diff --git a/pkgs/applications/audio/spotifyd/default.nix b/pkgs/applications/audio/spotifyd/default.nix
index dcb5737afa6..c4e1695f083 100644
--- a/pkgs/applications/audio/spotifyd/default.nix
+++ b/pkgs/applications/audio/spotifyd/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, rustPlatform, pkgconfig, openssl
+{ stdenv, fetchFromGitHub, rustPackages_1_45, pkgconfig, openssl
 , withALSA ? true, alsaLib ? null
 , withPulseAudio ? false, libpulseaudio ? null
 , withPortAudio ? false, portaudio ? null
@@ -7,7 +7,10 @@
 , dbus ? null
 }:
 
-rustPlatform.buildRustPackage rec {
+# rust >= 1.48 causes a panic within spotifyd on music playback. as long as
+# there is no upstream fix for the issue we use an older version of rust.
+# Upstream issue: https://github.com/Spotifyd/spotifyd/issues/719
+rustPackages_1_45.rustPlatform.buildRustPackage rec {
   pname = "spotifyd";
   version = "0.2.24";
 
diff --git a/pkgs/applications/blockchains/ledger-live-desktop/default.nix b/pkgs/applications/blockchains/ledger-live-desktop/default.nix
index 2e6e2e592b1..4c64c595fef 100644
--- a/pkgs/applications/blockchains/ledger-live-desktop/default.nix
+++ b/pkgs/applications/blockchains/ledger-live-desktop/default.nix
@@ -2,12 +2,12 @@
 
 let
   pname = "ledger-live-desktop";
-  version = "2.17.1";
+  version = "2.18.0";
   name = "${pname}-${version}";
 
   src = fetchurl {
     url = "https://github.com/LedgerHQ/${pname}/releases/download/v${version}/${pname}-${version}-linux-x86_64.AppImage";
-    sha256 = "1r0cl4jfgg0b3zr46bh9dhhg2qgsh3xj99w3ryyjdxydfvychvz8";
+    sha256 = "19sx9n5mij68v07vy65h1c16rgbpll3kagr437cjb7r95k3nk2zn";
   };
 
   appimageContents = appimageTools.extractType2 {
diff --git a/pkgs/applications/blockchains/monero-gui/default.nix b/pkgs/applications/blockchains/monero-gui/default.nix
index 6275a26118f..16f4aefe349 100644
--- a/pkgs/applications/blockchains/monero-gui/default.nix
+++ b/pkgs/applications/blockchains/monero-gui/default.nix
@@ -1,6 +1,5 @@
 { stdenv, wrapQtAppsHook, makeDesktopItem
 , fetchFromGitHub
-, fetchpatch
 , cmake, qttools, pkgconfig
 , qtbase, qtdeclarative, qtgraphicaleffects
 , qtmultimedia, qtxmlpatterns
@@ -28,13 +27,13 @@ in
 
 stdenv.mkDerivation rec {
   pname = "monero-gui";
-  version = "0.17.1.4";
+  version = "0.17.1.5";
 
   src = fetchFromGitHub {
     owner  = "monero-project";
     repo   = "monero-gui";
     rev    = "v${version}";
-    sha256 = "1ixjfdlvwr2an2s9jaql240bk7jpq5hhm5c4hww0bicyy3fp12ng";
+    sha256 = "0qlcqli0wvrjfy89mbgh1hpmk60dxgn5sws93h8lhgyfwx557iw0";
   };
 
   nativeBuildInputs = [
@@ -59,14 +58,7 @@ stdenv.mkDerivation rec {
     chmod -R +w source/monero
   '';
 
