diff --git a/maintainers/maintainer-list.nix b/maintainers/maintainer-list.nix
index 68ed8a02c3ef..819f8ac21005 100644
--- a/maintainers/maintainer-list.nix
+++ b/maintainers/maintainer-list.nix
@@ -9197,6 +9197,12 @@
       fingerprint = "0EC3 FA89 EFBA B421 F82E  40B0 2567 6BCB FFAD 76B1";
     }];
   };
+  sophrosyne = {
+    email = "joshuaortiz@tutanota.com";
+    github = "sophrosyne97";
+    githubId = 53029739;
+    name = "Joshua Ortiz";
+  };
   sorki = {
     email = "srk@48.io";
     github = "sorki";
diff --git a/nixos/modules/services/networking/mxisd.nix b/nixos/modules/services/networking/mxisd.nix
index 482d6ff456b1..f29d190c6262 100644
--- a/nixos/modules/services/networking/mxisd.nix
+++ b/nixos/modules/services/networking/mxisd.nix
@@ -41,8 +41,8 @@ in {
 
       package = mkOption {
         type = types.package;
-        default = pkgs.mxisd;
-        defaultText = "pkgs.mxisd";
+        default = pkgs.ma1sd;
+        defaultText = "pkgs.ma1sd";
         description = "The mxisd/ma1sd package to use";
       };
 
diff --git a/nixos/modules/services/web-servers/nginx/default.nix b/nixos/modules/services/web-servers/nginx/default.nix
index 389911ffcce8..51c2f3febdc7 100644
--- a/nixos/modules/services/web-servers/nginx/default.nix
+++ b/nixos/modules/services/web-servers/nginx/default.nix
@@ -249,7 +249,15 @@ let
           + optionalString (ssl && vhost.http2) "http2 "
           + optionalString vhost.default "default_server "
           + optionalString (extraParameters != []) (concatStringsSep " " extraParameters)
-          + ";";
+          + ";"
+          + (if ssl && vhost.http3 then ''
+          # UDP listener for **QUIC+HTTP/3
+          listen ${addr}:${toString port} http3 reuseport;
+          # Advertise that HTTP/3 is available
+          add_header Alt-Svc 'h3=":443"';
+          # Sent when QUIC was used
+          add_header QUIC-Status $quic;
+          '' else "");
 
         redirectListen = filter (x: !x.ssl) defaultListen;
 
diff --git a/nixos/modules/services/web-servers/nginx/vhost-options.nix b/nixos/modules/services/web-servers/nginx/vhost-options.nix
index cf211ea9a71b..1f5fe6a368c1 100644
--- a/nixos/modules/services/web-servers/nginx/vhost-options.nix
+++ b/nixos/modules/services/web-servers/nginx/vhost-options.nix
@@ -151,6 +151,19 @@ with lib;
       '';
     };
 
+    http3 = mkOption {
+      type = types.bool;
+      default = false;
+      description = ''
+        Whether to enable HTTP 3.
+        This requires using <literal>pkgs.nginxQuic</literal> package
+        which can be achived by setting <literal>services.nginx.package = pkgs.nginxQuic;</literal>.
+        Note that HTTP 3 support is experimental and
+        *not* yet recommended for production.
+        Read more at https://quic.nginx.org/
+      '';
+    };
+
     root = mkOption {
       type = types.nullOr types.path;
       default = null;
diff --git a/nixos/tests/mxisd.nix b/nixos/tests/mxisd.nix
index 22755ea353b6..354612a8a53d 100644
--- a/nixos/tests/mxisd.nix
+++ b/nixos/tests/mxisd.nix
@@ -6,25 +6,16 @@ import ./make-test-python.nix ({ pkgs, ... } : {
   };
 
   nodes = {
-    server_mxisd = args : {
+    server = args : {
       services.mxisd.enable = true;
       services.mxisd.matrix.domain = "example.org";
     };
-
-    server_ma1sd = args : {
-      services.mxisd.enable = true;
-      services.mxisd.matrix.domain = "example.org";
-      services.mxisd.package = pkgs.ma1sd;
-    };
   };
 
   testScript = ''
     start_all()
-    server_mxisd.wait_for_unit("mxisd.service")
-    server_mxisd.wait_for_open_port(8090)
-    server_mxisd.succeed("curl -Ssf 'http://127.0.0.1:8090/_matrix/identity/api/v1'")
-    server_ma1sd.wait_for_unit("mxisd.service")
-    server_ma1sd.wait_for_open_port(8090)
-    server_ma1sd.succeed("curl -Ssf 'http://127.0.0.1:8090/_matrix/identity/api/v1'")
+    server.wait_for_unit("mxisd.service")
+    server.wait_for_open_port(8090)
+    server.succeed("curl -Ssf 'http://127.0.0.1:8090/_matrix/identity/api/v1'")
   '';
 })
diff --git a/pkgs/applications/misc/dwmblocks/default.nix b/pkgs/applications/misc/dwmblocks/default.nix
new file mode 100644
index 000000000000..45757787c7c3
--- /dev/null
+++ b/pkgs/applications/misc/dwmblocks/default.nix
@@ -0,0 +1,35 @@
+{ lib, stdenv, fetchFromGitHub, libX11, patches ? [ ], writeText, conf ? null }:
+
+stdenv.mkDerivation {
+  pname = "dwmblocks";
+  version = "unstable-2020-12-27";
+
+  src = fetchFromGitHub {
+    owner = "torrinfail";
+    repo = "dwmblocks";
+    rev = "96cbb453e5373c05372fd4bf3faacfa53e409067";
+    sha256 = "00lxfxsrvhm60zzqlcwdv7xkqzya69mgpi2mr3ivzbc8s9h8nwqx";
+  };
+
+  buildInputs = [ libX11 ];
+
+  inherit patches;
+
+  postPatch =
+    let
+      configFile =
+        if lib.isDerivation conf || builtins.isPath conf
+        then conf else writeText "blocks.def.h" conf;
+    in
+      lib.optionalString (conf != null) "cp ${configFile} blocks.def.h";
+
+  makeFlags = [ "PREFIX=$(out)" ];
+
+  meta = with lib; {
+    description = "Modular status bar for dwm written in c";
+    homepage = "https://github.com/torrinfail/dwmblocks";
+    license = licenses.isc;
+    maintainers = with maintainers; [ sophrosyne ];
+    platforms = platforms.all;
+  };
+}
diff --git a/pkgs/applications/networking/browsers/firefox/wrapper.nix b/pkgs/applications/networking/browsers/firefox/wrapper.nix
index 390b26a1b9ee..bc9cf8a326e3 100644
--- a/pkgs/applications/networking/browsers/firefox/wrapper.nix
+++ b/pkgs/applications/networking/browsers/firefox/wrapper.nix
@@ -263,7 +263,6 @@ let
             --suffix PATH ':' "$out${browser.execdir or "/bin"}" \
             --set MOZ_APP_LAUNCHER "${browserName}${nameSuffix}" \
             --set MOZ_SYSTEM_DIR "$out/lib/mozilla" \
-            --set SNAP_NAME "firefox" \
             --set MOZ_LEGACY_PROFILES 1 \
             --set MOZ_ALLOW_DOWNGRADE 1 \
             ${lib.optionalString forceWayland ''
diff --git a/pkgs/applications/networking/instant-messengers/bitlbee-facebook/default.nix b/pkgs/applications/networking/instant-messengers/bitlbee-facebook/default.nix
index 95bf8c026627..e5a45a1e9f52 100644
--- a/pkgs/applications/networking/instant-messengers/bitlbee-facebook/default.nix
+++ b/pkgs/applications/networking/instant-messengers/bitlbee-facebook/default.nix
@@ -1,27 +1,16 @@
-{ lib, fetchFromGitHub, fetchpatch, stdenv, bitlbee, autoconf, automake, libtool, pkg-config, json-glib }:
+{ lib, fetchFromGitHub, stdenv, bitlbee, autoconf, automake, libtool, pkg-config, json-glib }:
 
 stdenv.mkDerivation rec {
   pname = "bitlbee-facebook";
-  version = "1.2.1";
+  version = "1.2.2";
 
   src = fetchFromGitHub {
     rev = "v${version}";
     owner = "bitlbee";
     repo = "bitlbee-facebook";
-    sha256 = "1yjhjhk3jzjip13lq009vlg84lm2lzwhac5jy0aq3vkcz6rp94rc";
+    sha256 = "1qiiiq17ybylbhwgbwsvmshb517589r8yy5rsh1rfaylmlcxyy7z";
   };
 
-  # TODO: This patch should be included with the next release after v1.2.1
-  #       these lines should be removed when this happens.
-  patches = [
-    (fetchpatch {
-        name = "FB_ORCA_AGENT_version_bump.patch";
-        url = "https://github.com/bitlbee/bitlbee-facebook/commit/49ea312d98b0578b9b2c1ff759e2cfa820a41f4d.patch";
-        sha256 = "0nzyyg8pw4f2jcickcpxq7r2la5wgl7q6iz94lhzybrkhss5753d";
-      }
-    )
-  ];
-
   nativeBuildInputs = [ autoconf automake libtool pkg-config ];
 
   buildInputs = [ bitlbee json-glib ];
diff --git a/pkgs/applications/version-management/subversion/default.nix b/pkgs/applications/version-management/subversion/default.nix
index 18eaea0dd60a..1f604c44d785 100644
--- a/pkgs/applications/version-management/subversion/default.nix
+++ b/pkgs/applications/version-management/subversion/default.nix
@@ -17,7 +17,7 @@ assert javahlBindings -> jdk != null && perl != null;
 
 let
 
-  common = { version, sha256, extraBuildInputs ? [ ] }: stdenv.mkDerivation (rec {
+  common = { version, sha256 }: stdenv.mkDerivation (rec {
     inherit version;
     pname = "subversion";
 
