filebrowser_safe: add expression

pkgs/top-level/python-packages.nix

@@ -4076,6 +4076,35 @@ let
     };
   };
 
+  filebrowser_safe = buildPythonPackage rec {
+    version = "0.3.6";
+    name = "filebrowser_safe-${version}";
+
+    src = pkgs.fetchurl {
+      url = "http://pypi.python.org/packages/source/f/filebrowser_safe/${name}.tar.gz";
+      md5 = "12a1ad3a1ed6a9377e758c4fa7fee570";
+    };
+
+    meta = with stdenv.lib; {
+      description = "A snapshot of django-filebrowser for the Mezzanine CMS";
+      longDescription = ''
+        filebrowser_safe was created to provide a snapshot of the FileBrowser
+        asset manager for Django, to be referenced as a dependency for the
+        Mezzanine CMS for Django.
+
+        At the time of filebrowser_safe's creation, FileBrowser was incorrectly
+        packaged on PyPI, and had also dropped compatibility with Django 1.1 -
+        filebrowser_safe was therefore created to address these specific
+        issues.
+      '';
+      homepage = https://github.com/stephenmcd/filebrowser-safe;
+      downloadPage = https://pypi.python.org/pypi/filebrowser_safe/;
+      license = licenses.free;
+      maintainers = with maintainers; [ prikhi ];
+      platforms = platforms.linux;
+    };
+  };
+
   flake8 = buildPythonPackage (rec {
     name = "flake8-2.1.0";