-  patches = [
-    ./move-log-file.patch
-    # fix build failure due to invalid use of CMAKE_PREFIX_PATH
-    (fetchpatch {
-      url = "https://github.com/monero-project/monero-gui/commit/ef2be82c21b0934522ad8e110805b66f5948da1f.patch";
-      sha256 = "1rhazk2xwa5dv1cmkrkq8yr08qxslg4k929cvlliabrx20kbr5z5";
-    })
-  ];
+  patches = [ ./move-log-file.patch ];
 
   postPatch = ''
     # set monero-gui version
diff --git a/pkgs/applications/blockchains/monero/default.nix b/pkgs/applications/blockchains/monero/default.nix
index 1010da81da3..2978d65e2ef 100644
--- a/pkgs/applications/blockchains/monero/default.nix
+++ b/pkgs/applications/blockchains/monero/default.nix
@@ -17,13 +17,13 @@ assert trezorSupport -> all (x: x!=null) [ libusb1 protobuf python3 ];
 
 stdenv.mkDerivation rec {
   pname = "monero";
-  version = "0.17.1.3";
+  version = "0.17.1.5";
 
   src = fetchFromGitHub {
     owner = "monero-project";
     repo = "monero";
     rev = "v${version}";
-    sha256 = "1ddkdfd8i5q509qziwcx1f6nm8axs4a1ppzv2y5lgsqpq375if6j";
+    sha256 = "0yy9n2qng02j314h8fh5n0mcy6vpdks0yk4d8ifn8hj03f3g2c8b";
     fetchSubmodules = true;
   };
 
diff --git a/pkgs/applications/misc/cura/default.nix b/pkgs/applications/misc/cura/default.nix
index c0aa0a481bd..46143747f6d 100644
--- a/pkgs/applications/misc/cura/default.nix
+++ b/pkgs/applications/misc/cura/default.nix
@@ -1,26 +1,27 @@
-{ mkDerivation, lib, fetchFromGitHub, cmake, python3, qtbase, qtquickcontrols2, qtgraphicaleffects, curaengine, plugins ? [] }:
+{ mkDerivation, lib, fetchFromGitHub, cmake, python3, qtbase,
+ qtquickcontrols2, qtgraphicaleffects, curaengine, plugins ? [] }:
 
 mkDerivation rec {
   pname = "cura";
-  version = "4.7.1";
+  version = "4.8.0";
 
   src = fetchFromGitHub {
     owner = "Ultimaker";
     repo = "Cura";
     rev = version;
-    sha256 = "19an168iad3cb5w8i71c0wbr79qnz5qnpxqx1j6dgh64qz6ffn2r";
+    sha256 = "060fqzspipm93ks0inrj7yrj5wmvkdfv8xaxrv22590yb9f95s9m";
   };
 
   materials = fetchFromGitHub {
     owner = "Ultimaker";
     repo = "fdm_materials";
     rev = version;
-    sha256 = "1w6i0dlff8b30q987x3y0zv8847fc8ppfcr9vi982msmv284c89z";
+    sha256 = "0hi9w1fsnazlr0vvxdr3alsdb8m1vjjfp5zhmlz4kyyxhsy3bc33";
   };
 
   buildInputs = [ qtbase qtquickcontrols2 qtgraphicaleffects ];
   propagatedBuildInputs = with python3.pkgs; [
-    libsavitar numpy-stl pyserial requests uranium zeroconf
+    libsavitar numpy-stl pyserial requests uranium zeroconf pynest2d
     sentry-sdk trimesh
   ] ++ plugins;
   nativeBuildInputs = [ cmake python3.pkgs.wrapPython ];
diff --git a/pkgs/applications/misc/curaengine/default.nix b/pkgs/applications/misc/curaengine/default.nix
index 5cc5db3115f..8993c01a6bd 100644
--- a/pkgs/applications/misc/curaengine/default.nix
+++ b/pkgs/applications/misc/curaengine/default.nix
@@ -2,13 +2,13 @@
 
 stdenv.mkDerivation rec {
   pname = "curaengine";
-  version = "4.7.1";
+  version = "4.8.0";
 
   src = fetchFromGitHub {
     owner = "Ultimaker";
     repo = "CuraEngine";
     rev = version;
-    sha256 = "177fk6j4gn3ssi8j1qxj8p4486f7jkz328vc75agxnh7vhd4mwsm";
+    sha256 = "083l327ry6hv3yaa1p8dx1hx7fm12b0lh5nlbshxjyym0vi15rw2";
   };
 