@@ -29,8 +29,7 @@ let
     # Can't do separate $lib and $bin, as libs reference bins
     outputs = [ "out" "dev" "man" ];
 
-    buildInputs = [ zlib apr aprutil sqlite openssl ]
-      ++ extraBuildInputs
+    buildInputs = [ zlib apr aprutil sqlite openssl lz4 utf8proc ]
       ++ lib.optional httpSupport serf
       ++ lib.optional pythonBindings python
       ++ lib.optional perlBindings perl
@@ -114,12 +113,10 @@ in {
   subversion_1_10 = common {
     version = "1.10.7";
     sha256 = "1nhrd8z6c94sc0ryrzpyd98qdn5a5g3x0xv1kdb9da4drrk8y2ww";
-    extraBuildInputs = [ lz4 utf8proc ];
   };
 
   subversion = common {
     version = "1.12.2";
     sha256 = "0wgpw3kzsiawzqk4y0xgh1z93kllxydgv4lsviim45y5wk4bbl1v";
-    extraBuildInputs = [ lz4 utf8proc ];
   };
 }
diff --git a/pkgs/build-support/build-fhs-userenv/env.nix b/pkgs/build-support/build-fhs-userenv/env.nix
index 89b567a249f6..226904f311b6 100644
--- a/pkgs/build-support/build-fhs-userenv/env.nix
+++ b/pkgs/build-support/build-fhs-userenv/env.nix
@@ -81,6 +81,9 @@ let
       # compatibility with NixOS
       ln -s /host/etc/static static
 
+      # symlink nix config
+      ln -s /host/etc/nix nix
+
       # symlink some NSS stuff
       ln -s /host/etc/passwd passwd
       ln -s /host/etc/group group
diff --git a/pkgs/data/themes/flat-remix-gtk/default.nix b/pkgs/data/themes/flat-remix-gtk/default.nix
new file mode 100644
index 000000000000..afdf478fea03
--- /dev/null
+++ b/pkgs/data/themes/flat-remix-gtk/default.nix
@@ -0,0 +1,33 @@
+{ stdenv
+, lib
+, fetchFromGitHub
+, gtk-engine-murrine
+}:
+
+stdenv.mkDerivation rec {
+  pname = "flat-remix-gtk";
+  version = "20201129";
+
+  src = fetchFromGitHub {
+    owner = "daniruiz";
+    repo = pname;
+    rev = version;
+    hash = "sha256-lAlHRVB/P3A1qWsXQZPZ3uhgctR4FLa+ocUrsbleXJU=";
+  };
+
+  dontBuild = true;
+
+  makeFlags = [ "PREFIX=$(out)" ];
+
+  propagatedUserEnvPkgs = [
+    gtk-engine-murrine
+  ];
+
+  meta = with lib; {
+    description = "GTK application theme inspired by material design";
+    homepage = "https://drasite.com/flat-remix-gtk";
+    license = licenses.gpl3Only;
+    platforms = platforms.all;
+    maintainers = [ maintainers.mkg20001 ];
+  };
+}
diff --git a/pkgs/desktops/cinnamon/cinnamon-common/default.nix b/pkgs/desktops/cinnamon/cinnamon-common/default.nix
index 11fcdb7452bb..127516e58c18 100644
--- a/pkgs/desktops/cinnamon/cinnamon-common/default.nix
+++ b/pkgs/desktops/cinnamon/cinnamon-common/default.nix
@@ -1,5 +1,4 @@
 { atk
-, autoreconfHook
 , cacert
 , fetchpatch
 , dbus
@@ -42,32 +41,25 @@
 , pciutils
 , timezonemap
 , libnma
+, meson
+, ninja
+, gst_all_1
 }:
 
-let
-  libcroco = callPackage ./libcroco.nix { };
-in
 stdenv.mkDerivation rec {
   pname = "cinnamon-common";
-  version = "4.6.1";
+  version = "4.8.6";
 
   src = fetchFromGitHub {
     owner = "linuxmint";
     repo = "cinnamon";
     rev = version;
-    sha256 = "149lhg953fa0glm250f76z2jzyaabh97jxiqkjnqvsk6bjk1d0bw";
+    hash = "sha256-4DMXQYH1/RjLhgrn55I7Vkk6+gGsR+OVmiwxVHUIyro=";
   };
 
   patches = [
-    # remove dbus-glib
-    (fetchpatch {
-      url = "https://github.com/linuxmint/cinnamon/commit/ce99760fa15c3de2e095b9a5372eeaca646fbed1.patch";
-      sha256 = "0p2sbdi5w7sgblqbgisb6f8lcj1syzq5vlk0ilvwaqayxjylg8gz";
-    })
-    (fetchpatch {
-      url = "https://leigh123linux.fedorapeople.org/pub/patches/new_cjs.patch";
-      sha256 = "07biv3vkbn3jzijbdrxcw73p8xz2djbsax014mlkvmryrmys0rg4";
-    })
+    ./use-sane-install-dir.patch
+    ./libdir.patch
   ];
 
   buildInputs = [
@@ -84,7 +76,6 @@ stdenv.mkDerivation rec {
     glib
     gtk3
     json-glib
-    libcroco
     libsoup
     libstartup_notification
     libXtst
@@ -94,6 +85,7 @@ stdenv.mkDerivation rec {
     polkit
     libxml2
     libgnomekbd
+    gst_all_1.gstreamer
 
     # bindings
     cairo
@@ -114,23 +106,16 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [
     gobject-introspection
-    autoreconfHook
+    meson
+    ninja
     wrapGAppsHook
     intltool
     gtk-doc
   ];
 
-  autoreconfPhase = ''
-    GTK_DOC_CHECK=false NOCONFIGURE=1 bash ./autogen.sh
-  '';
-
   configureFlags = [ "--disable-static" "--with-ca-certificates=${cacert}/etc/ssl/certs/ca-bundle.crt" "--with-libxml=${libxml2.dev}/include/libxml2" "--enable-gtk-doc=no" ];
 
   postPatch = ''
-    substituteInPlace src/Makefile.am \
-      --replace "\$(libdir)/muffin" "${muffin}/lib/muffin"
-    patchShebangs autogen.sh
-
     find . -type f -exec sed -i \
       -e s,/usr/share/cinnamon,$out/share/cinnamon,g \
       -e s,/usr/share/locale,/run/current-system/sw/share/locale,g \
diff --git a/pkgs/desktops/cinnamon/cinnamon-common/libcroco.nix b/pkgs/desktops/cinnamon/cinnamon-common/libcroco.nix
deleted file mode 100644
index d1ec77b70503..000000000000
--- a/pkgs/desktops/cinnamon/cinnamon-common/libcroco.nix
+++ /dev/null
@@ -1,33 +0,0 @@
-{ lib, stdenv, fetchurl, pkg-config, libxml2, glib, gnome3 }:
-
-stdenv.mkDerivation rec {
-  pname = "libcroco";
-  version = "0.6.13";
-
-  src = fetchurl {
-    url = "mirror://gnome/sources/${pname}/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
-    sha256 = "1m110rbj5d2raxcdp4iz0qp172284945awrsbdlq99ksmqsc4zkn";
-  };
-
-  outputs = [ "out" "dev" ];
-  outputBin = "dev";
-
-  configureFlags = lib.optional stdenv.isDarwin "--disable-Bsymbolic";
-
-  nativeBuildInputs = [ pkg-config ];
-  buildInputs = [ libxml2 glib ];
-
-  passthru = {
-    updateScript = gnome3.updateScript {
-      packageName = pname;
-    };
-  };
-
-  meta = with lib; {
-    description = "GNOME CSS2 parsing and manipulation toolkit";
-    homepage = https://gitlab.gnome.org/GNOME/libcroco;
-    license = licenses.lgpl2;
-    platforms = platforms.unix;
-  };
-}
-
diff --git a/pkgs/desktops/cinnamon/cinnamon-common/libdir.patch b/pkgs/desktops/cinnamon/cinnamon-common/libdir.patch
new file mode 100644
index 000000000000..7783d0b3ad12
--- /dev/null
+++ b/pkgs/desktops/cinnamon/cinnamon-common/libdir.patch
@@ -0,0 +1,25 @@
+From 1c99ff9b042d77d97a0841c78fceb7cfbf41aa8b Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Maciej=20Kr=C3=BCger?= <mkg20001@gmail.com>
+Date: Sun, 28 Feb 2021 05:58:09 +0100
+Subject: [PATCH] libdir patch
+
+---
+ meson.build | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/meson.build b/meson.build
+index 3c1e9a4f..a77d9b3c 100644
+--- a/meson.build
++++ b/meson.build
+@@ -14,7 +14,7 @@ includedir = get_option('includedir')
+ libexecdir = get_option('libexecdir')
+ desktopdir = join_paths(datadir, 'applications')
+ schemadir = join_paths(datadir, 'glib-2.0', 'schemas')
+-pkglibdir = join_paths(libdir, meson.project_name().to_lower())
++pkglibdir = libdir
+ servicedir = join_paths(datadir, 'dbus-1', 'services')
+ pkgdatadir = join_paths(datadir, meson.project_name().to_lower())
+ po_dir = join_paths(meson.source_root(), 'po')
+-- 
+2.30.0
+
diff --git a/pkgs/desktops/cinnamon/cinnamon-common/use-sane-install-dir.patch b/pkgs/desktops/cinnamon/cinnamon-common/use-sane-install-dir.patch
new file mode 100644
index 000000000000..8cb6949cb2d3
--- /dev/null
+++ b/pkgs/desktops/cinnamon/cinnamon-common/use-sane-install-dir.patch
@@ -0,0 +1,33 @@
+From f7e802959d7a5c217ed574cab30404fc769f174d Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Maciej=20Kr=C3=BCger?= <mkg20001@gmail.com>
+Date: Sat, 6 Feb 2021 14:26:26 +0100
+Subject: [PATCH] use sane install dir
+
+---
+ meson.build | 10 ++++++++--
+ 1 file changed, 8 insertions(+), 2 deletions(-)
+
+diff --git a/meson.build b/meson.build
+index bd803f20..3c1e9a4f 100644
+--- a/meson.build
++++ b/meson.build
+@@ -127,8 +127,14 @@ configure_file(
+ )
+ 
+ install_subdir(
+-    'files',
+-    install_dir: '/',
++    'files/usr',
++    install_dir: get_option('prefix'),
++    strip_directory: true,
++)
++
++install_subdir(
++    'files/etc',
++    install_dir: join_paths(get_option('prefix'), 'etc'),
+     strip_directory: true,
+ )
+ 
+-- 
+2.30.0
+
diff --git a/pkgs/desktops/cinnamon/cinnamon-control-center/default.nix b/pkgs/desktops/cinnamon/cinnamon-control-center/default.nix
index 4e951bfcc586..c2e50c65557e 100644
--- a/pkgs/desktops/cinnamon/cinnamon-control-center/default.nix
+++ b/pkgs/desktops/cinnamon/cinnamon-control-center/default.nix
@@ -1,11 +1,9 @@
 { lib, stdenv
 , fetchFromGitHub
 , pkg-config
-, autoreconfHook
 , glib
 , gettext
 , cinnamon-desktop
-, intltool
 , gtk3
 , libnotify
 , libxml2
@@ -20,7 +18,7 @@
 , libxklavier
 , networkmanager
 , libwacom
-, libtool
+, gnome3
 , wrapGAppsHook
 , tzdata
 , glibc
@@ -28,17 +26,19 @@
 , modemmanager
 , xorg
 , gdk-pixbuf
+, meson
+, ninja
 }:
 
