diff --git a/nixos/modules/services/monitoring/sysstat.nix b/nixos/modules/services/monitoring/sysstat.nix
index d668faa53cc3..ca2cff827232 100644
--- a/nixos/modules/services/monitoring/sysstat.nix
+++ b/nixos/modules/services/monitoring/sysstat.nix
@@ -5,15 +5,10 @@ let
 in {
   options = {
     services.sysstat = {
-      enable = mkOption {
-        type = types.bool;
-        default = false;
-        description = ''
-          Whether to enable sar system activity collection.
-        '';
-      };
+      enable = mkEnableOption "sar system activity collection";
 
       collect-frequency = mkOption {
+        type = types.str;
         default = "*:00/10";
         description = ''
           OnCalendar specification for sysstat-collect
@@ -21,6 +16,7 @@ in {
       };
 
       collect-args = mkOption {
+        type = types.str;
         default = "1 1";
         description = ''
           Arguments to pass sa1 when collecting statistics
@@ -33,13 +29,13 @@ in {
     systemd.services.sysstat = {
       description = "Resets System Activity Logs";
       wantedBy = [ "multi-user.target" ];
-      preStart = "test -d /var/log/sa || mkdir -p /var/log/sa";
 
       serviceConfig = {
         User = "root";
         RemainAfterExit = true;
         Type = "oneshot";
         ExecStart = "${pkgs.sysstat}/lib/sa/sa1 --boot";
+        LogsDirectory = "sa";
       };
     };
 
diff --git a/pkgs/development/libraries/libgpg-error/default.nix b/pkgs/development/libraries/libgpg-error/default.nix
index 69c236d72209..c02bc7f0ed3e 100644
--- a/pkgs/development/libraries/libgpg-error/default.nix
+++ b/pkgs/development/libraries/libgpg-error/default.nix
@@ -39,6 +39,7 @@ in stdenv.mkDerivation (rec {
     sed '/BUILD_TIMESTAMP=/s/=.*/=1970-01-01T00:01+0000/' -i ./configure
   '' + lib.optionalString (stdenv.hostPlatform.isAarch32 && stdenv.buildPlatform != stdenv.hostPlatform) ''
     ln -s lock-obj-pub.arm-unknown-linux-gnueabi.h src/syscfg/lock-obj-pub.linux-gnueabihf.h
+    ln -s lock-obj-pub.arm-unknown-linux-gnueabi.h src/syscfg/lock-obj-pub.linux-gnueabi.h
   '' + lib.optionalString (stdenv.hostPlatform.isx86_64 && stdenv.hostPlatform.isMusl) ''
     ln -s lock-obj-pub.x86_64-pc-linux-musl.h src/syscfg/lock-obj-pub.linux-musl.h
   '' + lib.optionalString (stdenv.hostPlatform.isAarch32 && stdenv.hostPlatform.isMusl) ''
diff --git a/pkgs/development/libraries/spdk/default.nix b/pkgs/development/libraries/spdk/default.nix
index a18edc0a6dff..e70980afac61 100644
--- a/pkgs/development/libraries/spdk/default.nix
+++ b/pkgs/development/libraries/spdk/default.nix
@@ -1,19 +1,21 @@
-{ stdenv, fetchFromGitHub, python, cunit, dpdk, libaio, libuuid, numactl, openssl }:
+{ stdenv, fetchFromGitHub, python, cunit, dpdk, libaio, libbsd, libuuid, numactl, openssl }:
 
 stdenv.mkDerivation rec {
   pname = "spdk";
-  version = "19.04";
+  version = "19.10";
 
   src = fetchFromGitHub {
     owner = "spdk";
     repo = "spdk";
     rev = "v${version}";
-    sha256 = "10mzal1hspnh26ws5d7sc54gyjfzkf6amr0gkd7b368ng2a9z8s6";
+    sha256 = "16v2vswn3rnnj7ak5w5rsak6r8f9b85gyhyll4ac1k4xpyj488hj";
   };
 
+  patches = [ ./spdk-dpdk-meson.patch ];
+
   nativeBuildInputs = [ python ];
 
-  buildInputs = [ cunit dpdk libaio libuuid numactl openssl ];
+  buildInputs = [ cunit dpdk libaio libbsd libuuid numactl openssl ];
 
   postPatch = ''
     patchShebangs .
diff --git a/pkgs/development/libraries/spdk/spdk-dpdk-meson.patch b/pkgs/development/libraries/spdk/spdk-dpdk-meson.patch
new file mode 100644
index 000000000000..9cc6d89ce50e
--- /dev/null
+++ b/pkgs/development/libraries/spdk/spdk-dpdk-meson.patch
@@ -0,0 +1,17 @@
+1. dpdk built with meson generates rte_build_config.h rather than rte_config.h.
+2. dpdk configured with libbsd requires that dependents link with libbsd.
+
+--- a/lib/env_dpdk/env.mk
++++ b/lib/env_dpdk/env.mk
+@@ -140,6 +140,9 @@ endif
+ 
+-ifneq (,$(wildcard $(DPDK_INC_DIR)/rte_config.h))
+-ifneq (,$(shell grep -e "define RTE_LIBRTE_VHOST_NUMA 1" -e "define RTE_EAL_NUMA_AWARE_HUGEPAGES 1" $(DPDK_INC_DIR)/rte_config.h))
++ifneq (,$(wildcard $(DPDK_INC_DIR)/rte_build_config.h))
++ifneq (,$(shell grep -e "define RTE_LIBRTE_VHOST_NUMA 1" -e "define RTE_EAL_NUMA_AWARE_HUGEPAGES 1" $(DPDK_INC_DIR)/rte_build_config.h))
+ ENV_LINKER_ARGS += -lnuma
+ endif
++ifneq (,$(shell grep -e "define RTE_USE_LIBBSD 1" $(DPDK_INC_DIR)/rte_build_config.h))
++ENV_LINKER_ARGS += -lbsd
++endif
+ endif
diff --git a/pkgs/development/python-modules/aioamqp/default.nix b/pkgs/development/python-modules/aioamqp/default.nix
index 17abad630a53..8db472205434 100644
--- a/pkgs/development/python-modules/aioamqp/default.nix
+++ b/pkgs/development/python-modules/aioamqp/default.nix
@@ -1,20 +1,42 @@
-{ lib, buildPythonPackage, fetchPypi, pythonOlder,
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, pamqp
+, pytest
+, asynctest
+, pyrabbit2
+, isPy27
 }:
 
 buildPythonPackage rec {
   pname = "aioamqp";
   version = "0.14.0";
+  disabled = isPy27;
 
