python3Packages.poetry: use pyproject

Note we should not import modules from within a derivation.
This will need to be fixed.

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

@@ -29,6 +29,7 @@ let
   });
 
   jsonschema3 = callPackage ./jsonschema.nix { };
+  glob2 = callPackage ./glob2.nix { };
 
 in buildPythonPackage rec {
   pname = "poetry";
@@ -45,6 +46,8 @@ in buildPythonPackage rec {
       "requests-toolbelt>=0.8.0,<0.10.0"
   '';
 
+  format = "pyproject";
+
   propagatedBuildInputs = [
     cleo6
     requests
@@ -58,7 +61,7 @@ in buildPythonPackage rec {
     html5lib
     shellingham
     tomlkit
-  ] ++ lib.optionals (isPy27 || isPy34) [ typing pathlib2 ]
+  ] ++ lib.optionals (isPy27 || isPy34) [ typing pathlib2 glob2 ]
     ++ lib.optionals isPy27 [ virtualenv functools32 ];
 
   postInstall = ''

pkgs/development/python-modules/poetry/glob2.nix

@@ -0,0 +1,11 @@
+{ buildPythonPackage, fetchPypi }:
+
+buildPythonPackage rec {
+  pname = "glob2";
+  version = "0.6";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "1miyz0pjyji4gqrzl04xsxcylk3h2v9fvi7hsg221y11zy3adc7m";
+  };
+}