 stdenv.mkDerivation rec {
   pname = "cinnamon-control-center";
-  version = "4.6.2";
+  version = "4.8.2";
 
   src = fetchFromGitHub {
     owner = "linuxmint";
     repo = pname;
     rev = version;
-    sha256 = "0fbgi2r2xikpa04k431qq9akngi9akyflq1kcks8f095qs5gsana";
+    hash = "sha256-vALThDY0uN9bV7b1fga3MK7b2/l5uL33+B2x6oSLPRE=";
   };
 
   buildInputs = [
@@ -70,16 +70,11 @@ stdenv.mkDerivation rec {
   ./panels/datetime/tz.h:34:#  define TZ_DATA_FILE "/usr/share/lib/zoneinfo/tab/zone_sun.tab" */
 
   postPatch = ''
-    patchShebangs ./autogen.sh
     sed 's|TZ_DIR "/usr/share/zoneinfo/"|TZ_DIR "${tzdata}/share/zoneinfo/"|g' -i ./panels/datetime/test-timezone.c
     sed 's|TZ_DATA_FILE "/usr/share/zoneinfo/zone.tab"|TZ_DATA_FILE "${tzdata}/share/zoneinfo/zone.tab"|g' -i ./panels/datetime/tz.h
     sed 's|"/usr/share/i18n/locales/"|"${glibc}/share/i18n/locales/"|g' -i panels/datetime/test-endianess.c
   '';
 
-  autoreconfPhase = ''
-    NOCONFIGURE=1 bash ./autogen.sh
-  '';
-
   # it needs to have access to that file, otherwise we can't run tests after build
 
   preBuild = ''
@@ -87,19 +82,23 @@ stdenv.mkDerivation rec {
     ln -s $PWD/panels/datetime $out/share/cinnamon-control-center/
   '';
 
+  mesonFlags = [
+    "-Dc_args=-I${glib.dev}/include/gio-unix-2.0"
+  ];
+
   preInstall = ''
-    rm -rfv $out
+    rm -r $out
   '';
 
-  doCheck = true;
+  # the only test is wacom-calibrator and it seems to need an xserver and prob more services aswell
+  doCheck = false;
 
   nativeBuildInputs = [
     pkg-config
-    autoreconfHook
+    meson
+    ninja
     wrapGAppsHook
     gettext
-    intltool
-    libtool
   ];
 
   meta = with lib; {
diff --git a/pkgs/desktops/cinnamon/cinnamon-desktop/default.nix b/pkgs/desktops/cinnamon/cinnamon-desktop/default.nix
index cdcabb1261fe..25af38d43b5e 100644
--- a/pkgs/desktops/cinnamon/cinnamon-desktop/default.nix
+++ b/pkgs/desktops/cinnamon/cinnamon-desktop/default.nix
@@ -17,13 +17,13 @@
 
 stdenv.mkDerivation rec {
   pname = "cinnamon-desktop";
-  version = "4.6.4";
+  version = "4.8.1";
 
   src = fetchFromGitHub {
     owner = "linuxmint";
     repo = pname;
     rev = version;
-    sha256 = "08z5hgc6dwdp9fczm75axwh8q9665iz4y2lxp92xp62r3k0v9fvd";
+    hash = "sha256-FLruY1lxzB3iJ/So3jSjrbv9e8VoN/0+U2YDXju/u3E=";
   };
 
   outputs = [ "out" "dev" ];
diff --git a/pkgs/desktops/cinnamon/cinnamon-menus/default.nix b/pkgs/desktops/cinnamon/cinnamon-menus/default.nix
index a17715064778..44566a94c6df 100644
--- a/pkgs/desktops/cinnamon/cinnamon-menus/default.nix
+++ b/pkgs/desktops/cinnamon/cinnamon-menus/default.nix
@@ -10,13 +10,13 @@
 
 stdenv.mkDerivation rec {
   pname = "cinnamon-menus";
-  version = "4.6.1";
+  version = "4.8.2";
 
   src = fetchFromGitHub {
     owner = "linuxmint";
     repo = pname;
     rev = version;
-    sha256 = "1qdaql4mknhzvl2qi1pyw4c820lqb7lg07gblh0wzfk4f7h8hddx";
+    hash = "sha256-9VSrqCjC8U3js1gqjl5QFctWYECATxN+AdfMdHLxYUY=";
   };
 
   buildInputs = [
diff --git a/pkgs/desktops/cinnamon/cinnamon-screensaver/default.nix b/pkgs/desktops/cinnamon/cinnamon-screensaver/default.nix
index 0e8f6dbf8c3d..39dee473cc5a 100644
--- a/pkgs/desktops/cinnamon/cinnamon-screensaver/default.nix
+++ b/pkgs/desktops/cinnamon/cinnamon-screensaver/default.nix
@@ -23,27 +23,19 @@
 , xapps
 , xorg
 , iso-flags-png-320x420
-, fetchpatch
 }:
 
 stdenv.mkDerivation rec {
   pname = "cinnamon-screensaver";
-  version = "4.6.0";
+  version = "4.8.1";
 
   src = fetchFromGitHub {
     owner = "linuxmint";
     repo = pname;
     rev = version;
-    sha256 = "068lh6wcmznfyvny7hx83q2rf4j96b6mv4a5v79y02k9110m7bsm";
+    hash = "sha256-gvSGxSYKnRqJhj2unRYRHp6qGw/O9SxKPzhw5xjCSSQ=";
   };
 