   nativeBuildInputs = [ cmake ];
diff --git a/pkgs/applications/version-management/rabbitvcs/default.nix b/pkgs/applications/version-management/rabbitvcs/default.nix
index 2c58e15c443..0384f9723d5 100644
--- a/pkgs/applications/version-management/rabbitvcs/default.nix
+++ b/pkgs/applications/version-management/rabbitvcs/default.nix
@@ -1,7 +1,8 @@
-{ fetchFromGitHub, lib, python2Packages, meld, subversion, gvfs, xdg_utils }:
-python2Packages.buildPythonApplication rec {
+{ fetchFromGitHub, lib, python3Packages, meld, subversion, gvfs, xdg_utils, gtk3 }:
+
+python3Packages.buildPythonApplication rec {
   pname = "rabbitvcs";
-  version = "0.17.1";
+  version = "0.18";
   namePrefix = "";
 
   src = fetchFromGitHub {
@@ -11,7 +12,8 @@ python2Packages.buildPythonApplication rec {
     sha256 = "01cr16zf3gzsci1hhfli79m34fcx5m1pvswl16rkxxn212yc9fhy";
   };
 
-  pythonPath = with python2Packages; [ configobj dbus-python pygobject2 pygtk simplejson pysvn dulwich tkinter gvfs xdg_utils ];
+  buildInputs = [ gtk3 ];
+  pythonPath = with python3Packages; [ configobj pygobject3 pysvn dulwich tkinter gvfs xdg_utils ];
 
   prePatch = ''
       sed -ie 's|if sys\.argv\[1\] == "install":|if False:|' ./setup.py
diff --git a/pkgs/development/libraries/libgpiod/default.nix b/pkgs/development/libraries/libgpiod/default.nix
index e49fad551da..a3178e54804 100644
--- a/pkgs/development/libraries/libgpiod/default.nix
+++ b/pkgs/development/libraries/libgpiod/default.nix
@@ -4,11 +4,11 @@
 
 stdenv.mkDerivation rec {
   pname = "libgpiod";
-  version = "1.6.1";
+  version = "1.6.2";
 
   src = fetchurl {
     url = "https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git/snapshot/libgpiod-${version}.tar.gz";
-    sha256 = "0p3vjf4zj137miix1gbi8rv6g4wvi8kmyhwwxyirw00ankxbxp1n";
+    sha256 = "1k8mxkzvd6y9aawxghddrjkldzskhb6607qhbwjfl9f945ns87qa";
   };
 
   patches = [
diff --git a/pkgs/development/libraries/libnest2d/default.nix b/pkgs/development/libraries/libnest2d/default.nix
new file mode 100644
index 00000000000..ee61ef8a723
--- /dev/null
+++ b/pkgs/development/libraries/libnest2d/default.nix
@@ -0,0 +1,30 @@
+{ stdenv, fetchFromGitHub, cmake, clipper, nlopt, boost, python3 }:
+
+stdenv.mkDerivation rec {
+  version = "2020-10-09-unstable";
+  pname = "libnest2d";
+
+  # This revision is waiting to be merged upstream
+  # Once it has been merged, this should be switched to it
+  # Upstream PR: https://github.com/tamasmeszaros/libnest2d/pull/18
+  src = fetchFromGitHub {
+    owner = "Ultimaker";
+    repo = "libnest2d";
+    rev = "31391fd173249ad9b906390058e13b09238fadc8";
+    sha256 = "1hzqi4z55x76rss3xk7hfqhy9hcaq2jaav5jqxa1aqmbvarr2gla";
+  };
+
+  propagatedBuildInputs = [ clipper nlopt boost ];
+  nativeBuildInputs = [ cmake ];
+
+  CLIPPER_PATH = "${clipper.out}";
+  cmakeFlags = [ "-DLIBNEST2D_HEADER_ONLY=OFF" ];
+
+  meta = with stdenv.lib; {
+    description =
+      "2D irregular bin packaging and nesting library written in modern C++";
+    homepage = "https://github.com/Ultimaker/libnest2d";
+    license = licenses.lgpl3;
+    platforms = platforms.linux;
+  };
+}
diff --git a/pkgs/development/python-modules/libarcus/default.nix b/pkgs/development/python-modules/libarcus/default.nix
index 5b68695f832..e69e51ccf55 100644
--- a/pkgs/development/python-modules/libarcus/default.nix
+++ b/pkgs/development/python-modules/libarcus/default.nix
@@ -3,14 +3,14 @@
 
