f632f8c30b6ab";
-      sha256 = "sha256-AmxyCgpd53JBvvj6jPoGMP3eEisgu58YjaZEmhoTlGw=";
+      rev = "9489b4b7ef73ab20e8f49213d8711ca56b59107e";
+      sha256 = "sha256-eTRr2MkP9MMqpmHtsCPMbyLBQLrLPnTh4D8RXT4MKk4=";
     };
   });
 })
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index f6a6fb4a3dfa..aa6e8e6e0bb3 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -6830,6 +6830,9 @@ with pkgs;
     llvmPackages = llvmPackages_9;
   };
 
+  harec = callPackage ../development/compilers/hare/harec.nix { };
+  hare = callPackage ../development/compilers/hare/hare.nix { };
+
   ham = pkgs.perlPackages.ham;
 
   hardinfo = callPackage ../tools/system/hardinfo { };
@@ -12694,7 +12697,7 @@ with pkgs;
   gcc_latest = gcc11;
 
   # Use the same GCC version as the one from stdenv by default
-  gfortran = wrapCC (gccStdenv.cc.cc.override {
+  gfortran = wrapCC (gcc.cc.override {
     name = "gfortran";
     langFortran = true;
     langCC = false;