pythonPackages.s3fs: Move to own file

pkgs/development/python-modules/s3fs/default.nix

@@ -0,0 +1,26 @@
+{ stdenv, buildPythonPackage, fetchPypi, docutils, boto3 }:
+
+buildPythonPackage rec {
+  pname = "s3fs";
+  version = "0.0.8";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "0zbdzqrim0zig94fk1hswg4vfdjplw6jpx3pdi42qc830h0nscn8";
+  };
+
+  buildInputs = [ docutils ];
+  propagatedBuildInputs = [ boto3 ];
+
+  # Depends on `moto` which has a long dependency chain with exact
+  # version requirements that can't be made to work with current
+  # pythonPackages.
+  doCheck = false;
+
+  meta = with stdenv.lib; {
+    description = "S3FS builds on boto3 to provide a convenient Python filesystem interface for S3.";
+    homepage = http://github.com/dask/s3fs/;
+    license = licenses.bsd3;
+    maintainers = with maintainers; [ teh ];
+  };
+}