 buildPythonPackage rec {
   pname = "libarcus";
-  version = "4.7.1";
+  version = "4.8.0";
   format = "other";
 
   src = fetchFromGitHub {
     owner = "Ultimaker";
     repo = "libArcus";
     rev = version;
-    sha256 = "0wmrcvw7k34ib93shhmjzh6kpndgqr37kyr377sril5clmac0z1f";
+    sha256 = "1dvz1rkvm4309yzvj7vy49v1vskr5yfq4nzqdiydp1jb7zpvhqqm";
   };
 
   disabled = pythonOlder "3.4.0";
diff --git a/pkgs/development/python-modules/libsavitar/default.nix b/pkgs/development/python-modules/libsavitar/default.nix
index 27144ccf1ad..9b6aa7bc3a8 100644
--- a/pkgs/development/python-modules/libsavitar/default.nix
+++ b/pkgs/development/python-modules/libsavitar/default.nix
@@ -2,14 +2,14 @@
 
 buildPythonPackage rec {
   pname = "libsavitar";
-  version = "4.7.1";
+  version = "4.8.0";
   format = "other";
 
   src = fetchFromGitHub {
     owner = "Ultimaker";
     repo = "libSavitar";
     rev = version;
-    sha256 = "0mzr3ynfap51bcn6kshyi2h6iny2gpavn6g3b1xcsgzzlxqgfixf";
+    sha256 = "1mxkvnhn8k1a86jlnjnlpf0b8dvrcg3n7pslf60s13cgb7w3sfzh";
   };
 
   postPatch = ''
diff --git a/pkgs/development/python-modules/libusb1/default.nix b/pkgs/development/python-modules/libusb1/default.nix
index 25c092200e7..c12888b3a8c 100644
--- a/pkgs/development/python-modules/libusb1/default.nix
+++ b/pkgs/development/python-modules/libusb1/default.nix
@@ -2,11 +2,11 @@
 
 buildPythonPackage rec {
   pname = "libusb1";
-  version = "1.8.1";
+  version = "1.9";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "a8301a7e11ae44a03a46efc740022f8598ed55b6448b14ba68a63954ef18a240";
+    sha256 = "sha256:0l7vj04xm0i5ikxjdqrr5939q7amh0hfp0fqifkcvyjv9fvhyz65";
   };
 