-  patches = [
-    (fetchpatch {
-      url = "https://github.com/linuxmint/cinnamon-screensaver/pull/349/commits/4a9e5715f406bf2ca1aacddd5fd8f830102a423c.patch";
-      sha256 = "0fmkmskry4c88zcw0i8vsmh6q14k3m937hqi77p5xi1p93imr46y";
-    })
-  ];
-
   nativeBuildInputs = [
     pkg-config
     wrapGAppsHook
diff --git a/pkgs/desktops/cinnamon/cinnamon-session/default.nix b/pkgs/desktops/cinnamon/cinnamon-session/default.nix
index 3d63846026a4..ba20bce4100d 100644
--- a/pkgs/desktops/cinnamon/cinnamon-session/default.nix
+++ b/pkgs/desktops/cinnamon/cinnamon-session/default.nix
@@ -27,13 +27,13 @@
 
 stdenv.mkDerivation rec {
   pname = "cinnamon-session";
-  version = "4.6.2";
+  version = "4.8.0";
 
   src = fetchFromGitHub {
     owner = "linuxmint";
     repo = pname;
     rev = version;
-    sha256 = "133vpgs0dqr16pvx5wyxhfcargn9wl14z0q99m2pn93hf6zycmsv";
+    hash = "sha256-lrwR8VSdPzHoc9MeBEQPbVfWNhPZDJ2wYizKSVpobmk=";
   };
 
   patches = [
diff --git a/pkgs/desktops/cinnamon/cinnamon-settings-daemon/csd-backlight-helper-fix.patch b/pkgs/desktops/cinnamon/cinnamon-settings-daemon/csd-backlight-helper-fix.patch
index 967ba98eb48f..a11660bdb115 100644
--- a/pkgs/desktops/cinnamon/cinnamon-settings-daemon/csd-backlight-helper-fix.patch
+++ b/pkgs/desktops/cinnamon/cinnamon-settings-daemon/csd-backlight-helper-fix.patch
@@ -1,4 +1,4 @@
-From 6d71bf9764fb81d437678a603826167850bbf453 Mon Sep 17 00:00:00 2001
+From 7fa408ebd72c9f1ff7ff4e9d7f4a811465a8a41b Mon Sep 17 00:00:00 2001
 From: =?UTF-8?q?Maciej=20Kr=C3=BCger?= <mkg20001@gmail.com>
 Date: Tue, 21 Jan 2020 03:19:28 +0100
 Subject: [PATCH] fix: use an impure path to csd-backlight-helper to fix
@@ -6,35 +6,35 @@ Subject: [PATCH] fix: use an impure path to csd-backlight-helper to fix
 
 ---
  plugins/power/csd-power-manager.c                             | 4 ++--
- .../org.cinnamon.settings-daemon.plugins.power.policy.in.in   | 2 +-
+ .../org.cinnamon.settings-daemon.plugins.power.policy.in      | 2 +-
  2 files changed, 3 insertions(+), 3 deletions(-)
 
 diff --git a/plugins/power/csd-power-manager.c b/plugins/power/csd-power-manager.c
-index b24c456..212c47e 100755
+index 33f4489..84dd98b 100644
 --- a/plugins/power/csd-power-manager.c
 +++ b/plugins/power/csd-power-manager.c
-@@ -2519,7 +2519,7 @@ backlight_helper_get_value (const gchar *argument, CsdPowerManager* manager,
+@@ -2529,7 +2529,7 @@ backlight_helper_get_value (const gchar *argument, CsdPowerManager* manager,
  #endif
-
+ 
          /* get the data */
 -        command = g_strdup_printf (LIBEXECDIR "/csd-backlight-helper --%s %s",
 +        command = g_strdup_printf ("/run/current-system/sw/bin/cinnamon-settings-daemon/csd-backlight-helper --%s %s",
                                     argument,
                                     manager->priv->backlight_helper_preference_args);
          ret = g_spawn_command_line_sync (command,
-@@ -2609,7 +2609,7 @@ backlight_helper_set_value (const gchar *argument,
+@@ -2619,7 +2619,7 @@ backlight_helper_set_value (const gchar *argument,
  #endif
-
+ 
          /* get the data */
 -        command = g_strdup_printf ("pkexec " LIBEXECDIR "/csd-backlight-helper --%s %i %s",
 +        command = g_strdup_printf ("pkexec " "/run/current-system/sw/bin/cinnamon-settings-daemon/csd-backlight-helper --%s %i %s",
                                     argument, value,
                                     manager->priv->backlight_helper_preference_args);
          ret = g_spawn_command_line_sync (command,
-diff --git a/plugins/power/org.cinnamon.settings-daemon.plugins.power.policy.in.in b/plugins/power/org.cinnamon.settings-daemon.plugins.power.policy.in.in
-index 2c44e62..c0a2348 100755
---- a/plugins/power/org.cinnamon.settings-daemon.plugins.power.policy.in.in
-+++ b/plugins/power/org.cinnamon.settings-daemon.plugins.power.policy.in.in
+diff --git a/plugins/power/org.cinnamon.settings-daemon.plugins.power.policy.in b/plugins/power/org.cinnamon.settings-daemon.plugins.power.policy.in
+index 504f017..3569e8c 100644
+--- a/plugins/power/org.cinnamon.settings-daemon.plugins.power.policy.in
++++ b/plugins/power/org.cinnamon.settings-daemon.plugins.power.policy.in
 @@ -25,7 +25,7 @@
        <allow_inactive>no</allow_inactive>
        <allow_active>yes</allow_active>
@@ -42,7 +42,8 @@ index 2c44e62..c0a2348 100755
 -    <annotate key="org.freedesktop.policykit.exec.path">@libexecdir@/csd-backlight-helper</annotate>
 +    <annotate key="org.freedesktop.policykit.exec.path">/run/current-system/sw/bin/cinnamon-settings-daemon/csd-backlight-helper</annotate>
    </action>
-
+ 
  </policyconfig>
---
-2.24.1
+-- 
+2.30.0
+
diff --git a/pkgs/desktops/cinnamon/cinnamon-settings-daemon/default.nix b/pkgs/desktops/cinnamon/cinnamon-settings-daemon/default.nix
index c5bae4e57671..3df8760c8582 100644
--- a/pkgs/desktops/cinnamon/cinnamon-settings-daemon/default.nix
+++ b/pkgs/desktops/cinnamon/cinnamon-settings-daemon/default.nix
@@ -1,12 +1,9 @@
 { fetchFromGitHub
-, autoconf-archive
-, autoreconfHook
 , cinnamon-desktop
 , colord
 , glib
 , gsettings-desktop-schemas
 , gtk3
-, intltool
 , lcms2
 , libcanberra-gtk3
 , libgnomekbd
@@ -29,11 +26,15 @@
 , tzdata
 , nss
 , libgudev
+, meson
+, ninja
+, dbus
+, dbus-glib
 }:
 
 stdenv.mkDerivation rec {
   pname = "cinnamon-settings-daemon";
-  version = "4.6.4";
+  version = "4.8.5";
 
   /* csd-power-manager.c:50:10: fatal error: csd-power-proxy.h: No such file or directory
    #include "csd-power-proxy.h"
@@ -48,14 +49,15 @@ stdenv.mkDerivation rec {
     owner = "linuxmint";
     repo = pname;
     rev = version;
-    sha256 = "1xcjzjfwnzvkv9jiyw8adsjyhz92almzhyfwb91115774zgqnb7m";
+    hash = "sha256-PAWVTjGFs8yKXgNQ2ucDnEDS+n7bp2n3lhGl9gHXfdQ=";
   };
 
   patches = [
     ./csd-backlight-helper-fix.patch
+    ./use-sane-install-dir.patch
   ];
 
-  NIX_CFLAGS_COMPILE = "-I${glib.dev}/include/gio-unix-2.0"; # TODO: https://github.com/NixOS/nixpkgs/issues/36468
+  mesonFlags = [ "-Dc_args=-I${glib.dev}/include/gio-unix-2.0" ];
 
   buildInputs = [
     cinnamon-desktop
@@ -85,13 +87,14 @@ stdenv.mkDerivation rec {
     fontconfig
     nss
     libgudev
+    dbus
+    dbus-glib
   ];
 
   nativeBuildInputs = [
-    autoconf-archive
-    autoreconfHook
+    meson
+    ninja
     wrapGAppsHook
-    intltool
     pkg-config
   ];
 
diff --git a/pkgs/desktops/cinnamon/cinnamon-settings-daemon/use-sane-install-dir.patch b/pkgs/desktops/cinnamon/cinnamon-settings-daemon/use-sane-install-dir.patch
new file mode 100644
index 000000000000..d980431f81b9
--- /dev/null
+++ b/pkgs/desktops/cinnamon/cinnamon-settings-daemon/use-sane-install-dir.patch
@@ -0,0 +1,27 @@
+From be57c01e6595a8e08ecc17de298e30640b532f11 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Maciej=20Kr=C3=BCger?= <mkg20001@gmail.com>
+Date: Sat, 6 Feb 2021 13:55:03 +0100
+Subject: [PATCH] use sane install-dir
+
+---
+ meson.build | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/meson.build b/meson.build
+index 0e11d50..54f4637 100644
+--- a/meson.build
++++ b/meson.build
+@@ -156,8 +156,8 @@ subdir('cinnamon-settings-daemon')
+ subdir('plugins')
+ 
+ install_subdir(
+-    'files',
+-    install_dir: '/',
++    'files/usr',
++    install_dir: get_option('prefix'),
+     strip_directory: true,
+ )
+ 
+-- 
+2.30.0
+
diff --git a/pkgs/desktops/cinnamon/cinnamon-translations/default.nix b/pkgs/desktops/cinnamon/cinnamon-translations/default.nix
index 24bb38228688..dafb5f4b3fea 100644
--- a/pkgs/desktops/cinnamon/cinnamon-translations/default.nix
+++ b/pkgs/desktops/cinnamon/cinnamon-translations/default.nix
@@ -1,17 +1,18 @@
-{ lib, stdenv
+{ lib
+, stdenv
 , fetchFromGitHub
 , gettext
 }:
 
 stdenv.mkDerivation rec {
   pname = "cinnamon-translations";
-  version = "4.6.2";
+  version = "4.8.3";
 
   src = fetchFromGitHub {
     owner = "linuxmint";
     repo = pname;
     rev = version;
-    sha256 = "0zaghha62ibhg3rir6mrfy1z3v7p7v83b6glhmj9s51nxd86fyv6";
+    hash = "sha256-o/JFfwloXLUOy9YQzHtMCuzK7yBp/G43VS/RguxiTPY=";
   };
 