-  meta = {
+  src = fetchFromGitHub {
+    owner = "Polyconseil";
+    repo = pname;
+    rev = "${pname}-${version}";
+    sha256 = "1gpfsrc2vi6w33c9zsycd2qn589pr7a222rb41r85m915283zy48";
+  };
+
+  propagatedBuildInputs = [
+    pamqp
+  ];
+
+  checkInputs = [
+    pytest
+    asynctest
+    pyrabbit2
+  ];
+
+  # tests assume rabbitmq server running
+  doCheck = false;
+
+  meta = with lib; {
     homepage = https://github.com/polyconseil/aioamqp;
     description = "AMQP implementation using asyncio";
-    license = lib.licenses.bsd3;
+    license = licenses.bsd3;
+    maintainers = [ maintainers.costrouc ];
   };
-
-  src = fetchPypi {
-    inherit pname version;
-    sha256 = "eef5c23a7fedee079d8326406f5c7a5725dfe36c359373da3499fffa16f79915";
-  };
-
-  disabled = pythonOlder "3.3";
 }
diff --git a/pkgs/development/python-modules/aiocontextvars/default.nix b/pkgs/development/python-modules/aiocontextvars/default.nix
new file mode 100644
index 000000000000..38fdf14164eb
--- /dev/null
+++ b/pkgs/development/python-modules/aiocontextvars/default.nix
@@ -0,0 +1,48 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, pytestrunner
+, pytest
+, pytest-asyncio
+, contextvars
+, sqlalchemy
+, isPy27
+, pythonOlder
+}:
+
+buildPythonPackage rec {
+  pname = "aiocontextvars";
+  version = "0.2.2";
+  disabled = isPy27;
+
+  src = fetchFromGitHub {
+    owner = "fantix";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "0a2gmrm9csiknc8n3si67sgzffkydplh9d7ga1k87ygk2aj22mmk";
+  };
+
+  buildInputs = [
+    pytestrunner
+  ];
+
+  checkInputs = [
+    pytest
+    pytest-asyncio
+  ];
+
+  propagatedBuildInputs = [
+    sqlalchemy
+  ] ++ lib.optionals (pythonOlder "3.7") [ contextvars ];
+
+  checkPhase = ''
+    pytest
+  '';
+
+  meta = with lib; {
+    description = "Asyncio support for PEP-567 contextvars backport";
+    homepage = https://github.com/fantix/aiocontextvars;
+    license = licenses.bsd3;
+    maintainers = [ maintainers.costrouc ];
+  };
+}
diff --git a/pkgs/development/python-modules/aiomysql/default.nix b/pkgs/development/python-modules/aiomysql/default.nix
new file mode 100644
index 000000000000..891e9f216ce8
--- /dev/null
+++ b/pkgs/development/python-modules/aiomysql/default.nix
@@ -0,0 +1,47 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, pymysql
+, pytest
+, isPy27
+}:
+
+buildPythonPackage rec {
+  pname = "aiomysql";
+  version = "0.0.20";
+  disabled = isPy27;
+
+  src = fetchFromGitHub {
+    owner = "aio-libs";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "1mxih81zc2k64briirpp5wz4f72l8v05avfyfibaq9fr6lcbih9b";
+  };
+
+  propagatedBuildInputs = [
+    pymysql
+  ];
+
+  checkInputs = [
+    pytest
+  ];
+
+  postPatch = ''
+    substituteInPlace setup.py \
+      --replace "PyMySQL>=0.9,<=0.9.2" "PyMySQL"
+  '';
+
+  checkPhase = ''
+    pytest
+  '';
+
+  # tests require mysql database
+  doCheck = false;
+
+  meta = with lib; {
+    description = "MySQL driver for asyncio";
+    homepage = https://github.com/aio-libs/aiomysql;
+    license = licenses.mit;
+    maintainers = [ maintainers.costrouc ];
+  };
+}
diff --git a/pkgs/development/python-modules/aiosqlite/default.nix b/pkgs/development/python-modules/aiosqlite/default.nix
new file mode 100644
index 000000000000..1032485e9801
--- /dev/null
+++ b/pkgs/development/python-modules/aiosqlite/default.nix
@@ -0,0 +1,36 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, setuptools
+, aiounittest
+, isPy27
+, pytest
+}:
+
+buildPythonPackage rec {
+  pname = "aiosqlite";
+  version = "0.11.0";
+  disabled = isPy27;
+
+  src = fetchFromGitHub {
+    owner = "jreese";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "0pmkp4iy738yv2sl08kvhd0ma6wjqbmfnwid72gvg4zqsr1hnn0z";
+  };
+
+  buildInputs = [
+    setuptools
+  ];
+
+  checkInputs = [
+    aiounittest
+  ];
+
+  meta = with lib; {
+    description = "Asyncio bridge to the standard sqlite3 module";
+    homepage = https://github.com/jreese/aiosqlite;
+    license = licenses.mit;
+    maintainers = [ maintainers.costrouc ];
+  };
+}
diff --git a/pkgs/development/python-modules/aiounittest/default.nix b/pkgs/development/python-modules/aiounittest/default.nix
new file mode 100644
index 000000000000..743600a0d3b0
--- /dev/null
+++ b/pkgs/development/python-modules/aiounittest/default.nix
@@ -0,0 +1,36 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, nose
+, coverage
+, isPy27
+}:
+
+buildPythonPackage rec {
+  pname = "aiounittest";
+  version = "1.3.1";
+  disabled = isPy27;
+
+  src = fetchFromGitHub {
+    owner = "kwarunek";
+    repo = pname;
+    rev = version;
+    sha256 = "0mlic2q49cb0vv62mixy4i4x8c91qb6jlji7khiamcxcg676nasl";
+  };
+
+  checkInputs = [
+    nose
+    coverage
+  ];
+
+  checkPhase = ''
+    nosetests
+  '';
+
+  meta = with lib; {
+    description = "Test asyncio code more easily";
+    homepage = https://github.com/kwarunek/aiounittest;
+    license = licenses.mit;
+    maintainers = [ maintainers.costrouc ];
+  };
+}
diff --git a/pkgs/development/python-modules/databases/default.nix b/pkgs/development/python-modules/databases/default.nix
new file mode 100644
index 000000000000..e4129ed9bbf3
--- /dev/null
+++ b/pkgs/development/python-modules/databases/default.nix
@@ -0,0 +1,49 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, sqlalchemy
+, aiocontextvars
+, isPy27
+, pytest
+, asyncpg
+, aiomysql
+, aiosqlite
+}:
+
+buildPythonPackage rec {
+  pname = "databases";
+  version = "0.2.6";
+  disabled = isPy27;
+
+  src = fetchFromGitHub {
+    owner = "encode";
+    repo = pname;
+    rev = version;
+    sha256 = "0cdb4vln4zdmqbbcj7711b81b2l64jg1miihqcg8gpi35v404h2q";
+  };
+
+  propagatedBuildInputs = [
+    sqlalchemy
+    aiocontextvars
+  ];
+
+  checkInputs = [
+    pytest
+    asyncpg
+    aiomysql
+    aiosqlite
+  ];
+
+  # big chunk to tests depend on existing posgresql and mysql databases
+  # some tests are better than no tests
+  checkPhase = ''
+    pytest --ignore=tests/test_integration.py --ignore=tests/test_databases.py
+  '';
+
+  meta = with lib; {
+    description = "Async database support for Python";
+    homepage = https://github.com/encode/databases;
+    license = licenses.bsd3;
+    maintainers = [ maintainers.costrouc ];
+  };
+}
diff --git a/pkgs/development/python-modules/diskcache/default.nix b/pkgs/development/python-modules/diskcache/default.nix
index 6aec01ed7388..a420fc037bbe 100644
--- a/pkgs/development/python-modules/diskcache/default.nix
+++ b/pkgs/development/python-modules/diskcache/default.nix
@@ -1,22 +1,36 @@
 { lib
 , buildPythonPackage
-, fetchPypi
-, tox
+, fetchFromGitHub
+, pytest
+, pytestcov
+, pytest_xdist
+, pytest-django
+, mock
 }:
 
 buildPythonPackage rec {
   pname = "diskcache";
   version = "4.1.0";
 
-  src = fetchPypi {
-    inherit pname version;
-    sha256 = "bcee5a59f9c264e2809e58d01be6569a3bbb1e36a1e0fb83f7ef9b2075f95ce0";
+  src = fetchFromGitHub {
+    owner = "grantjenks";
+    repo = "python-diskcache";
+    rev = "v${version}";
+    sha256 = "0xy2vpk4hixb4gg871d9sx9wxdz8pi0pmnfdwg4bf8jqfjg022w8";
   };
 
   checkInputs = [
-    tox
+    pytest
+    pytestcov
+    pytest_xdist
+    pytest-django
+    mock
   ];
 