   postPatch = ''
diff --git a/pkgs/development/python-modules/pycxx/default.nix b/pkgs/development/python-modules/pycxx/default.nix
new file mode 100644
index 00000000000..c0cf0ac0dc1
--- /dev/null
+++ b/pkgs/development/python-modules/pycxx/default.nix
@@ -0,0 +1,27 @@
+{ lib, buildPythonPackage, fetchurl, python }:
+
+buildPythonPackage rec {
+  pname = "pycxx";
+  version = "7.1.4";
+
+  src = fetchurl {
+    url = "mirror://sourceforge/cxx/CXX/PyCXX%20V${version}/pycxx-${version}.tar.gz";
+    sha256 = "MUMU+/qsm92WENYFxfjQsSuR8/nE/asYG8HgIbaAaz0=";
+  };
+
+  outputs = [ "out" "dev" ];
+
+  postInstall = ''
+    mkdir -p $dev/include
+    mv $out/include/${python.libPrefix}*/CXX/ $dev/include/CXX/
+    mv $out/CXX $dev/src
+    sed -i "s|Src|$dev/src|" $dev/src/cxxextensions.c $dev/src/cxxsupport.cxx
+  '';
+
+  meta = with lib; {
+    description = "set of classes to help create extensions of Python in the C++ language";
+    homepage = "https://sourceforge.net/projects/cxx/";
+    maintainers = with maintainers; [ freezeboy ];
+    platforms = platforms.all;
+  };
+}
diff --git a/pkgs/development/python-modules/pynest2d/default.nix b/pkgs/development/python-modules/pynest2d/default.nix
new file mode 100644
index 00000000000..3a7c6b43392
--- /dev/null
+++ b/pkgs/development/python-modules/pynest2d/default.nix
@@ -0,0 +1,31 @@
+{ stdenv, buildPythonPackage, fetchFromGitHub, python3, cmake
+, pythonOlder, libnest2d, sip, clipper }:
+
+buildPythonPackage rec {
+  version = "4.8.0";
+  pname = "pynest2d";
+  format = "other";
+
+  src = fetchFromGitHub {
+    owner = "Ultimaker";
+    repo = "pynest2d";
+    rev = version;
+    sha256 = "18dn92vgr4gvf9scfh93yg9bwrhdjvq62di08rpi7pqjrrvq2nvp";
+  };
+
+  propagatedBuildInputs = [ libnest2d sip clipper ];
+  nativeBuildInputs = [ cmake ];
+
+  CLIPPER_PATH = "${clipper.out}";
+
+  postPatch = ''
+     sed -i 's#''${Python3_SITEARCH}#${placeholder "out"}/${python3.sitePackages}#' cmake/SIPMacros.cmake
+   '';
+
+  meta = with stdenv.lib; {
+    description = "Python bindings for libnest2d";
+    homepage = "https://github.com/Ultimaker/pynest2d";
+    license = licenses.lgpl3;
+    platforms = platforms.linux;
+  };
+}
diff --git a/pkgs/development/python-modules/pysvn/default.nix b/pkgs/development/python-modules/pysvn/default.nix
index d46d3cfc500..d56c10a9591 100644
--- a/pkgs/development/python-modules/pysvn/default.nix
+++ b/pkgs/development/python-modules/pysvn/default.nix
@@ -1,43 +1,69 @@
 { stdenv
+, lib
 , buildPythonPackage
 , fetchurl
-, pkgs
 , isPy3k
 , python
+, apr
+, aprutil
+, bash
+, e2fsprogs
+, expat
+, gcc
+, glibcLocales
+, neon
+, openssl
+, pycxx
+, subversion
 }:
 
 buildPythonPackage rec {
   pname = "pysvn";
-  version = "1.8.0";
-  disabled = isPy3k;
+  version = "1.9.12";
   format = "other";
 
   src = fetchurl {
     url = "http://pysvn.barrys-emacs.org/source_kits/${pname}-${version}.tar.gz";
-    sha256 = "0srjr2qgxfs69p65d9vvdib2lc142x10w8afbbdrqs7dhi46yn9r";
+    sha256 = "sRPa4wNyjDmGdF1gTOgLS0pnrdyZwkkH4/9UCdh/R9Q=";
   };
 
-  buildInputs = [ pkgs.subversion pkgs.apr pkgs.aprutil pkgs.expat pkgs.neon pkgs.openssl ]
-    ++ (if stdenv.isLinux then [pkgs.e2fsprogs] else []);
+  buildInputs = [ bash subversion apr aprutil expat neon openssl ]
+    ++ lib.optionals stdenv.isLinux [ e2fsprogs ]
+    ++ lib.optionals stdenv.isDarwin [ gcc ];
 
-  # There seems to be no way to pass that path to configure.
-  NIX_CFLAGS_COMPILE="-I${pkgs.aprutil.dev}/include/apr-1";
+  postPatch = ''
+    sed -i "117s|append(|insert(0, |" Tests/benchmark_diff.py
+  '';
 