   nativeBuildInputs = [
diff --git a/pkgs/desktops/cinnamon/cjs/default.nix b/pkgs/desktops/cinnamon/cjs/default.nix
index 184c14381965..3c01d0039372 100644
--- a/pkgs/desktops/cinnamon/cjs/default.nix
+++ b/pkgs/desktops/cinnamon/cjs/default.nix
@@ -2,7 +2,8 @@
 , fetchFromGitHub
 , gobject-introspection
 , pkg-config
-, lib, stdenv
+, lib
+, stdenv
 , wrapGAppsHook
 , python3
 , cairo
@@ -27,14 +28,14 @@
 }:
 
 stdenv.mkDerivation rec {
-  pname = "cjs-unstable";
-  version = "2020-10-19";
+  pname = "cjs";
+  version = "4.8.2";
 
   src = fetchFromGitHub {
     owner = "linuxmint";
     repo = "cjs";
-    rev = "befc11adb5ba10681464e6fa81b1a79f108ce61c";
-    hash = "sha256-F2t8uKV2r29NxX2+3mYp5x1bug2lwihJZTK1dSS8rPg=";
+    rev = version;
+    hash = "sha256-6+zlWL0DmyP+RFp1ECA4XGbgYUlsMqqyTd6z46w99Ug=";
   };
 
   outputs = [ "out" "dev" ];
diff --git a/pkgs/desktops/cinnamon/muffin/default.nix b/pkgs/desktops/cinnamon/muffin/default.nix
index 93079e21d3d1..2df5f875b41c 100644
--- a/pkgs/desktops/cinnamon/muffin/default.nix
+++ b/pkgs/desktops/cinnamon/muffin/default.nix
@@ -35,13 +35,13 @@
 
 stdenv.mkDerivation rec {
   pname = "muffin";
-  version = "4.6.3";
+  version = "4.8.1";
 
   src = fetchFromGitHub {
     owner = "linuxmint";
     repo = pname;
     rev = version;
-    sha256 = "1p8irzf20wari1id5rfx5sypywih1jsrmn0f83zlyhc5fxg02r5p";
+    hash = "sha256-zRW+hnoaKKTe4zIJpY1D0Ahc8k5zRbvYBF5Y4vZ6Rbs=";
   };
 
   buildInputs = [
diff --git a/pkgs/desktops/cinnamon/nemo/default.nix b/pkgs/desktops/cinnamon/nemo/default.nix
index 5017c1ce7d50..79a5e09c4ffc 100644
--- a/pkgs/desktops/cinnamon/nemo/default.nix
+++ b/pkgs/desktops/cinnamon/nemo/default.nix
@@ -20,7 +20,7 @@
 
 stdenv.mkDerivation rec {
   pname = "nemo";
-  version = "4.6.5";
+  version = "4.8.4";
 
   # TODO: add plugins support (see https://github.com/NixOS/nixpkgs/issues/78327)
 
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
     owner = "linuxmint";
     repo = pname;
     rev = version;
-    sha256 = "04rgdph9pxdj5wzzv2i0pgyhg3s74nh9jf1ry9z6v5bvv222ili4";
+    hash = "sha256-OOPjxYrYUd1PIRxRgHwYbm7ennmAChbXqcM8MEPKXO0=";
   };
 
   outputs = [ "out" "dev" ];
diff --git a/pkgs/desktops/cinnamon/warpinator/default.nix b/pkgs/desktops/cinnamon/warpinator/default.nix
index efcd20457b32..8b316d37f587 100644
--- a/pkgs/desktops/cinnamon/warpinator/default.nix
+++ b/pkgs/desktops/cinnamon/warpinator/default.nix
@@ -17,7 +17,6 @@ python3.pkgs.buildPythonApplication rec  {
   version = "1.0.8";
 
   format = "other";
-  doCheck = false;
 
   src = fetchFromGitHub {
     owner = "linuxmint";
diff --git a/pkgs/development/compilers/gcc/common/configure-flags.nix b/pkgs/development/compilers/gcc/common/configure-flags.nix
index fc4fbb34c502..7f7a40f3368d 100644
--- a/pkgs/development/compilers/gcc/common/configure-flags.nix
+++ b/pkgs/development/compilers/gcc/common/configure-flags.nix
@@ -176,6 +176,7 @@ let
 
     # Platform-specific flags
     ++ lib.optional (targetPlatform == hostPlatform && targetPlatform.isx86_32) "--with-arch=${stdenv.hostPlatform.parsed.cpu.name}"
+    ++ lib.optional targetPlatform.isNetBSD "--disable-libssp" # Provided by libc.
     ++ lib.optionals hostPlatform.isSunOS [
       "--enable-long-long" "--enable-libssp" "--enable-threads=posix" "--disable-nls" "--enable-__cxa_atexit"
       # On Illumos/Solaris GNU as is preferred
diff --git a/pkgs/development/compilers/haxe/default.nix b/pkgs/development/compilers/haxe/default.nix
index 73b82ff48dbf..cd64c282b74c 100644
--- a/pkgs/development/compilers/haxe/default.nix
+++ b/pkgs/development/compilers/haxe/default.nix
@@ -13,7 +13,8 @@ let
       sha
       dune_2
       luv
-      ocaml_extlib
+      (if lib.versionAtLeast version "4.2"
+      then ocaml_extlib else ocaml_extlib-1-7-7)
     ] else with ocaml-ng.ocamlPackages_4_05; [
       ocaml
       camlp4
@@ -125,6 +126,14 @@ in {
       sed -i -re 's!(let +prefix_path += +).*( +in)!\1"'"$out/"'"\2!' src/main.ml
     '';
   };
+  haxe_4_0 = generic {
+    version = "4.0.5";
+    sha256 = "0f534pchdx0m057ixnk07ab4s518ica958pvpd0vfjsrxg5yjkqa";
+  };
+  haxe_4_1 = generic {
+    version = "4.1.5";
+    sha256 = "0rns6d28qzkbai6yyws08yzbyvxfn848nj0fsji7chdi0y7pzzj0";
+  };
   haxe_4_2 = generic {
     version = "4.2.1";
     sha256 = "sha256-0j6M21dh8DB1gC/bPYNJrVuDbJyqQbP+61ItO5RBUcA=";
diff --git a/pkgs/development/libraries/boringssl/default.nix b/pkgs/development/libraries/boringssl/default.nix
index aa3eeef48a55..f8c27f96dcc1 100644
--- a/pkgs/development/libraries/boringssl/default.nix
+++ b/pkgs/development/libraries/boringssl/default.nix
@@ -1,22 +1,39 @@
-{ lib, stdenv, fetchgit, cmake, perl, go }:
+{ lib
+, stdenv
+, fetchgit
+, cmake
+, ninja
+, perl
+, buildGoModule
+}:
 
 # reference: https://boringssl.googlesource.com/boringssl/+/2661/BUILDING.md
-stdenv.mkDerivation {
+buildGoModule {
   pname = "boringssl";
-  version = "2019-12-04";
+  version = "2021-04-18";
 
   src = fetchgit {
     url    = "https://boringssl.googlesource.com/boringssl";
-    rev    = "243b5cc9e33979ae2afa79eaa4e4c8d59db161d4";
-    sha256 = "1ak27dln0zqy2vj4llqsb99g03sk0sg25wlp09b58cymrh3gccvl";
+    rev    = "468cde90ca58421d63f4dfeaebcf8bb3fccb4127";
+    sha256 = "0gaqcbvp6r5fq265mckmg0i0rjab0bhxkxcvfxp3ar5dm7q88w39";
   };
 
-  nativeBuildInputs = [ cmake perl go ];
+  nativeBuildInputs = [ cmake ninja perl ];
 
-  makeFlags = [ "GOCACHE=$(TMPDIR)/go-cache" ];
+  vendorSha256 = "sha256-pQpattmS9VmO3ZIQUFn66az8GSmB4IvYhTTCFn6SUmo=";
+
+  # hack to get both go and cmake configure phase
+  # (if we use postConfigure then cmake will loop runHook postConfigure)
+  preBuild = ''
+    cmakeConfigurePhase
+  '';
+
+  buildPhase = ''
+    ninjaBuildPhase
+  '';
 
   # CMAKE_OSX_ARCHITECTURES is set to x86_64 by Nix, but it confuses boringssl on aarch64-linux.
-  cmakeFlags = lib.optionals (stdenv.isLinux) [ "-DCMAKE_OSX_ARCHITECTURES=" ];
+  cmakeFlags = [ "-GNinja" ] ++ lib.optionals (stdenv.isLinux) [ "-DCMAKE_OSX_ARCHITECTURES=" ];
 
   installPhase = ''
     mkdir -p $bin/bin $out/include $out/lib
diff --git a/pkgs/development/libraries/mpir/default.nix b/pkgs/development/libraries/mpir/default.nix
index 7f7df407e4e8..5e68ad80fc2e 100644
--- a/pkgs/development/libraries/mpir/default.nix
+++ b/pkgs/development/libraries/mpir/default.nix
@@ -7,11 +7,11 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ m4 which yasm ];
 
   src = fetchurl {
-    url = "http://mpir.org/mpir-${version}.tar.bz2";
+    url = "https://mpir.org/mpir-${version}.tar.bz2";
     sha256 = "1fvmhrqdjs925hzr2i8bszm50h00gwsh17p2kn2pi51zrxck9xjj";
   };
 