+  checkPhase = ''
+    pytest
+  '';
+
   meta = with lib; {
     description = "Disk and file backed persistent cache";
     homepage = "http://www.grantjenks.com/docs/diskcache/";
diff --git a/pkgs/development/python-modules/fastapi/default.nix b/pkgs/development/python-modules/fastapi/default.nix
index a04e54c0d009..75edf5dc424c 100644
--- a/pkgs/development/python-modules/fastapi/default.nix
+++ b/pkgs/development/python-modules/fastapi/default.nix
@@ -1,22 +1,28 @@
 { lib
 , buildPythonPackage
-, fetchPypi
+, fetchFromGitHub
 , uvicorn
 , starlette
 , pydantic
-, python
 , isPy3k
-, which
+, pytest
+, pytestcov
+, pyjwt
+, passlib
+, aiosqlite
 }:
 
 buildPythonPackage rec {
   pname = "fastapi";
   version = "0.45.0";
+  format = "flit";
   disabled = !isPy3k;
 
-  src = fetchPypi {
-    inherit pname version;
-    sha256 = "44712863ca3899eb812a6869a2efe02d6be6ae972968c76a43d82ec472788f17";
+  src = fetchFromGitHub {
+    owner = "tiangolo";
+    repo = "fastapi";
+    rev = version;
+    sha256 = "1qwh382ny6qa3zi64micdq4j7dc64zv4rfd8g91j0digd4rhs6i1";
   };
 
   propagatedBuildInputs = [
@@ -25,10 +31,24 @@ buildPythonPackage rec {
     pydantic
   ];
 
-  patches = [ ./setup.py.patch ];
+  checkInputs = [
+    pytest
+    pytestcov
+    pyjwt
+    passlib
+    aiosqlite
+  ];
+
+  # starlette pinning kept in place due to 0.12.9 being a hard
+  # dependency luckily fastapi is currently the only dependent on
+  # starlette. Please remove pinning when possible
+  postPatch = ''
+    substituteInPlace pyproject.toml \
+      --replace "pydantic >=0.32.2,<=0.32.2" "pydantic"
+  '';
 
   checkPhase = ''
-    ${python.interpreter} -c "from fastapi import FastAPI; app = FastAPI()"
+    pytest --ignore=tests/test_default_response_class.py
   '';
 
   meta = with lib; {
diff --git a/pkgs/development/python-modules/fastapi/setup.py.patch b/pkgs/development/python-modules/fastapi/setup.py.patch
deleted file mode 100644
index 43661343d744..000000000000
--- a/pkgs/development/python-modules/fastapi/setup.py.patch
+++ /dev/null
@@ -1,13 +0,0 @@
-diff --git a/setup.py b/setup.py
-index ccc3d2b..77ce446 100644
---- a/setup.py
-+++ b/setup.py
-@@ -10,7 +10,7 @@ package_data = \
- {'': ['*']}
- 
- install_requires = \
--['starlette >=0.11.1,<=0.12.0', 'pydantic >=0.30,<=0.30.0']
-+['starlette >=0.11.1', 'pydantic >=0.30']
- 
- extras_require = \
- {'all': ['requests',
diff --git a/pkgs/development/python-modules/fsspec/default.nix b/pkgs/development/python-modules/fsspec/default.nix
index 1be03cd0d2a1..7e0ed8b9712d 100644
--- a/pkgs/development/python-modules/fsspec/default.nix
+++ b/pkgs/development/python-modules/fsspec/default.nix
@@ -1,26 +1,34 @@
 { lib
 , buildPythonPackage
-, fetchPypi
+, fetchFromGitHub
 , pythonOlder
+, pytest
 }:
 
 buildPythonPackage rec {
   pname = "fsspec";
   version = "0.6.2";
-
   disabled = pythonOlder "3.5";
 
-  src = fetchPypi {
-    inherit pname version;
-    sha256 = "ffd7cd5ac32f36698097c3d78c2c433d4c12f7e4bce3a3a4036fd3491188046d";
+  src = fetchFromGitHub {
+    owner = "intake";
+    repo = "filesystem_spec";
+    rev = version;
+    sha256 = "1y3d6xw14rcldz9779ir6mjaff4rk82ch6ahn4y9mya0qglpc31i";
   };
 
-  # no tests
-  doCheck = false;
+  checkInputs = [
+    pytest
+  ];
+
+  checkPhase = ''
+    pytest
+  '';
 
   meta = with lib; {
-    description = "A specification that python filesystems should adhere to.";
-    homepage = "https://github.com/intake/filesystem_spec";
+    description = "A specification that python filesystems should adhere to";
+    homepage = https://github.com/intake/filesystem_spec;
     license = licenses.bsd3;
+    maintainers = [ maintainers.costrouc ];
   };
 }
diff --git a/pkgs/development/python-modules/hstspreload/default.nix b/pkgs/development/python-modules/hstspreload/default.nix
new file mode 100644
index 000000000000..a276bd33b592
--- /dev/null
+++ b/pkgs/development/python-modules/hstspreload/default.nix
@@ -0,0 +1,28 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, isPy27
+}:
+
+buildPythonPackage rec {
+  pname = "hstspreload";
+  version = "2019.12.25";
+  disabled = isPy27;
+
+  src = fetchFromGitHub {
+    owner = "sethmlarson";
+    repo = pname;
+    rev = version;
+    sha256 = "1aa7jccwldxw3s0z668qqb0i0plsark1q3jvkmqkyp645w5bfilk";
+  };
+
+  # tests require network connection
+  doCheck = false;
+
+  meta = with lib; {
+    description = "Chromium HSTS Preload list as a Python package and updated daily";
+    homepage = https://github.com/sethmlarson/hstspreload;
+    license = licenses.bsd3;
+    maintainers = [ maintainers.costrouc ];
+  };
+}
diff --git a/pkgs/development/python-modules/httpx/default.nix b/pkgs/development/python-modules/httpx/default.nix
new file mode 100644
index 000000000000..04a0592d7506
--- /dev/null
+++ b/pkgs/development/python-modules/httpx/default.nix
@@ -0,0 +1,68 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, certifi
+, hstspreload
+, chardet
+, h11
+, h2
+, idna
+, rfc3986
+, sniffio
+, isPy27
+, pytest
+, pytestcov
+, trustme
+, uvicorn
+, trio
+, brotli
+}:
+
+buildPythonPackage rec {
+  pname = "httpx";
+  version = "0.9.5";
+  disabled = isPy27;
+
+  src = fetchFromGitHub {
+    owner = "encode";
+    repo = pname;
+    rev = version;
+    sha256 = "140z2j7b5hlcxvfb433hqv5b8irqa88hpq33lzr9m992djbhj2hb";
+  };
+
+  propagatedBuildInputs = [
+    certifi
+    hstspreload
+    chardet
+    h11
+    h2
+    idna
+    rfc3986
+    sniffio
+  ];
+
+  checkInputs = [
+    pytest
+    pytestcov
+    trustme
+    uvicorn
+    trio
+    brotli
+  ];
+
+  postPatch = ''
+    substituteInPlace setup.py \
+          --replace "h11==0.8.*" "h11"
+  '';
+
+  checkPhase = ''
+    PYTHONPATH=.:$PYTHONPATH pytest
+  '';
+
+  meta = with lib; {
+    description = "The next generation HTTP client";
+    homepage = https://github.com/encode/httpx;
+    license = licenses.bsd3;
+    maintainers = [ maintainers.costrouc ];
+  };
+}
diff --git a/pkgs/development/python-modules/imagecodecs-lite/default.nix b/pkgs/development/python-modules/imagecodecs-lite/default.nix
index c7a6f59091ba..861a0ed0db3d 100644
--- a/pkgs/development/python-modules/imagecodecs-lite/default.nix
+++ b/pkgs/development/python-modules/imagecodecs-lite/default.nix
@@ -10,11 +10,24 @@ buildPythonPackage rec {
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "95d18aa13ceb1b18a6109433b42d054e13b9a295cba96c08ab719f864f589d68";
+    sha256 = "0s4xb17qd7vimc46rafbjnibj4sf0lnv8cwl22k1h6zb7jhqmlcm";
   };
 
