python2Packages.imbalanced-learn: freeze at 0.4.3

pkgs/development/python-modules/imbalanced-learn/0.4.nix

@@ -0,0 +1,29 @@
+{ stdenv, buildPythonPackage, fetchPypi, scikitlearn, pandas, nose, pytest }:
+
+buildPythonPackage rec {
+  pname = "imbalanced-learn";
+  version = "0.4.3";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "5bd9e86e40ce4001a57426541d7c79b18143cbd181e3330c1a3e5c5c43287083";
+  };
+
+  propagatedBuildInputs = [ scikitlearn ];
+  checkInputs = [ nose pytest pandas ];
+  checkPhase = ''
+    export HOME=$PWD
+    # skip some tests that fail because of minimal rounding errors
+    # or large dependencies
+    py.test imblearn -k 'not classification \
+                         and not _generator \
+                         and not _forest \
+                         and not wrong_memory'
+  '';
+
+  meta = with stdenv.lib; {
+    description = "Library offering a number of re-sampling techniques commonly used in datasets showing strong between-class imbalance";
+    homepage = https://github.com/scikit-learn-contrib/imbalanced-learn;
+    license = licenses.mit;
+  };
+}

pkgs/top-level/python-packages.nix

@@ -2353,7 +2353,11 @@ in {
 
   image-match = callPackage ../development/python-modules/image-match { };
 
-  imbalanced-learn = callPackage ../development/python-modules/imbalanced-learn { };
+  imbalanced-learn =
+    if isPy27 then
+      callPackage ../development/python-modules/imbalanced-learn/0.4.nix { }
+    else
+      callPackage ../development/python-modules/imbalanced-learn { };
 
   immutables = callPackage ../development/python-modules/immutables {};