-  configureFlags = [ "--enable-cxx" ];
+  configureFlags = [ "--enable-cxx" "--enable-fat" ];
 
   meta = {
     inherit version;
@@ -19,8 +19,8 @@ stdenv.mkDerivation rec {
     license = lib.licenses.lgpl3Plus;
     maintainers = [lib.maintainers.raskin];
     platforms = lib.platforms.unix;
-    downloadPage = "http://mpir.org/downloads.html";
-    homepage = "http://mpir.org/";
+    downloadPage = "https://mpir.org/downloads.html";
+    homepage = "https://mpir.org/";
     updateWalker = true;
   };
 }
diff --git a/pkgs/development/ocaml-modules/extlib/1.7.7.nix b/pkgs/development/ocaml-modules/extlib/1.7.7.nix
new file mode 100644
index 000000000000..3314ebcb9b5d
--- /dev/null
+++ b/pkgs/development/ocaml-modules/extlib/1.7.7.nix
@@ -0,0 +1,11 @@
+# Older version of extlib for Haxe 4.0 and 4.1.
+# May be replaceable by the next extlib + extlib-base64 release.
+{ fetchurl, ocaml_extlib }:
+
+ocaml_extlib.overrideAttrs (_: rec {
+  version = "1.7.7";
+  src = fetchurl {
+    url = "https://github.com/ygrek/ocaml-extlib/releases/download/${version}/extlib-${version}.tar.gz";
+    sha256 = "1sxmzc1mx3kg62j8kbk0dxkx8mkf1rn70h542cjzrziflznap0s1";
+  };
+})
diff --git a/pkgs/development/python-modules/aioimaplib/default.nix b/pkgs/development/python-modules/aioimaplib/default.nix
index df9748f1c849..a94818aee5c5 100644
--- a/pkgs/development/python-modules/aioimaplib/default.nix
+++ b/pkgs/development/python-modules/aioimaplib/default.nix
@@ -8,22 +8,19 @@
 , nose
 , pyopenssl
 , pytestCheckHook
-, pythonAtLeast
 , pytz
 , tzlocal
 }:
 
 buildPythonPackage rec {
   pname = "aioimaplib";
-  version = "0.8.0";
-
-  disabled = pythonAtLeast "3.9";
+  version = "0.9.0";
 
   src = fetchFromGitHub {
     owner = "bamthomas";
     repo = pname;
     rev = version;
-    sha256 = "sha256-ume25EwLNB6szokHXonDXHGKVK76CiZYOBXVUf37/x8=";
+    sha256 = "sha256-xxZAeJDuqrPv4kGgDr0ypFuZJk1zcs/bmgeEzI0jpqY=";
   };
 
   checkInputs = [
diff --git a/pkgs/development/python-modules/pymetno/default.nix b/pkgs/development/python-modules/pymetno/default.nix
index b3d91c595d80..5e0131352c34 100644
--- a/pkgs/development/python-modules/pymetno/default.nix
+++ b/pkgs/development/python-modules/pymetno/default.nix
@@ -9,18 +9,29 @@
 
 buildPythonPackage rec {
   pname = "PyMetno";
-  version = "0.8.1";
+  version = "0.8.2";
+  format = "setuptools";
 
   src = fetchFromGitHub {
     repo = pname;
     owner = "Danielhiversen";
     rev = version;
-    sha256 = "1jngf0mbn5hn166pqh1ga5snwwvv7n5kv1k9kaksrfibixkvpw6h";
+    sha256 = "0b1zm60yqj1mivc3zqw2qm9rqh8cbmx0r58jyyvm3pxzq5cafdg5";
   };
 
-  propagatedBuildInputs = [ aiohttp async-timeout pytz xmltodict ];
+  propagatedBuildInputs = [
+    aiohttp
+    async-timeout
+    pytz
+    xmltodict
+  ];
 
-  pythonImportsCheck = [ "metno"];
+  pythonImportsCheck = [
+    "metno"
+  ];
+
+  # no tests
+  doCheck = false;
 
   meta = with lib; {
     description = "A library to communicate with the met.no api";
diff --git a/pkgs/development/python-modules/slob/default.nix b/pkgs/development/python-modules/slob/default.nix
index 09359d2798d8..72af69e3e7c2 100644
--- a/pkgs/development/python-modules/slob/default.nix
+++ b/pkgs/development/python-modules/slob/default.nix
@@ -8,14 +8,14 @@
 
 buildPythonPackage {
   pname = "slob";
-  version = "unstable-2016-11-03";
+  version = "unstable-2020-06-26";
   disabled = !isPy3k;
 
   src = fetchFromGitHub {
     owner = "itkach";
     repo = "slob";
-    rev = "d1ed71e4778729ecdfc2fe27ed783689a220a6cd";
-    sha256 = "1r510s4r124s121wwdm9qgap6zivlqqxrhxljz8nx0kv0cdyypi5";
+    rev = "018588b59999c5c0eb42d6517fdb84036f3880cb";
+    sha256 = "01195hphjnlcvgykw143rf06s6y955sjc1r825a58vhjx7hj54zh";
   };
 
   propagatedBuildInputs = [ PyICU ];
@@ -24,10 +24,11 @@ buildPythonPackage {
     ${python.interpreter} -m unittest slob
   '';
 
+  pythonImportsCheck = [ "slob" ];
+
   meta = with lib; {
     homepage = "https://github.com/itkach/slob/";
     description = "Reference implementation of the slob (sorted list of blobs) format";
-    license = licenses.gpl3;
+    license = licenses.gpl3Only;
   };
-
 }
diff --git a/pkgs/development/tools/gops/default.nix b/pkgs/development/tools/gops/default.nix
index ff9b2064cec9..d23aa71a8abe 100644
--- a/pkgs/development/tools/gops/default.nix
+++ b/pkgs/development/tools/gops/default.nix
@@ -2,13 +2,13 @@
 
 buildGoModule rec {
   pname = "gops";
-  version = "0.3.17";
+  version = "0.3.18";
 
   src = fetchFromGitHub {
     owner = "google";
     repo = "gops";
     rev = "v${version}";
-    sha256 = "1l0k1v2wwwdrwwznrdq2ivbrl5z3hxa89xm89jlaglkd7jjg74zk";
+    sha256 = "0534jyravpsj73lgdmw6fns1qaqiw401jlfk04wa0as5sv09rfhy";
   };
 
   vendorSha256 = null;
diff --git a/pkgs/misc/screensavers/multilockscreen/default.nix b/pkgs/misc/screensavers/multilockscreen/default.nix
index 56f5c82fe301..3049f3ba2a76 100644
--- a/pkgs/misc/screensavers/multilockscreen/default.nix
+++ b/pkgs/misc/screensavers/multilockscreen/default.nix
@@ -16,13 +16,13 @@ let
 in
 stdenv.mkDerivation rec {
   pname = "multilockscreen";
-  version = "1.0.0";
+  version = "1.1.0";
 
   src = fetchFromGitHub {
     owner = "jeffmhubbard";
     repo = pname;
     rev = "v${version}";
-    sha256 = "0gmnrq7ibbhiwsn7mfi2r71fwm6nvhiwf4wsyz44cscm474z83p0";
+    sha256 = "1vdai1ymkzlkh5l69s8zpyj2klzm8zyak00vd4p7lcldxfj861ig";
   };
 
   nativeBuildInputs = [ makeWrapper ];
diff --git a/pkgs/os-specific/linux/kernel/common-config.nix b/pkgs/os-specific/linux/kernel/common-config.nix
index 213f344add1e..5cece836b73e 100644
--- a/pkgs/os-specific/linux/kernel/common-config.nix
+++ b/pkgs/os-specific/linux/kernel/common-config.nix
@@ -710,7 +710,6 @@ let
       MD                 = yes;     # Device mapper (RAID, LVM, etc.)
 
       # Enable initrd support.
-      BLK_DEV_RAM       = yes;
       BLK_DEV_INITRD    = yes;
 
       PM_TRACE_RTC         = no; # Disable some expensive (?) features.
diff --git a/pkgs/os-specific/linux/kernel/linux-lqx.nix b/pkgs/os-specific/linux/kernel/linux-lqx.nix
index 5e4d752f1d76..8662fbbd18bc 100644
--- a/pkgs/os-specific/linux/kernel/linux-lqx.nix
+++ b/pkgs/os-specific/linux/kernel/linux-lqx.nix
@@ -1,7 +1,7 @@
 { lib, fetchFromGitHub, buildLinux, linux_zen, ... } @ args:
 
 let
-  version = "5.11.14";
+  version = "5.11.15";
   suffix = "lqx1";
 in
 
@@ -14,7 +14,7 @@ buildLinux (args // {
     owner = "zen-kernel";
     repo = "zen-kernel";
     rev = "v${version}-${suffix}";
-    sha256 = "0kgr6c3mpc9nmg4m2qfk58bji95paq3jwqsyl3h55xk40gshka32";
+    sha256 = "1dwibknj4q8cd3mim679mrb4j8yi7p4q9qjcb4rwvw0yzgxmz3lv";
   };
 
   extraMeta = {
diff --git a/pkgs/os-specific/linux/kernel/linux-zen.nix b/pkgs/os-specific/linux/kernel/linux-zen.nix
index d97e4d6aa0e7..92aaa9574580 100644
--- a/pkgs/os-specific/linux/kernel/linux-zen.nix
+++ b/pkgs/os-specific/linux/kernel/linux-zen.nix
@@ -1,7 +1,7 @@
 { lib, fetchFromGitHub, buildLinux, ... } @ args:
 
 let
-  version = "5.11.14";
+  version = "5.11.15";
   suffix = "zen1";
 in
 
@@ -14,7 +14,7 @@ buildLinux (args // {
     owner = "zen-kernel";
     repo = "zen-kernel";
     rev = "v${version}-${suffix}";
-    sha256 = "1n49h9s3jyvrdy662b6j9xjbmhxxdczk980vrlgs09fg5ny0k59a";
+    sha256 = "0n9wm0lpwkqd79112k03lxp4hc898nvs2jjw3hxzggn5wk4i2dz9";
   };
 
   extraMeta = {
diff --git a/pkgs/servers/home-assistant/component-packages.nix b/pkgs/servers/home-assistant/component-packages.nix
index 973b73d4d16a..97aa0d5c64a4 100644
--- a/pkgs/servers/home-assistant/component-packages.nix
+++ b/pkgs/servers/home-assistant/component-packages.nix
@@ -2,7 +2,7 @@
 # Do not edit!
 
