diff --git a/pkgs/development/python-modules/pecan/default.nix b/pkgs/development/python-modules/pecan/default.nix
new file mode 100644
index 000000000000..b6e022640cbd
--- /dev/null
+++ b/pkgs/development/python-modules/pecan/default.nix
@@ -0,0 +1,40 @@
+{ stdenv
+, fetchPypi
+, buildPythonPackage
+# Python deps
+, singledispatch
+, logutils
+, webtest
+, Mako
+, genshi
+, Kajiki
+, sqlalchemy
+, gunicorn
+, jinja2
+, virtualenv
+}:
+
+buildPythonPackage rec {
+  name = "${pname}-${version}";
+  pname = "pecan";
+  version = "1.2.1";
+
+  patches = [
+    ./python36_test_fix.patch
+  ];
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "0ikc32rd2hr8j2jxc0mllvdjvxydx3fwfp3z8sdxmkzdkixlb5cd";
+  };
+
+  propagatedBuildInputs = [ singledispatch logutils ];
+  buildInputs = [
+    webtest Mako genshi Kajiki sqlalchemy gunicorn jinja2 virtualenv
+  ];
+
+  meta = with stdenv.lib; {
+    description = "Pecan";
+    homepage = "http://github.com/pecan/pecan";
+  };
+}
diff --git a/pkgs/development/python-modules/pecan/python36_test_fix.patch b/pkgs/development/python-modules/pecan/python36_test_fix.patch
new file mode 100644
index 000000000000..65e0733ab06e
--- /dev/null
+++ b/pkgs/development/python-modules/pecan/python36_test_fix.patch
@@ -0,0 +1,13 @@
+diff --git a/pecan/tests/test_conf.py b/pecan/tests/test_conf.py
+index 0573d84..7c98e16 100644
+--- a/pecan/tests/test_conf.py
++++ b/pecan/tests/test_conf.py
+@@ -157,7 +157,7 @@ class TestConf(PecanTestCase):
+
+             try:
+                 configuration.conf_from_file(f.name)
+-            except (ValueError, SystemError) as e:
++            except (ValueError, SystemError, ImportError) as e:
+                 assert 'relative import' in str(e)
+             else:
+                 raise AssertionError(
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 05125aa778ae..4f933b4364d2 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -15332,27 +15332,7 @@ in {
     '';
   };
 
-  pecan = buildPythonPackage rec {
-    name = "pecan-${version}";
-    version = "1.0.3";
-
-    src = pkgs.fetchurl {
-      url = "mirror://pypi/p/pecan/${name}.tar.gz";
-      sha256 = "04abmybab8jzbwgmrr0fcpcfhcvvkdsv9q135dss02wyk9q9jv4d";
-    };
-
-    propagatedBuildInputs = with self; [
-      singledispatch logutils
-    ];
-    buildInputs = with self; [
-      webtest Mako genshi Kajiki sqlalchemy gunicorn jinja2 virtualenv
-    ];
-
-    meta = with stdenv.lib; {
-      description = "Pecan";
-      homepage = "http://github.com/pecan/pecan";
-    };
-  };
+  pecan = callPackage ../development/python-modules/pecan { };
 
   kaitaistruct = buildPythonPackage rec {
     name = "kaitaistruct-${version}";