   preConfigure = ''
     cd Source
     ${python.interpreter} setup.py backport
     ${python.interpreter} setup.py configure \
-      --apr-inc-dir=${pkgs.apr.dev}/include \
-      --apu-inc-dir=${pkgs.aprutil.dev}/include \
-      --apr-lib-dir=${pkgs.apr.out}/lib \
-      --svn-lib-dir=${pkgs.subversion.out}/lib \
-      --svn-bin-dir=${pkgs.subversion.out}/bin \
-      --svn-root-dir=${pkgs.subversion.dev}
-  '' + (if !stdenv.isDarwin then "" else ''
+      --apr-inc-dir=${apr.dev}/include \
+      --apu-inc-dir=${aprutil.dev}/include \
+      --pycxx-dir=${pycxx.dev}/include \
+      --svn-inc-dir=${subversion.dev}/include/subversion-1 \
+      --pycxx-src-dir=${pycxx.dev}/src \
+      --apr-lib-dir=${apr.out}/lib \
+      --svn-lib-dir=${subversion.out}/lib \
+      --svn-bin-dir=${subversion.out}/bin
+  '' + (lib.optionalString (stdenv.isDarwin && !isPy3k) ''
     sed -i -e 's|libpython2.7.dylib|lib/libpython2.7.dylib|' Makefile
   '');
 
-  checkPhase = "make -C ../Tests";
+  checkInputs = [ glibcLocales  ];
+  checkPhase = ''
+    runHook preCheck
+
+    # It is not only shebangs, some tests also write scripts dynamically
+    # so it is easier to simply search and replace
+    sed -i "s|/bin/bash|${bash}/bin/bash|" ../Tests/test-*.sh
+    make -C ../Tests
+
+    runHook postCheck
+  '';
+
+  pythonImportCheck = [ "pysvn" ];
 
   installPhase = ''
     dest=$(toPythonPath $out)/pysvn
@@ -45,15 +71,14 @@ buildPythonPackage rec {
     cp pysvn/__init__.py $dest/
     cp pysvn/_pysvn*.so $dest/
     mkdir -p $out/share/doc
-    mv -v ../Docs $out/share/doc/pysvn-1.7.2
-    rm -v $out/share/doc/pysvn-1.7.2/generate_cpp_docs_from_html_docs.py
+    mv -v ../Docs $out/share/doc/pysvn-${version}
+    rm -v $out/share/doc/pysvn-${version}/generate_cpp_docs_from_html_docs.py
   '';
 
   meta = with stdenv.lib; {
     description = "Python bindings for Subversion";
     homepage = "http://pysvn.tigris.org/";
     license = licenses.asl20;
-    broken = true;
   };
 