 {
-  version = "2021.4.5";
+  version = "2021.4.6";
   components = {
     "abode" = ps: with ps; [ abodepy ];
     "accuweather" = ps: with ps; [ accuweather ];
diff --git a/pkgs/servers/home-assistant/default.nix b/pkgs/servers/home-assistant/default.nix
index 5126a8a4fbf9..17ddef151dfd 100644
--- a/pkgs/servers/home-assistant/default.nix
+++ b/pkgs/servers/home-assistant/default.nix
@@ -23,7 +23,7 @@ let
     # Override the version of some packages pinned in Home Assistant's setup.py
 
     # Pinned due to API changes in astral>=2.0, required by the sun/moon plugins
-    # https://github.com/home-assistant/core/issues/36636
+    # https://github.com/home-assistant/core/pull/48573; Remove >= 2021.5
     (mkOverride "astral" "1.10.1"
       "d2a67243c4503131c856cafb1b1276de52a86e5b8a1d507b7e08bee51cb67bf1")
 
@@ -51,6 +51,7 @@ let
       "sha256-8bxn27DU1XUQUxQFJklEge29DHx1DMu7pJG4hVE1jDU=")
 
     # Pinned due to API changes in pylilterbot>=2021.3.0
+    # https://github.com/home-assistant/core/pull/48300; Remove >= 2021.5
     (self: super: {
       pylitterbot = super.pylitterbot.overridePythonAttrs (oldAttrs: rec {
         version = "2021.2.8";
@@ -116,7 +117,7 @@ let
   extraBuildInputs = extraPackages py.pkgs;
 
   # Don't forget to run parse-requirements.py after updating
-  hassVersion = "2021.4.5";
+  hassVersion = "2021.4.6";
 
 in with py.pkgs; buildPythonApplication rec {
   pname = "homeassistant";
@@ -135,7 +136,7 @@ in with py.pkgs; buildPythonApplication rec {
     owner = "home-assistant";
     repo = "core";
     rev = version;
-    sha256 = "106d1n9z8pfcnqm594vkhczrrrjap801w6fdr0psv5vhdxrqh4sj";
+    sha256 = "1s1slwcqls2prz9kgyhggs8xi3x7ghwdi33j983kvpg0gva7d2f0";
   };
 
   # leave this in, so users don't have to constantly update their downstream patch handling
diff --git a/pkgs/servers/http/nginx/quic.nix b/pkgs/servers/http/nginx/quic.nix
new file mode 100644
index 000000000000..062520a3d13e
--- /dev/null
+++ b/pkgs/servers/http/nginx/quic.nix
@@ -0,0 +1,21 @@
+{ callPackage, fetchhg, boringssl, ... } @ args:
+
+callPackage ./generic.nix args {
+  src = fetchhg {
+    url = "https://hg.nginx.org/nginx-quic";
+    rev = "47a43b011dec"; # branch=quic
+    sha256 = "1d4d1v4zbnf5qlfl79pi7sficn1h7zm6kk7llm24yyhlsvssz10x";
+  };
+
+  preConfigure = ''
+    ln -s auto/configure configure
+  '';
+
+  configureFlags = [
+    "--with-http_v3_module"
+    "--with-http_quic_module"
+    "--with-stream_quic_module"
+  ];
+
+  version = "quic";
+}
diff --git a/pkgs/servers/mxisd/default.nix b/pkgs/servers/mxisd/default.nix
deleted file mode 100644
index 48f49b57fca6..000000000000
--- a/pkgs/servers/mxisd/default.nix
+++ /dev/null
@@ -1,70 +0,0 @@
-{ lib, stdenv, fetchFromGitHub, jre, git, gradle_6, perl, makeWrapper }:
-
-let
-  name = "mxisd-${version}";
-  version = "1.4.6";
-  rev = "6e9601cb3a18281857c3cefd20ec773023b577d2";
-
-  src = fetchFromGitHub {
-    inherit rev;
-    owner = "kamax-matrix";
-    repo = "mxisd";
-    sha256 = "07gpdgbz281506p2431qn92bvdza6ap3jfq5b7xdm7nwrry80pzd";
-  };
-
-
-  deps = stdenv.mkDerivation {
-    name = "${name}-deps";
-    inherit src;
-    nativeBuildInputs = [ gradle_6 perl git ];
-
-    buildPhase = ''
-      export MXISD_BUILD_VERSION=${rev}
-      export GRADLE_USER_HOME=$(mktemp -d);
-      gradle --no-daemon build -x test
-    '';
-
-     # perl code mavenizes pathes (com.squareup.okio/okio/1.13.0/a9283170b7305c8d92d25aff02a6ab7e45d06cbe/okio-1.13.0.jar -> com/squareup/okio/okio/1.13.0/okio-1.13.0.jar)
-    installPhase = ''
-      find $GRADLE_USER_HOME/caches/modules-2 -type f -regex '.*\.\(jar\|pom\)' \
-        | perl -pe 's#(.*/([^/]+)/([^/]+)/([^/]+)/[0-9a-f]{30,40}/([^/\s]+))$# ($x = $2) =~ tr|\.|/|; "install -Dm444 $1 \$out/$x/$3/$4/$5" #e' \
-        | sh
-    '';
-
-    dontStrip = true;
-
-    outputHashAlgo = "sha256";
-    outputHashMode = "recursive";
-    outputHash = "0z9f3w7lfdvbk26kyckpbgas7mi98rjghck9w0kvx3r7k48p5vnv";
-  };
-
-in
-stdenv.mkDerivation {
-  inherit name src version;
-  nativeBuildInputs = [ gradle_6 perl makeWrapper ];
-  buildInputs = [ jre ];
-
-  patches = [ ./0001-gradle.patch ];
-
-  buildPhase = ''
-    export MXISD_BUILD_VERSION=${rev}
-    export GRADLE_USER_HOME=$(mktemp -d)
-
-    sed -ie "s#REPLACE#mavenLocal(); maven { url '${deps}' }#g" build.gradle
-    gradle --offline --no-daemon build -x test
-  '';
-
-  installPhase = ''
-    install -D build/libs/source.jar $out/lib/mxisd.jar
-    makeWrapper ${jre}/bin/java $out/bin/mxisd --add-flags "-jar $out/lib/mxisd.jar"
-  '';
-
-  meta = with lib; {
-    description = "a federated matrix identity server";
-    homepage = "https://github.com/kamax-matrix/mxisd";
-    license = licenses.agpl3;
-    maintainers = with maintainers; [ mguentner ];
-    platforms = platforms.all;
-  };
-
-}
diff --git a/pkgs/stdenv/generic/default.nix b/pkgs/stdenv/generic/default.nix
index 8ab9d7344617..cb2b2bc51e9c 100644
--- a/pkgs/stdenv/generic/default.nix
+++ b/pkgs/stdenv/generic/default.nix
@@ -139,7 +139,7 @@ let
 
