diff --git a/pkgs/development/python-modules/ruamel_base/default.nix b/pkgs/development/python-modules/ruamel_base/default.nix
new file mode 100644
index 000000000000..ba6a79fdd634
--- /dev/null
+++ b/pkgs/development/python-modules/ruamel_base/default.nix
@@ -0,0 +1,21 @@
+{ stdenv
+, buildPythonPackage
+, fetchPypi
+}:
+
+buildPythonPackage rec {
+  pname = "ruamel.base";
+  version = "1.0.0";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "1wswxrn4givsm917mfl39rafgadimf1sldpbjdjws00g1wx36hf0";
+  };
+
+  meta = with stdenv.lib; {
+    description = "Common routines for ruamel packages";
+    homepage = https://bitbucket.org/ruamel/base;
+    license = licenses.mit;
+  };
+
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 6e4f400bcf96..7533bac85199 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -3654,21 +3654,7 @@ in {
 
   squaremap = callPackage ../development/python-modules/squaremap { };
 
-  ruamel_base = buildPythonPackage rec {
-    name = "ruamel.base-${version}";
-    version = "1.0.0";
-
-    src = pkgs.fetchurl {
-      url = "mirror://pypi/r/ruamel.base/${name}.tar.gz";
-      sha256 = "1wswxrn4givsm917mfl39rafgadimf1sldpbjdjws00g1wx36hf0";
-    };
-
-    meta = {
-      description = "Common routines for ruamel packages";
-      homepage = https://bitbucket.org/ruamel/base;
-      license = licenses.mit;
-    };
-  };
+  ruamel_base = callPackage ../development/python-modules/ruamel_base { };
 
   ruamel_ordereddict = buildPythonPackage rec {
     name = "ruamel.ordereddict-${version}";