 }
diff --git a/pkgs/development/python-modules/pytest-xdist/1.nix b/pkgs/development/python-modules/pytest-xdist/1.nix
new file mode 100644
index 00000000000..6dc4b666db5
--- /dev/null
+++ b/pkgs/development/python-modules/pytest-xdist/1.nix
@@ -0,0 +1,36 @@
+{ stdenv, fetchPypi, buildPythonPackage, execnet, pytest
+, setuptools_scm, pytest-forked, filelock, psutil, six, isPy3k }:
+
+buildPythonPackage rec {
+  pname = "pytest-xdist";
+  version = "1.34.0";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "1vh4ps32lp5ignch5adbl3pgchvigdfmrl6qpmhxih54wa1qw3il";
+  };
+
+  nativeBuildInputs = [ setuptools_scm pytest ];
+  checkInputs = [ pytest filelock ];
+  propagatedBuildInputs = [ execnet pytest-forked psutil six ];
+
+  # Encountered a memory leak
+  # https://github.com/pytest-dev/pytest-xdist/issues/462
+  doCheck = !isPy3k;
+
+  checkPhase = ''
+    # Excluded tests access file system
+    py.test testing -k "not test_distribution_rsyncdirs_example \
+                    and not test_rsync_popen_with_path \
+                    and not test_popen_rsync_subdir \
+                    and not test_init_rsync_roots \
+                    and not test_rsyncignore"
+  '';
+
+  meta = with stdenv.lib; {
+    description = "py.test xdist plugin for distributed testing and loop-on-failing modes";
+    homepage = "https://github.com/pytest-dev/pytest-xdist";
+    license = licenses.mit;
+    maintainers = with maintainers; [ dotlambda ];
+  };
+}
diff --git a/pkgs/development/python-modules/pytest-xdist/2.nix b/pkgs/development/python-modules/pytest-xdist/2.nix
deleted file mode 100644
index cc58c5ab6bd..00000000000
--- a/pkgs/development/python-modules/pytest-xdist/2.nix
+++ /dev/null
@@ -1,33 +0,0 @@
-{ stdenv, fetchPypi, buildPythonPackage, execnet, pytest_6
-, setuptools_scm, pytest-forked, filelock, psutil, six, isPy3k }:
-
-buildPythonPackage rec {
-  pname = "pytest-xdist";
-  version = "2.1.0";
-  disabled = !isPy3k;
-
-  src = fetchPypi {
-    inherit pname version;
-    sha256 = "0wh6pn66nncfs6ay0n863bgyriwsgppn8flx5l7551j1lbqkinc2";
-  };
-
-  nativeBuildInputs = [ setuptools_scm pytest_6 ];
-  checkInputs = [ pytest_6 filelock ];
-  propagatedBuildInputs = [ execnet pytest-forked psutil six ];
-
-  # pytest6 doesn't allow for new lines
-  # capture_deprecated not compatible with latest pytest6
-  checkPhase = ''
-    # Excluded tests access file system
-    export HOME=$TMPDIR
-    pytest -n $NIX_BUILD_CORES \
-      -k "not (distribution_rsyncdirs_example or rsync or warning_captured_deprecated_in_pytest_6)"
-  '';
-
-  meta = with stdenv.lib; {
-    description = "py.test xdist plugin for distributed testing and loop-on-failing modes";
-    homepage = "https://github.com/pytest-dev/pytest-xdist";
-    license = licenses.mit;
-    maintainers = with maintainers; [ dotlambda ];
-  };
-}
diff --git a/pkgs/development/python-modules/pytest-xdist/default.nix b/pkgs/development/python-modules/pytest-xdist/default.nix
index 56e3f3cad59..cc58c5ab6bd 100644
--- a/pkgs/development/python-modules/pytest-xdist/default.nix
+++ b/pkgs/development/python-modules/pytest-xdist/default.nix
@@ -1,30 +1,27 @@
-{ stdenv, fetchPypi, buildPythonPackage, execnet, pytest
+{ stdenv, fetchPypi, buildPythonPackage, execnet, pytest_6
 , setuptools_scm, pytest-forked, filelock, psutil, six, isPy3k }:
 
 buildPythonPackage rec {
   pname = "pytest-xdist";
   version = "2.1.0";
+  disabled = !isPy3k;
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "82d938f1a24186520e2d9d3a64ef7d9ac7ecdf1a0659e095d18e596b8cbd0672";
+    sha256 = "0wh6pn66nncfs6ay0n863bgyriwsgppn8flx5l7551j1lbqkinc2";
   };
 
-  nativeBuildInputs = [ setuptools_scm pytest ];
-  checkInputs = [ pytest filelock ];
+  nativeBuildInputs = [ setuptools_scm pytest_6 ];
+  checkInputs = [ pytest_6 filelock ];
   propagatedBuildInputs = [ execnet pytest-forked psutil six ];
 
-  # Encountered a memory leak
-  # https://github.com/pytest-dev/pytest-xdist/issues/462
-  doCheck = !isPy3k;
-
+  # pytest6 doesn't allow for new lines
+  # capture_deprecated not compatible with latest pytest6
   checkPhase = ''
     # Excluded tests access file system
-    py.test testing -k "not test_distribution_rsyncdirs_example \
-                    and not test_rsync_popen_with_path \
-                    and not test_popen_rsync_subdir \
-                    and not test_init_rsync_roots \
-                    and not test_rsyncignore"
+    export HOME=$TMPDIR
+    pytest -n $NIX_BUILD_CORES \
+      -k "not (distribution_rsyncdirs_example or rsync or warning_captured_deprecated_in_pytest_6)"
   '';
 
   meta = with stdenv.lib; {
diff --git a/pkgs/development/tools/database/liquibase/default.nix b/pkgs/development/tools/database/liquibase/default.nix
index b70c2a80e4a..bdb2f8cbd75 100644
--- a/pkgs/development/tools/database/liquibase/default.nix
+++ b/pkgs/development/tools/database/liquibase/default.nix
@@ -10,11 +10,11 @@ in
 