-  checkInputs = [ pytest ];
-  propagatedBuildInputs = [ numpy cython ];
+  nativeBuildInputs = [
+    cython
+  ];
+
+  checkInputs = [
+    pytest
+  ];
+
+  propagatedBuildInputs = [
+    numpy
+  ];
+
+  checkPhase = ''
+    pytest
+  '';
 
   meta = with lib; {
     description = "Block-oriented, in-memory buffer transformation, compression, and decompression functions";
diff --git a/pkgs/development/python-modules/orm/default.nix b/pkgs/development/python-modules/orm/default.nix
new file mode 100644
index 000000000000..c2f6bc4fc570
--- /dev/null
+++ b/pkgs/development/python-modules/orm/default.nix
@@ -0,0 +1,43 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, databases
+, typesystem
+, aiosqlite
+, pytest
+, pytestcov
+}:
+
+buildPythonPackage rec {
+  pname = "orm";
+  version = "0.1.5";
+
+  src = fetchFromGitHub {
+    owner = "encode";
+    repo = "orm";
+    rev = version;
+    sha256 = "1g70cr0559iyqfzidwh6n2qq6d4dcnrr4sg0jkn1s4qzka828mj7";
+  };
+
+  propagatedBuildInputs = [
+    databases
+    typesystem
+  ];
+
+  checkInputs = [
+    aiosqlite
+    pytest
+    pytestcov
+  ];
+
+  checkPhase = ''
+    PYTHONPATH=$PYTHONPATH:. pytest
+  '';
+
+  meta = with lib; {
+    description = "An async ORM";
+    homepage = https://github.com/encode/orm;
+    license = licenses.bsd3;
+    maintainers = [ maintainers.costrouc ];
+  };
+}
diff --git a/pkgs/development/python-modules/pydantic/default.nix b/pkgs/development/python-modules/pydantic/default.nix
index 23b6dd3432eb..088c6636fdca 100644
--- a/pkgs/development/python-modules/pydantic/default.nix
+++ b/pkgs/development/python-modules/pydantic/default.nix
@@ -1,21 +1,25 @@
 { lib
 , buildPythonPackage
-, fetchPypi
+, fetchFromGitHub
 , ujson
 , email_validator
 , typing-extensions
 , python
 , isPy3k
+, pytest
+, pytestcov
 }:
 
 buildPythonPackage rec {
   pname = "pydantic";
-  version = "1.2";
+  version = "1.3";
   disabled = !isPy3k;
 
-  src = fetchPypi {
-    inherit pname version;
-    sha256 = "da10b034750addbd95a328654d20364c479f4e2e26e0f72933204d61cbc8fa78";
+  src = fetchFromGitHub {
+    owner = "samuelcolvin";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "0s85nzlsyj97j54zsgv569hkzv617z0vqsifsxkkyiimgbvnx7g8";
   };
 
   propagatedBuildInputs = [
@@ -24,22 +28,13 @@ buildPythonPackage rec {
     typing-extensions
   ];
 
+  checkInputs = [
+    pytest
+    pytestcov
+  ];
+
   checkPhase = ''
-    ${python.interpreter} -c """
-from datetime import datetime
-from typing import List
-from pydantic import BaseModel
-
-class User(BaseModel):
-    id: int
-    name = 'John Doe'
-    signup_ts: datetime = None
-    friends: List[int] = []
-
-external_data = {'id': '123', 'signup_ts': '2017-06-01 12:22', 'friends': [1, '2', b'3']}
-user = User(**external_data)
-assert user.id is "123"
-"""
+    pytest
   '';
 
   meta = with lib; {
diff --git a/pkgs/development/python-modules/pyrabbit2/default.nix b/pkgs/development/python-modules/pyrabbit2/default.nix
new file mode 100644
index 000000000000..36182e9986be
--- /dev/null
+++ b/pkgs/development/python-modules/pyrabbit2/default.nix
@@ -0,0 +1,26 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, requests
+}:
+
+buildPythonPackage rec {
+  pname = "pyrabbit2";
+  version = "1.0.7";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "d27160cb35c096f0072df57307233d01b117a451236e136604a8e51be6f106c0";
+  };
+
+  propagatedBuildInputs = [
+    requests
+  ];
+
+  meta = with lib; {
+    description = "A Pythonic interface to the RabbitMQ Management HTTP API";
+    homepage = https://github.com/deslum/pyrabbit2;
+    license = licenses.mit;
+    maintainers = [ maintainers.costrouc ];
+  };
+}
diff --git a/pkgs/development/python-modules/python-multipart/default.nix b/pkgs/development/python-modules/python-multipart/default.nix
new file mode 100644
index 000000000000..e3e75d886043
--- /dev/null
+++ b/pkgs/development/python-modules/python-multipart/default.nix
@@ -0,0 +1,41 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, pytest
+, pytestcov
+, mock
+, pyyaml
+, six
+}:
+
+buildPythonPackage rec {
+  pname = "python-multipart";
+  version = "0.0.5";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "f7bb5f611fc600d15fa47b3974c8aa16e93724513b49b5f95c81e6624c83fa43";
+  };
+
+  checkInputs = [
+    pytest
+    pytestcov
+    mock
+    pyyaml
+  ];
+
+  propagatedBuildInputs = [
+    six
+  ];
+
+  checkPhase = ''
+    pytest
+  '';
+
+  meta = with lib; {
+    description = "A streaming multipart parser for Python";
+    homepage = https://github.com/andrew-d/python-multipart;
+    license = licenses.asl20;
+    maintainers = [ maintainers.costrouc ];
+  };
+}
diff --git a/pkgs/development/python-modules/starlette/default.nix b/pkgs/development/python-modules/starlette/default.nix
index b0e99f796e77..a2170db1bd48 100644
--- a/pkgs/development/python-modules/starlette/default.nix
+++ b/pkgs/development/python-modules/starlette/default.nix
@@ -9,11 +9,13 @@
 , pyyaml
 , requests
 , ujson
+, python-multipart
 , pytest
-, python
 , uvicorn
 , isPy27
 , darwin
+, databases
+, aiosqlite
 }:
 
 buildPythonPackage rec {
@@ -35,13 +37,17 @@ buildPythonPackage rec {
     requests
     ujson
     uvicorn
+    python-multipart
+    databases
   ] ++ stdenv.lib.optional stdenv.isDarwin [ darwin.apple_sdk.frameworks.ApplicationServices ];
 
+  checkInputs = [
+    pytest
+    aiosqlite
+  ];
+
   checkPhase = ''
-    ${python.interpreter} -c """
-from starlette.applications import Starlette
-app = Starlette(debug=True)
-"""
+    pytest --ignore=tests/test_graphql.py
   '';
 
   meta = with lib; {
diff --git a/pkgs/development/python-modules/tifffile/default.nix b/pkgs/development/python-modules/tifffile/default.nix
index 1f0e89d03ace..fbf36b4ef97e 100644
--- a/pkgs/development/python-modules/tifffile/default.nix
+++ b/pkgs/development/python-modules/tifffile/default.nix
@@ -1,7 +1,14 @@
-{ lib, fetchPypi, buildPythonPackage, isPy27, isPy3k
-, numpy, enum34, futures, pathlib
-, pytest
+{ lib
+, fetchPypi
+, buildPythonPackage
+, isPy27
+, isPy3k
+, numpy
 , imagecodecs-lite
+, enum34
+, futures
+, pathlib
+, pytest
 }:
 
 buildPythonPackage rec {
@@ -18,14 +25,24 @@ buildPythonPackage rec {
   # Missing dependencies: imagecodecs, czifile, cmapfile, oiffile, lfdfiles
   # and test data missing from PyPI tarball
   doCheck = false;
-  checkInputs = [ pytest ];
+
+  checkInputs = [
+    pytest
+  ];
+
   checkPhase = ''
     pytest
   '';
 
