diff --git a/_multibuild b/_multibuild
new file mode 100644
index 0000000..ec2fdbb
--- /dev/null
+++ b/_multibuild
@@ -0,0 +1,3 @@
+<multibuild>
+  <package>test</package>
+</multibuild>
\ No newline at end of file
diff --git a/python-nbclient.changes b/python-nbclient.changes
index 7385b91..b7ff208 100644
--- a/python-nbclient.changes
+++ b/python-nbclient.changes
@@ -1,3 +1,14 @@
+-------------------------------------------------------------------
+Thu Apr  8 22:30:04 UTC 2021 - Ben Greiner <code@bnavigator.de>
+
+- Actually break the cycle: test flavor needs a psuffix
+
+-------------------------------------------------------------------
+Wed Mar 31 16:03:17 UTC 2021 - Ben Greiner <code@bnavigator.de>
+
+- test in multibuild flavor in order to break runtime and build
+  dependency cycle with nbconvert.
+
 -------------------------------------------------------------------
 Wed Mar  3 19:24:34 UTC 2021 - Arun Persaud <arun@gmx.de>
 
diff --git a/python-nbclient.spec b/python-nbclient.spec
index aa8f41d..6de8dbe 100644
--- a/python-nbclient.spec
+++ b/python-nbclient.spec
@@ -16,9 +16,18 @@
 #
 
 
+%global flavor @BUILD_FLAVOR@%{nil}
+%if "%{flavor}" == "test"
+%define psuffix -test
+%bcond_without test
+%else
+%define psuffix %{nil}
+%bcond_with test
+%endif
+
 %{?!python_module:%define python_module() python-%{**} python3-%{**}}
 %define         skip_python2 1
-Name:           python-nbclient
+Name:           python-nbclient%{psuffix}
 Version:        0.5.3
 Release:        0
 Summary:        A client library for executing notebooks
@@ -34,7 +43,7 @@ Requires:       python-nbformat >= 5.0
 Requires:       python-nest-asyncio
 Requires:       python-traitlets >= 4.2
 BuildArch:      noarch
-# SECTION test requirements
+%if %{with test}
 BuildRequires:  %{python_module async_generator}
 BuildRequires:  %{python_module ipython}
 BuildRequires:  %{python_module ipywidgets}
@@ -46,7 +55,7 @@ BuildRequires:  %{python_module pytest >= 4.1}
 BuildRequires:  %{python_module testpath}
 BuildRequires:  %{python_module traitlets >= 4.2}
 BuildRequires:  %{python_module xmltodict}
-# /SECTION
+%endif
 %python_subpackages
 
 %description
@@ -57,22 +66,29 @@ NBClient is a tool for parameterizing andexecuting Jupyter Notebooks.
 
 %prep
 %setup -q -n nbclient-%{version}
+rm -r nbclient/tests/files/.ipynb_checkpoints
 
 %build
 %python_build
 
+%if ! %{with test}
 %install
 %python_install
 %python_expand %fdupes %{buildroot}%{$python_sitelib}
+%endif
 
+%if %{with test}
 %check
 # test_many_parallel_notebooks randomly fails - https://github.com/jupyter/nbclient/pull/74#issuecomment-635929953
 %pytest -k 'not test_many_parallel_notebooks'
+%endif
 
+%if ! %{with test}
 %files %{python_files}
 %doc CHANGELOG.md README.md
 %license LICENSE
 %{python_sitelib}/nbclient
 %{python_sitelib}/nbclient-%{version}-py*.egg-info/
+%endif
 
 %changelog