       # Utility flags to test the type of platform.
       inherit (hostPlatform)
-        isDarwin isLinux isSunOS isCygwin isFreeBSD isOpenBSD
+        isDarwin isLinux isSunOS isCygwin isBSD isFreeBSD isOpenBSD
         isi686 isx86_32 isx86_64
         is32bit is64bit
         isAarch32 isAarch64 isMips isBigEndian;
diff --git a/pkgs/tools/admin/cjdns-tools/default.nix b/pkgs/tools/admin/cjdns-tools/default.nix
new file mode 100644
index 000000000000..2468d329548c
--- /dev/null
+++ b/pkgs/tools/admin/cjdns-tools/default.nix
@@ -0,0 +1,46 @@
+{ stdenv
+, cjdns
+, nodejs
+, makeWrapper
+, lib
+}:
+
+stdenv.mkDerivation {
+  pname = "cjdns-tools";
+  version = cjdns.version;
+
+  src = cjdns.src;
+
+  buildInputs = [
+    nodejs
+  ];
+
+  nativeBuildInputs = [
+    makeWrapper
+  ];
+
+  buildPhase = ''
+    patchShebangs tools
+
+    sed -e "s|'password': 'NONE'|'password': Fs.readFileSync('/etc/cjdns.keys').toString().split('\\\\n').map(v => v.split('=')).filter(v => v[0] === 'CJDNS_ADMIN_PASSWORD').map(v => v[1])[0]|g" \
+      -i tools/lib/cjdnsadmin/cjdnsadmin.js
+  '';
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cat ${./wrapper.sh} | sed "s|@@out@@|$out|g" > $out/bin/cjdns-tools
+    chmod +x $out/bin/cjdns-tools
+
+    cp -r tools $out/tools
+    find $out/tools -maxdepth 1 -type f -exec chmod -v a+x {} \;
+    cp -r node_modules $out/node_modules
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/cjdelisle/cjdns";
+    description = "Tools for cjdns managment";
+    license = licenses.gpl3Plus;
+    maintainers = with maintainers; [ mkg20001 ];
+    platforms = platforms.linux;
+  };
+}
diff --git a/pkgs/tools/admin/cjdns-tools/wrapper.sh b/pkgs/tools/admin/cjdns-tools/wrapper.sh
new file mode 100644
index 000000000000..2e8d85b1dd91
--- /dev/null
+++ b/pkgs/tools/admin/cjdns-tools/wrapper.sh
@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+
+export PATH="@@out@@/tools:$PATH"
+
+set -eo pipefail
+
+if ! cat /etc/cjdns.keys >/dev/null 2>&1; then
+  echo "ERROR: No permission to read /etc/cjdns.keys (use sudo)" >&2
+  exit 1
+fi
+
+if [[ -z $1 ]]; then
+  echo "Cjdns admin"
+
+  echo "Usage: $0 <command> <args..>"
+
+  echo
+  echo "Commands:" $(find @@out@@/tools -maxdepth 1 -type f | sed -r "s|.+/||g")
+
+  _sh=$(which sh)
+  PATH="@@out@@/tools" PS1="cjdns\$ " "$_sh"
+else
+  if [[ ! -e @@out@@/tools/$1 ]]; then
+    echo "ERROR: '$1' is not a valid tool" >&2
+    exit 2
+  else
+    "$@"
+  fi
+fi
diff --git a/pkgs/tools/misc/ffsend/default.nix b/pkgs/tools/misc/ffsend/default.nix
index 4c92a0be7920..4e059725f86b 100644
--- a/pkgs/tools/misc/ffsend/default.nix
+++ b/pkgs/tools/misc/ffsend/default.nix
@@ -7,7 +7,7 @@
 }:
 
 let
-  usesX11 = stdenv.isLinux || stdenv.hostPlatform.isBSD;
+  usesX11 = stdenv.isLinux || stdenv.isBSD;
 in
 
 assert (x11Support && usesX11) -> xclip != null || xsel != null;
diff --git a/pkgs/tools/networking/swagger-codegen/default.nix b/pkgs/tools/networking/swagger-codegen/default.nix
index 93fb6e1e3580..f2847703bdba 100644
--- a/pkgs/tools/networking/swagger-codegen/default.nix
+++ b/pkgs/tools/networking/swagger-codegen/default.nix
@@ -15,12 +15,12 @@ stdenv.mkDerivation rec {
     sha256 = "04wl5k8k1ziqz7k5w0g7i6zdfn41pbh3k0m8vq434k1886inf8yn";
   };
 
-  phases = [ "installPhase" ];
+  dontUnpack = true;
 
   installPhase = ''
-    install -D "$src" "$out/share/java/${jarfilename}"
+    install -D $src $out/share/java/${jarfilename}
 
-    makeWrapper ${jre}/bin/java $out/bin/swagger-codegen \
+    makeWrapper ${jre}/bin/java $out/bin/${pname} \
       --add-flags "-jar $out/share/java/${jarfilename}"
   '';
 
diff --git a/pkgs/tools/networking/swagger-codegen3/default.nix b/pkgs/tools/networking/swagger-codegen3/default.nix
new file mode 100644
index 000000000000..8fc908a1f2c2
--- /dev/null
+++ b/pkgs/tools/networking/swagger-codegen3/default.nix
@@ -0,0 +1,33 @@
+{ lib, stdenv, fetchurl, jre, makeWrapper }:
+
+stdenv.mkDerivation rec {
+  version = "3.0.25";
+  pname = "swagger-codegen";
+
+  jarfilename = "${pname}-cli-${version}.jar";
+
+  nativeBuildInputs = [
+    makeWrapper
+  ];
+
+  src = fetchurl {
+    url = "https://repo1.maven.org/maven2/io/swagger/codegen/v3/${pname}-cli/${version}/${jarfilename}";
+    sha256 = "1rdz45kmmg60fs7ddnla1xq30nah6s6rd18fqbjbjxng8r92brnd";
+  };
+
+  dontUnpack = true;
+
+  installPhase = ''
+    install -D $src $out/share/java/${jarfilename}
+
+    makeWrapper ${jre}/bin/java $out/bin/${pname}3 \
+      --add-flags "-jar $out/share/java/${jarfilename}"
+  '';
+
+  meta = with lib; {
+    description = "Allows generation of API client libraries (SDK generation), server stubs and documentation automatically given an OpenAPI Spec";
+    homepage = "https://github.com/swagger-api/swagger-codegen/tree/3.0.0";
+    license = licenses.asl20;
+    maintainers = [ maintainers._1000101 ];
+  };
+}
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index c1ec5eeb2415..cc5a50b37a9e 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -460,6 +460,7 @@ mapAliases ({
   mpv-with-scripts = self.wrapMpv self.mpv-unwrapped { }; # added 2020-05-22
   multipath_tools = multipath-tools;  # added 2016-01-21
   mupen64plus1_5 = mupen64plus; # added 2016-02-12
+  mxisd = throw "mxisd has been removed from nixpkgs as it has reached end of life, see https://github.com/kamax-matrix/mxisd/blob/535e0a5b96ab63cb0ddef90f6f42c5866407df95/EOL.md#end-of-life-notice . ma1sd may be a suitable alternative."; # added 2021-04-15
   mysqlWorkbench = mysql-workbench; # added 2017-01-19
   nagiosPluginsOfficial = monitoring-plugins;
   ncat = nmap;  # added 2016-01-26
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 2954f29cc26c..3f13762d4d4f 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -3349,6 +3349,7 @@ in
   };
 
   cjdns = callPackage ../tools/networking/cjdns { };
+  cjdns-tools = callPackage ../tools/admin/cjdns-tools { };
 
   cjson = callPackage ../development/libraries/cjson { };
 
@@ -6109,8 +6110,6 @@ in
 
   mxt-app = callPackage ../misc/mxt-app { };
 
-  mxisd = callPackage ../servers/mxisd { };
-
   naabu = callPackage ../tools/security/naabu { };
 
   nagstamon = callPackage ../tools/misc/nagstamon {
@@ -8569,6 +8568,8 @@ in
 
   swagger-codegen = callPackage ../tools/networking/swagger-codegen { };
 
+  swagger-codegen3 = callPackage ../tools/networking/swagger-codegen3 { };
+
   swapview = callPackage ../os-specific/linux/swapview/default.nix { };
 
   swec = callPackage ../tools/networking/swec { };
@@ -10609,6 +10610,8 @@ in
 
   inherit (callPackage ../development/compilers/haxe { })
     haxe_4_2
+    haxe_4_1
+    haxe_4_0
     haxe_3_4
     haxe_3_2
     ;
@@ -18685,6 +18688,15 @@ in
 
   nginx = nginxStable;
 
+  nginxQuic = callPackage ../servers/http/nginx/quic.nix {
+    withPerl = false;
+    # We don't use `with` statement here on purpose!
+    # See https://github.com/NixOS/nixpkgs/pull/10474/files#r42369334
+    modules = [ nginxModules.rtmp nginxModules.dav nginxModules.moreheaders ];
+    # Use latest boringssl to allow http3 support
+    openssl = boringssl;
+  };
+
   nginxStable = callPackage ../servers/http/nginx/stable.nix {
     withPerl = false;
     # We don't use `with` statement here on purpose!
@@ -21142,6 +21154,7 @@ in
   flat-remix-icon-theme = callPackage ../data/icons/flat-remix-icon-theme {
     inherit (plasma5Packages) breeze-icons;
   };
+  flat-remix-gtk = callPackage ../data/themes/flat-remix-gtk { };
 
   font-awesome_4 = (callPackage ../data/fonts/font-awesome-5 { }).v4;
   font-awesome_5 = (callPackage ../data/fonts/font-awesome-5 { }).v5;
@@ -22536,6 +22549,8 @@ in
 
   dwm = callPackage ../applications/window-managers/dwm { };
 
+  dwmblocks = callPackage ../applications/misc/dwmblocks { };
+
   dwm-status = callPackage ../applications/window-managers/dwm/dwm-status.nix { };
 
   dynamips = callPackage ../applications/virtualization/dynamips { };
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index b8c8b0a9d93c..c5328f378b64 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -1018,7 +1018,11 @@ let
 
     ocaml-protoc = callPackage ../development/ocaml-modules/ocaml-protoc { };
 
-    ocaml_extlib = callPackage ../development/ocaml-modules/extlib { };
+    ocaml_extlib = ocaml_extlib-1-7-8;
+
+    ocaml_extlib-1-7-8 = callPackage ../development/ocaml-modules/extlib { };
+
+    ocaml_extlib-1-7-7 = callPackage ../development/ocaml-modules/extlib/1.7.7.nix { };
 
     ocb-stubblr = callPackage ../development/ocaml-modules/ocb-stubblr { };