-  propagatedBuildInputs = [ numpy ]
-    ++ lib.optionals isPy27 [ futures enum34 pathlib ]
-    ++ lib.optionals isPy3k [ imagecodecs-lite ];
+  propagatedBuildInputs = [
+    numpy
+  ] ++ lib.optionals isPy3k [
+    imagecodecs-lite
+  ] ++ lib.optionals isPy27 [
+    futures
+    enum34
+    pathlib
+  ];
 
   meta = with lib; {
     description = "Read and write image data from and to TIFF files.";
diff --git a/pkgs/development/python-modules/toggl-cli/default.nix b/pkgs/development/python-modules/toggl-cli/default.nix
index 2c43ebf2c7e7..6834876d8f81 100644
--- a/pkgs/development/python-modules/toggl-cli/default.nix
+++ b/pkgs/development/python-modules/toggl-cli/default.nix
@@ -1,5 +1,6 @@
 { stdenv, buildPythonPackage, fetchPypi, twine, pbr, click, click-completion, validate-email,
-pendulum, ptable, requests, inquirer, pythonOlder, pytest, pytestcov, pytest-mock, faker, factory_boy }:
+pendulum, ptable, requests, inquirer, pythonOlder, pytest, pytestcov, pytest-mock, faker, factory_boy,
+setuptools }:
 
 
 buildPythonPackage rec {
@@ -16,6 +17,7 @@ buildPythonPackage rec {
 
   postPatch = ''
    substituteInPlace requirements.txt \
+     --replace "pendulum==2.0.4" "pendulum>=2.0.4" \
      --replace "click-completion==0.5.0" "click-completion>=0.5.0" \
      --replace "pbr==5.1.2" "pbr>=5.1.2" \
      --replace "inquirer==2.5.1" "inquirer>=2.5.1"
@@ -37,6 +39,7 @@ buildPythonPackage rec {
   '';
 
   propagatedBuildInputs = [
+    setuptools
     click
     click-completion
     validate-email
diff --git a/pkgs/development/python-modules/trezor/default.nix b/pkgs/development/python-modules/trezor/default.nix
index cdf29cb565d3..2d40ad971dbe 100644
--- a/pkgs/development/python-modules/trezor/default.nix
+++ b/pkgs/development/python-modules/trezor/default.nix
@@ -16,13 +16,13 @@
 
 buildPythonPackage rec {
   pname = "trezor";
-  version = "0.11.5";
+  version = "0.11.6";
 
   disabled = !isPy3k;
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "cd8aafd70a281daa644c4a3fb021ffac20b7a88e86226ecc8bb3e78e1734a184";
+    sha256 = "1i73j812i0dgjw9n106pipc6qksd9cgs59d0as0b4j5iyl0087hh";
   };
 
   propagatedBuildInputs = [ typing-extensions protobuf hidapi ecdsa mnemonic requests pyblake2 click construct libusb1 rlp shamir-mnemonic trezor-udev-rules ];
diff --git a/pkgs/development/python-modules/typesystem/default.nix b/pkgs/development/python-modules/typesystem/default.nix
new file mode 100644
index 000000000000..8a66d6cbcc9f
--- /dev/null
+++ b/pkgs/development/python-modules/typesystem/default.nix
@@ -0,0 +1,44 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, isPy27
+, pytest
+, pytestcov
+, jinja2
+, pyyaml
+}:
+
+buildPythonPackage rec {
+  pname = "typesystem";
+  version = "0.2.4";
+  disabled = isPy27;
+
+  src = fetchFromGitHub {
+    owner = "encode";
+    repo = pname;
+    rev = version;
+    sha256 = "1k0jwcky17zwaz2vx4x2zbsnp270g4mgn7kx5bpl8jgx76qmsnba";
+  };
+
+  propagatedBuildInputs = [
+    jinja2
+    pyyaml
+  ];
+
+  checkInputs = [
+    pytest
+    pytestcov
+  ];
+
+  # for some reason jinja2 not picking up forms directory (1% of tests)
+  checkPhase = ''
+    pytest --ignore=tests/test_forms.py
+  '';
+
+  meta = with lib; {
+    description = "A type system library for Python";
+    homepage = https://github.com/encode/typesystem;
+    license = licenses.bsd3;
+    maintainers = [ maintainers.costrouc ];
+  };
+}
diff --git a/pkgs/development/tools/build-managers/meson/default.nix b/pkgs/development/tools/build-managers/meson/default.nix
index 49d7287087fd..e4d4994a7814 100644
--- a/pkgs/development/tools/build-managers/meson/default.nix
+++ b/pkgs/development/tools/build-managers/meson/default.nix
@@ -10,11 +10,12 @@
 let
   # See https://mesonbuild.com/Reference-tables.html#cpu-families
   cpuFamilies = {
-    aarch64 = "aarch64";
-    armv6l  = "arm";
-    armv7l  = "arm";
-    i686    = "x86";
-    x86_64  = "x86_64";
+    aarch64  = "aarch64";
+    armv5tel = "arm";
+    armv6l   = "arm";
+    armv7l   = "arm";
+    i686     = "x86";
+    x86_64   = "x86_64";
   };
 in
 python3Packages.buildPythonApplication rec {
diff --git a/pkgs/development/tools/misc/openocd/default.nix b/pkgs/development/tools/misc/openocd/default.nix
index eea27b3e51ff..854da8801181 100644
--- a/pkgs/development/tools/misc/openocd/default.nix
+++ b/pkgs/development/tools/misc/openocd/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, fetchurl, libftdi1, libusb1, pkgconfig, hidapi }:
+{ stdenv, lib, fetchurl, fetchpatch, libftdi1, libusb1, pkgconfig, hidapi }:
 
 stdenv.mkDerivation rec {
   pname = "openocd";
@@ -9,6 +9,15 @@ stdenv.mkDerivation rec {
     sha256 = "1bhn2c85rdz4gf23358kg050xlzh7yxbbwmqp24c0akmh3bff4kk";
   };
 
+  patches = [
+    # Fix FTDI channel configuration for SheevaPlug
+    # https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=837989
+    (fetchpatch {
+      url = "https://salsa.debian.org/electronics-team/openocd/raw/9a94335daa332a37a51920f87afbad4d36fad2d5/debian/patches/fix-sheeva.patch";
+      sha256 = "01x021fagwvgxdpzk7psap7ryqiya4m4mi4nqr27asbmb3q46g5r";
+    })
+  ];
+
   nativeBuildInputs = [ pkgconfig ];
   buildInputs = [ libftdi1 libusb1 hidapi ];
 
diff --git a/pkgs/development/tools/misc/texinfo/common.nix b/pkgs/development/tools/misc/texinfo/common.nix
index 7741f2d4ffbc..40dafe27da2a 100644
--- a/pkgs/development/tools/misc/texinfo/common.nix
+++ b/pkgs/development/tools/misc/texinfo/common.nix
@@ -6,6 +6,10 @@
 , interactive ? false, ncurses, procps
 }:
 
+let
+  crossBuildTools = interactive && stdenv.hostPlatform != stdenv.buildPlatform;
+in
+
 with stdenv.lib;
 
 stdenv.mkDerivation {
@@ -17,7 +21,13 @@ stdenv.mkDerivation {
     inherit sha256;
   };
 
-  patches = optional (version == "6.5") ./perl.patch;
+  patches = optional (version == "6.5") ./perl.patch
+    ++ optional crossBuildTools ./cross-tools-flags.patch;
+
+  # ncurses is required to build `makedoc'
+  # this feature is introduced by the ./cross-tools-flags.patch
+  NATIVE_TOOLS_CFLAGS = if crossBuildTools then "-I${getDev buildPackages.ncurses}/include" else null;
+  NATIVE_TOOLS_LDFLAGS = if crossBuildTools then "-L${getLib buildPackages.ncurses}/lib" else null;
 