 stdenv.mkDerivation rec {
   pname = "liquibase";
-  version = "4.2.0";
+  version = "4.2.1";
 
   src = fetchurl {
     url = "https://github.com/liquibase/liquibase/releases/download/v${version}/${pname}-${version}.tar.gz";
-    sha256 = "0xj2gg1z9l1f4aqrsbz5hww8hvrhiyz8fdrpr9861jmbxyzl03y7";
+    sha256 = "1fv92f71p7pk3r4aj88kgaiblfii3z4fjbchyj1c9k6br0gwbw8b";
   };
 
   buildInputs = [ jre makeWrapper ];
diff --git a/pkgs/tools/security/rage/default.nix b/pkgs/tools/security/rage/default.nix
index 1e0164e10cf..69ea8c0f9c2 100644
--- a/pkgs/tools/security/rage/default.nix
+++ b/pkgs/tools/security/rage/default.nix
@@ -1,4 +1,5 @@
-{ stdenv, rustPlatform, fetchFromGitHub, installShellFiles, darwin }:
+{ stdenv, rustPlatform, fetchFromGitHub, installShellFiles
+, Foundation, Security }:
 
 rustPlatform.buildRustPackage rec {
   pname = "rage";
@@ -15,7 +16,10 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ installShellFiles ];
 
-  buildInputs = stdenv.lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Security ];
+  buildInputs = stdenv.lib.optionals stdenv.isDarwin [
+    Foundation
+    Security
+  ];
 
   postBuild = ''
     cargo run --example generate-docs
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index d536dbb159f..a3d5f6589f0 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -3547,7 +3547,9 @@ in
 
   pax = callPackage ../tools/archivers/pax { };
 
-  rage = callPackage ../tools/security/rage { };
+  rage = callPackage ../tools/security/rage {
+    inherit (darwin.apple_sdk.frameworks) Foundation Security;
+  };
 
   rar2fs = callPackage ../tools/filesystems/rar2fs { };
 
@@ -14416,6 +14418,8 @@ in
 
   libndctl = callPackage ../development/libraries/libndctl { };
 
+  libnest2d = callPackage ../development/libraries/libnest2d { };
+
   libnet = callPackage ../development/libraries/libnet { };
 
   libnetfilter_acct = callPackage ../development/libraries/libnetfilter_acct { };
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 40ec8314d9e..08cb32a9408 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -5023,6 +5023,8 @@ in {
 
   pycurl = callPackage ../development/python-modules/pycurl { };
 
+  pycxx = callPackage ../development/python-modules/pycxx { };
+
   pydantic = callPackage ../development/python-modules/pydantic { };
 
   pydbus = callPackage ../development/python-modules/pydbus { };
@@ -5341,6 +5343,8 @@ in {
 
   pync = callPackage ../development/python-modules/pync { };
 
+  pynest2d = callPackage ../development/python-modules/pynest2d { };
+
   pynisher = callPackage ../development/python-modules/pynisher { };
 
   pynmea2 = callPackage ../development/python-modules/pynmea2 { };
@@ -5640,7 +5644,9 @@ in {
 
   pystringtemplate = callPackage ../development/python-modules/stringtemplate { };
 
-  pysvn = callPackage ../development/python-modules/pysvn { };
+  pysvn = callPackage ../development/python-modules/pysvn {
+    inherit (pkgs) bash subversion apr aprutil expat neon openssl;
+  };
 
   pytabix = callPackage ../development/python-modules/pytabix { };
 
@@ -5823,11 +5829,10 @@ in {
 
   pytest-watch = callPackage ../development/python-modules/pytest-watch { };
 
-  pytest_xdist_1 = callPackage ../development/python-modules/pytest-xdist { };
-
-  pytest_xdist_2 = callPackage ../development/python-modules/pytest-xdist/2.nix { };
-
-  pytest_xdist = self.pytest_xdist_2;
+  pytest_xdist = if isPy27 then
+    callPackage ../development/python-modules/pytest-xdist/1.nix { }
+  else
+    callPackage ../development/python-modules/pytest-xdist { };
 
   pytest-xprocess = callPackage ../development/python-modules/pytest-xprocess { };