Merge branch 'master' into staging-next

minor conflict: rust update vs. darwin fixes for it
  (not tested but seems quite OK)

pkgs/development/python-modules/block-io/default.nix

@@ -20,13 +20,16 @@ buildPythonPackage rec {
 
   preConfigure = ''
     substituteInPlace setup.py \
-      --replace "ecdsa==0.13" "ecdsa>=0.13"
+      --replace "ecdsa==0.13" "ecdsa>=0.13" \
+      --replace "base58==1.0.3" "base58>=1.0.3"
   '';
 
   # Tests needs a BlockIO API key to run properly
   # https://github.com/BlockIo/block_io-python/blob/79006bc8974544b70a2d8e9f19c759941d32648e/test.py#L18
   doCheck = false;
 
+  pythonImportsCheck = [ "block_io" ];
+
   meta = with stdenv.lib; {
     description = "Integrate Bitcoin, Dogecoin and Litecoin in your Python applications using block.io";
     homepage = "https://github.com/BlockIo/block_io-python";

pkgs/development/python-modules/yamale/default.nix

@@ -0,0 +1,38 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, isPy3k
+, pytest
+, pyyaml
+, ruamel_yaml
+}:
+
+buildPythonPackage rec {
+  pname = "yamale";
+  version = "3.0.4";
+
+  disabled = !isPy3k;
+
+  src = fetchFromGitHub {
+    owner = "23andMe";
+    repo = pname;
+    rev = version;
+    sha256 = "1xjvah4r3gpwk4zxql3c9jpllb34k175fm6iq1zvsd2vv2fwf8s2";
+  };
+
+  propagatedBuildInputs = [
+    pyyaml
+    ruamel_yaml
+  ];
+
+  checkInputs = [
+    pytest
+  ];
+
+  meta = with lib; {
+    description = "A schema and validator for YAML.";
+    homepage = "https://github.com/23andMe/Yamale";
+    license = licenses.mit;
+    maintainers = with maintainers; [ rtburns-jpl ];
+  };
+}