   # We need a native compiler to build perl XS extensions
   # when cross-compiling.
diff --git a/pkgs/development/tools/misc/texinfo/cross-tools-flags.patch b/pkgs/development/tools/misc/texinfo/cross-tools-flags.patch
new file mode 100644
index 000000000000..f0e4230d7ec2
--- /dev/null
+++ b/pkgs/development/tools/misc/texinfo/cross-tools-flags.patch
@@ -0,0 +1,12 @@
+diff -ur texinfo-6.5/configure texinfo-6.5-patched/configure
+--- texinfo-6.5/configure	2017-09-13 03:50:18.000000000 +0900
++++ texinfo-6.5-patched/configure	2019-12-28 17:39:06.692818866 +0900
+@@ -23281,7 +23281,7 @@
+   # env -i gives this build host configure a clean environment;
+   # consequently, we have to re-initialize $PATH.
+   env -i CC="$BUILD_CC" AR="$BUILD_AR" RANLIB="$BUILD_RANLIB" \
+-      PATH="$PATH" \
++      PATH="$PATH" CFLAGS="$NATIVE_TOOLS_CFLAGS" LDFLAGS="$NATIVE_TOOLS_LDFLAGS" \
+       tools_only=1 \
+     ${confdir}/configure --build=${build} --host=${build} \
+                          --disable-rpath --disable-nls
diff --git a/pkgs/games/steam/chrootenv.nix b/pkgs/games/steam/chrootenv.nix
index 426be1f214a0..9229f4fbc93e 100644
--- a/pkgs/games/steam/chrootenv.nix
+++ b/pkgs/games/steam/chrootenv.nix
@@ -79,6 +79,7 @@ in buildFHSUserEnv rec {
 
     # Not formally in runtime but needed by some games
     at-spi2-atk
+    at-spi2-core   # CrossCode
     gst_all_1.gstreamer
     gst_all_1.gst-plugins-ugly
     libdrm
diff --git a/pkgs/misc/uboot/default.nix b/pkgs/misc/uboot/default.nix
index 01a84230dbb6..06a5c7c441cc 100644
--- a/pkgs/misc/uboot/default.nix
+++ b/pkgs/misc/uboot/default.nix
@@ -300,7 +300,7 @@ in {
   ubootSheevaplug = buildUBoot {
     defconfig = "sheevaplug_defconfig";
     extraMeta.platforms = ["armv5tel-linux"];
-    filesToInstall = ["u-boot.bin"];
+    filesToInstall = ["u-boot.kwb"];
   };
 
   ubootSopine = buildUBoot {
diff --git a/pkgs/os-specific/linux/dpdk/default.nix b/pkgs/os-specific/linux/dpdk/default.nix
index 104fccd6955b..414f276a2109 100644
--- a/pkgs/os-specific/linux/dpdk/default.nix
+++ b/pkgs/os-specific/linux/dpdk/default.nix
@@ -7,16 +7,15 @@
 , shared ? false }:
 
 let
-  kver = kernel.modDirVersion or null;
   mod = kernel != null;
 
 in stdenv.mkDerivation rec {
   name = "dpdk-${version}" + lib.optionalString mod "-${kernel.version}";
-  version = "19.08.2";
+  version = "19.11";
 
   src = fetchurl {
     url = "https://fast.dpdk.org/rel/dpdk-${version}.tar.xz";
-    sha256 = "141bqqy4w6nzs9z70x7yv94a4gmxjfal46pxry9bwdh3zi1jwnyd";
+    sha256 = "1aqjn6bm9miv3v2rbqi1rh1c19wa8nip9fvnqaqpnrs3i2b36wa6";
   };
 
   nativeBuildInputs = [
@@ -44,13 +43,23 @@ in stdenv.mkDerivation rec {
 
   mesonFlags = [
     "-Denable_docs=true"
-    "-Denable_kmods=${if kernel != null then "true" else "false"}"
-  ]
-  ++ lib.optionals (shared == false) [
-    "-Ddefault_library=static"
+    "-Denable_kmods=${if mod then "true" else "false"}"
   ]
+  ++ lib.optional (!shared) "-Ddefault_library=static"
   ++ lib.optional stdenv.isx86_64 "-Dmachine=nehalem"
-  ++ lib.optional (kernel != null) "-Dkernel_dir=${kernel.dev}/lib/modules/${kernel.modDirVersion}";
+  ++ lib.optional mod "-Dkernel_dir=${placeholder "kmod"}/lib/modules/${kernel.modDirVersion}";
+
+  # dpdk meson script does not support separate kernel source and installion
+  # dirs (except via destdir), so we temporarily link the former into the latter.
+  preConfigure = lib.optionalString mod ''
+    mkdir -p $kmod/lib/modules/${kernel.modDirVersion}
+    ln -sf ${kernel.dev}/lib/modules/${kernel.modDirVersion}/build \
+      $kmod/lib/modules/${kernel.modDirVersion}
+  '';
+
+  postBuild = lib.optionalString mod ''
+    rm -f $kmod/lib/modules/${kernel.modDirVersion}/build
+  '';
 
   outputs = [ "out" ] ++ lib.optional mod "kmod";
 
diff --git a/pkgs/os-specific/linux/odp-dpdk/default.nix b/pkgs/os-specific/linux/odp-dpdk/default.nix
index 0bdc22da918d..66185de03a16 100644
--- a/pkgs/os-specific/linux/odp-dpdk/default.nix
+++ b/pkgs/os-specific/linux/odp-dpdk/default.nix
@@ -5,7 +5,7 @@
     version = "18.11.5";
     src = fetchurl {
       url = "https://fast.dpdk.org/rel/dpdk-${version}.tar.xz";
-      sha256 = "0000000000000000000000000000000000000000000000000000";
+      sha256 = "1n6nfaj7703l19jcw540lm8avni48hj9q1rq4mfp8b8gd4zjprj0";
     };
   });
 
@@ -46,6 +46,8 @@ in stdenv.mkDerivation rec {
   # binaries will segfault otherwise
   dontStrip = true;
 
+  enableParallelBuilding = true;
+
   meta = with stdenv.lib; {
     description = "Open Data Plane optimized for DPDK";
     homepage = https://www.opendataplane.org;
diff --git a/pkgs/os-specific/linux/pktgen/configure.patch b/pkgs/os-specific/linux/pktgen/configure.patch
new file mode 100644
index 000000000000..b4933313a51a
--- /dev/null
+++ b/pkgs/os-specific/linux/pktgen/configure.patch
@@ -0,0 +1,17 @@
+1. librte_process_info does not exist.
+2. lua5.3 library is liblua.
+3. app/meson.build uses undeclared drivers_install_subdir.
+--- a/lib/common/meson.build
++++ b/lib/common/meson.build
+@@ -34,1 +34,1 @@
+-libs = ['eal', 'kvargs', 'cmdline', 'process_info']
++libs = ['eal', 'kvargs', 'cmdline']
+--- a/lib/lua/meson.build
++++ b/lib/lua/meson.build
+@@ -31 +31 @@ endforeach
+-ext_deps += cc.find_library('lua5.3', required: true)
++ext_deps += cc.find_library('lua', required: true)
+--- a/meson_options.txt
++++ b/meson_options.txt
+@@ -0,0 +1,1 @@
++option('drivers_install_subdir', type: 'string', value: '')
diff --git a/pkgs/os-specific/linux/pktgen/default.nix b/pkgs/os-specific/linux/pktgen/default.nix
index fd57fa6e37ce..171e5d3b43ae 100644
--- a/pkgs/os-specific/linux/pktgen/default.nix
+++ b/pkgs/os-specific/linux/pktgen/default.nix
@@ -1,41 +1,40 @@
-{ stdenv, lib, fetchurl, pkgconfig
-, dpdk, libpcap, lua5_3, numactl, utillinux
+{ stdenv, lib, fetchurl, meson, ninja, pkgconfig
+, dpdk, libbsd, libpcap, lua5_3, numactl, utillinux
 , gtk2, which, withGtk ? false
 }:
 
 stdenv.mkDerivation rec {
   pname = "pktgen";
-  version = "3.7.2";
+  version = "19.12.0";
 
   src = fetchurl {
     url = "http://dpdk.org/browse/apps/pktgen-dpdk/snapshot/${pname}-${version}.tar.xz";
-    sha256 = "03k7h4j2lsrh6b7477hgn87ljrjh2673ncffx9v261bx1ns54y7w";
+    sha256 = "1clfviz1qa4hysslcg6i29vsxwl9f6j1y7zf9wwx9br3yq08x956";
   };
 
-  nativeBuildInputs = [ pkgconfig ];
+  nativeBuildInputs = [ meson ninja pkgconfig ];
 
   buildInputs =
-    [ dpdk libpcap lua5_3 numactl which ]
+    [ dpdk libbsd libpcap lua5_3 numactl which ]
     ++ stdenv.lib.optionals withGtk [gtk2];
 
-  RTE_SDK = "${dpdk}/share/dpdk";
-  RTE_TARGET = "x86_64-native-linuxapp-gcc";
+  RTE_SDK = dpdk;
   GUI = stdenv.lib.optionalString withGtk "true";
 
   NIX_CFLAGS_COMPILE = [ "-msse3" ];
 
-  postPatch = let dpdkMajor = lib.versions.major dpdk.version; in ''
+  patches = [ ./configure.patch ];
+
+  postPatch = ''
     substituteInPlace lib/common/lscpu.h --replace /usr/bin/lscpu ${utillinux}/bin/lscpu
   '';
 
-  installPhase = ''
-    install -d $out/bin
-    install -m 0755 app/${RTE_TARGET}/pktgen $out/bin
-    install -m 0644 Pktgen.lua $out/bin
+  postInstall = ''
+    # meson installs unneeded files with conflicting generic names, such as
+    # include/cli.h and lib/liblua.so.
+    rm -rf $out/include $out/lib
   '';
 
-  enableParallelBuilding = true;
-
   meta = with stdenv.lib; {
     description = "Traffic generator powered by DPDK";
     homepage = http://dpdk.org/;
diff --git a/pkgs/tools/filesystems/mtdutils/default.nix b/pkgs/tools/filesystems/mtdutils/default.nix
index 0461c732e1a6..3b355c92226b 100644
--- a/pkgs/tools/filesystems/mtdutils/default.nix
+++ b/pkgs/tools/filesystems/mtdutils/default.nix
@@ -9,13 +9,16 @@ stdenv.mkDerivation rec {
     sha256 = "1lijl89l7hljx8xx70vrz9srd3h41v5gh4b0lvqnlv831yvyh5cd";
   };
 
-  nativeBuildInputs = [ autoreconfHook cmocka pkgconfig ];
+  nativeBuildInputs = [ autoreconfHook pkgconfig ] ++ stdenv.lib.optional doCheck cmocka;
   buildInputs = [ acl libuuid lzo zlib zstd ];
 
-  configureFlags = [ "--enable-unit-tests" "--enable-tests" ];
+  configureFlags = [
+    (stdenv.lib.enableFeature doCheck "unit-tests")
+    (stdenv.lib.enableFeature doCheck "tests")
+  ];
   enableParallelBuilding = true;
 
-  doCheck = true;
+  doCheck = stdenv.hostPlatform == stdenv.buildPlatform;
 
   meta = {
     description = "Tools for MTD filesystems";
diff --git a/pkgs/tools/misc/topgrade/default.nix b/pkgs/tools/misc/topgrade/default.nix
index 3adf37c22182..db25ec9d366c 100644
--- a/pkgs/tools/misc/topgrade/default.nix
+++ b/pkgs/tools/misc/topgrade/default.nix
@@ -2,16 +2,16 @@
 
 rustPlatform.buildRustPackage rec {
   pname = "topgrade";
-  version = "3.5.0";
+  version = "3.6.0";
 
   src = fetchFromGitHub {
     owner = "r-darwish";
     repo = pname;
     rev = "v${version}";
-    sha256 = "15w1qi38dsx573nadqpvarxx63xla53w775fwkdds2iyspaljsg6";
+    sha256 = "1pr8bwwxp8zvn89ldsb0qy5asx59kpd7dsp7sjmgnbj2ddizl05n";
   };
 
-  cargoSha256 = "0xhrgs2rpkgjzgsipq5rb3fmqwvxrl2wi0fly1xaa6p304k1710m";
+  cargoSha256 = "1f5s8nxl450vpfhvshiwvm49q6ph79vb40qqiz0a2i6jdrzhphq3";
 
   meta = with stdenv.lib; {
     description = "Upgrade all the things";
diff --git a/pkgs/tools/package-management/nix/default.nix b/pkgs/tools/package-management/nix/default.nix
index ce2936f96f3f..33ec396e5d22 100644
--- a/pkgs/tools/package-management/nix/default.nix
+++ b/pkgs/tools/package-management/nix/default.nix
@@ -57,7 +57,7 @@ common =
       propagatedBuildInputs = [ boehmgc ];
 
       # Seems to be required when using std::atomic with 64-bit types
-      NIX_LDFLAGS = lib.optionalString (stdenv.hostPlatform.system == "armv6l-linux") "-latomic";
+      NIX_LDFLAGS = lib.optionalString (stdenv.hostPlatform.system == "armv5tel-linux" || stdenv.hostPlatform.system == "armv6l-linux") "-latomic";
 
       preConfigure =
         # Copy libboost_context so we don't get all of Boost in our closure.
diff --git a/pkgs/tools/security/afl/README.md b/pkgs/tools/security/afl/README.md
index 0b0d4e80fbca..180cad6bc4ca 100644
--- a/pkgs/tools/security/afl/README.md
+++ b/pkgs/tools/security/afl/README.md
@@ -4,12 +4,12 @@ Updating the QEMU patches
 When updating to the latest American Fuzzy Lop, make sure to check for
 any new patches to qemu for binary fuzzing support:
 
-https://github.com/mirrorer/afl/tree/master/qemu_mode
+https://github.com/google/AFL/tree/master/qemu_mode
 
 Be sure to check the build script and make sure it's also using the
 right QEMU version and options in `qemu.nix`:
 
-https://github.com/mirrorer/afl/blob/master/qemu_mode/build_qemu_support.sh
+https://github.com/google/AFL/blob/master/qemu_mode/build_qemu_support.sh
 
 `afl-config.h`, `afl-types.h`, and `afl-qemu-cpu-inl.h` are part of
 the afl source code, and copied from `config.h`, `types.h` and
diff --git a/pkgs/tools/security/afl/default.nix b/pkgs/tools/security/afl/default.nix
index 05866792af68..df5e3728943e 100644
--- a/pkgs/tools/security/afl/default.nix
+++ b/pkgs/tools/security/afl/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, callPackage, makeWrapper
+{ stdenv, fetchFromGitHub, callPackage, makeWrapper
 , clang, llvm, which, libcgroup
 }:
 
@@ -9,11 +9,13 @@ let
     else throw "afl: no support for ${stdenv.hostPlatform.system}!";
   afl = stdenv.mkDerivation rec {
     pname = "afl";
-    version = "2.52b";
+    version = "2.56b";
 
-    src = fetchurl {
-      url    = "http://lcamtuf.coredump.cx/afl/releases/${pname}-${version}.tgz";
-      sha256 = "0ig0ij4n1pwry5dw1hk4q88801jzzy2cric6y2gd6560j55lnqa3";
+    src = fetchFromGitHub {
+      owner = "google";
+      repo = pname;
+      rev = "v${version}";
+      sha256 = "1q1g59gkm48aa4cg9h70jx4i2gapmypgp5rzs156b2avd95vwkn1";
     };
     enableParallelBuilding = true;
 
diff --git a/pkgs/tools/security/afl/libdislocator.nix b/pkgs/tools/security/afl/libdislocator.nix
index 415fa82f2ec6..953c59e435cb 100644
--- a/pkgs/tools/security/afl/libdislocator.nix
+++ b/pkgs/tools/security/afl/libdislocator.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   pname = "libdislocator";
 
   src = afl.src;
-  sourceRoot = "${afl.name}/libdislocator";
+  sourceRoot = "${afl.src.name}/libdislocator";
 
   makeFlags = [ "PREFIX=$(out)" ];
 
diff --git a/pkgs/tools/security/afl/qemu-patches/qemu-2.10.0-glibc-2.27.patch b/pkgs/tools/security/afl/qemu-patches/qemu-2.10.0-glibc-2.27.patch
deleted file mode 100644
index 6cc663dc1fb9..000000000000
--- a/pkgs/tools/security/afl/qemu-patches/qemu-2.10.0-glibc-2.27.patch
+++ /dev/null
@@ -1,28 +0,0 @@
-A modified version of qemu commit 75e5b70e6b5dcc4f2219992d7cffa462aa406af0
-diff --git a/configure b/configure
-index 9c8aa5a..99ccc17 100755
---- a/configure
-+++ b/configure
-@@ -3855,7 +3855,7 @@ fi
- # check if memfd is supported
- memfd=no
- cat > $TMPC << EOF
--#include <sys/memfd.h>
-+#include <sys/mman.h>
- 
- int main(void)
- {
-diff --git a/util/memfd.c b/util/memfd.c
-index 4571d1a..412e94a 100644
---- a/util/memfd.c
-+++ b/util/memfd.c
-@@ -31,9 +31,7 @@
- 
- #include "qemu/memfd.h"
- 
--#ifdef CONFIG_MEMFD
--#include <sys/memfd.h>
--#elif defined CONFIG_LINUX
-+#if defined CONFIG_LINUX && !defined CONFIG_MEMFD
- #include <sys/syscall.h>
- #include <asm/unistd.h>
diff --git a/pkgs/tools/security/afl/qemu.nix b/pkgs/tools/security/afl/qemu.nix
index d80d301351f4..479de4b41850 100644
--- a/pkgs/tools/security/afl/qemu.nix
+++ b/pkgs/tools/security/afl/qemu.nix
@@ -6,7 +6,6 @@ with stdenv.lib;
 
 let
   qemuName = "qemu-2.10.0";
-  aflName = afl.name;
   cpuTarget = if stdenv.hostPlatform.system == "x86_64-linux" then "x86_64-linux-user"
     else if stdenv.hostPlatform.system == "i686-linux" then "i386-linux-user"
     else throw "afl: no support for ${stdenv.hostPlatform.system}!";
@@ -25,12 +24,12 @@ stdenv.mkDerivation {
   sourceRoot = qemuName;
 
   postUnpack = ''
-    cp ${aflName}/types.h $sourceRoot/afl-types.h
-    substitute ${aflName}/config.h $sourceRoot/afl-config.h \
+    cp ${afl.src.name}/types.h $sourceRoot/afl-types.h
+    substitute ${afl.src.name}/config.h $sourceRoot/afl-config.h \
       --replace "types.h" "afl-types.h"
-    substitute ${aflName}/qemu_mode/patches/afl-qemu-cpu-inl.h $sourceRoot/afl-qemu-cpu-inl.h \
+    substitute ${afl.src.name}/qemu_mode/patches/afl-qemu-cpu-inl.h $sourceRoot/afl-qemu-cpu-inl.h \
       --replace "../../config.h" "afl-config.h"
-    substituteInPlace ${aflName}/qemu_mode/patches/cpu-exec.diff \
+    substituteInPlace ${afl.src.name}/qemu_mode/patches/cpu-exec.diff \
       --replace "../patches/afl-qemu-cpu-inl.h" "afl-qemu-cpu-inl.h"
   '';
 
@@ -46,12 +45,13 @@ stdenv.mkDerivation {
 
   patches = [
     # patches extracted from afl source
-    "../${aflName}/qemu_mode/patches/cpu-exec.diff"
-    "../${aflName}/qemu_mode/patches/elfload.diff"
-    "../${aflName}/qemu_mode/patches/syscall.diff"
+    "../${afl.src.name}/qemu_mode/patches/cpu-exec.diff"
+    "../${afl.src.name}/qemu_mode/patches/elfload.diff"
+    "../${afl.src.name}/qemu_mode/patches/syscall.diff"
+    "../${afl.src.name}/qemu_mode/patches/configure.diff"
+    "../${afl.src.name}/qemu_mode/patches/memfd.diff"
     # nix-specific patches to make installation more well-behaved
     ./qemu-patches/no-etc-install.patch
-    ./qemu-patches/qemu-2.10.0-glibc-2.27.patch
   ];
 
   configureFlags =
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index faa2b1695fcf..8b6274ed4f71 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -556,6 +556,8 @@ in {
     inherit (pkgs.llvmPackages) openmp libcxx libcxxabi;
   };
 
+  databases = callPackage ../development/python-modules/databases { };
+
   datamodeldict = callPackage ../development/python-modules/datamodeldict { };
 
   datasette = callPackage ../development/python-modules/datasette { };
@@ -1460,16 +1462,22 @@ in {
 
   aiohttp-swagger = callPackage ../development/python-modules/aiohttp-swagger { };
 
+  aiomysql = callPackage ../development/python-modules/aiomysql { };
+
   aioprocessing = callPackage ../development/python-modules/aioprocessing { };
 
   aioresponses = callPackage ../development/python-modules/aioresponses { };
 
+  aiosqlite = callPackage ../development/python-modules/aiosqlite { };
+
   aiorpcx = callPackage ../development/python-modules/aiorpcx { };
 
   aiosmtpd = callPackage ../development/python-modules/aiosmtpd { };
 
   aiounifi = callPackage ../development/python-modules/aiounifi { };
 
+  aiounittest = callPackage ../development/python-modules/aiounittest { };
+
   aiozeroconf = callPackage ../development/python-modules/aiozeroconf { };
 
   ajpy = callPackage ../development/python-modules/ajpy { };
@@ -2626,10 +2634,14 @@ in {
 
   hsaudiotag3k = callPackage ../development/python-modules/hsaudiotag3k { };
 
+  hstspreload = callPackage ../development/python-modules/hstspreload { };
+
   htmlmin = callPackage ../development/python-modules/htmlmin {};
 
   httpauth = callPackage ../development/python-modules/httpauth { };
 
+  httpx = callPackage ../development/python-modules/httpx { };
+
   idna-ssl = callPackage ../development/python-modules/idna-ssl { };
 
   identify = callPackage ../development/python-modules/identify { };
@@ -4325,6 +4337,8 @@ in {
 
   orderedset = callPackage ../development/python-modules/orderedset { };
 
+  python-multipart = callPackage ../development/python-modules/python-multipart { };
+
   python-otr = callPackage ../development/python-modules/python-otr { };
 
   plone-testing = callPackage ../development/python-modules/plone-testing { };
@@ -4373,6 +4387,8 @@ in {
 
   fasteners = callPackage ../development/python-modules/fasteners { };
 
+  aiocontextvars = callPackage ../development/python-modules/aiocontextvars { };
+
   aioeventlet = callPackage ../development/python-modules/aioeventlet { };
 
   aiokafka = callPackage ../development/python-modules/aiokafka { };
@@ -4724,6 +4740,8 @@ in {
 
   pyqrcode = callPackage ../development/python-modules/pyqrcode { };
 
+  pyrabbit2 = callPackage ../development/python-modules/pyrabbit2 { };
+
   pyrr = callPackage ../development/python-modules/pyrr { };
 
   pysha3 = callPackage ../development/python-modules/pysha3 { };
@@ -5125,6 +5143,8 @@ in {
 
   typesentry = callPackage ../development/python-modules/typesentry { };
 
+  typesystem = callPackage ../development/python-modules/typesystem { };
+
   s3transfer = callPackage ../development/python-modules/s3transfer { };
 
   seqdiag = callPackage ../development/python-modules/seqdiag { };
@@ -6096,6 +6116,8 @@ in {
 
   ofxtools = callPackage ../development/python-modules/ofxtools { };
 
+  orm = callPackage ../development/python-modules/orm { };
+
   basemap = callPackage ../development/python-modules/basemap { };
 
   dict2xml = callPackage ../development/python-modules/dict2xml { };