diff --git a/_multibuild b/_multibuild
deleted file mode 100644
index 55ed970..0000000
--- a/_multibuild
+++ /dev/null
@@ -1,6 +0,0 @@
-<multibuild>
-  <package>test-py311</package>
-  <package>test-py312</package>
-  <package>test-py313</package>
-  <package>test-py314</package>
-</multibuild>
diff --git a/python-ipykernel.changes b/python-ipykernel.changes
index a24c99f..ac5f2a5 100644
--- a/python-ipykernel.changes
+++ b/python-ipykernel.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Wed Feb  4 13:57:06 UTC 2026 - Ben Greiner <code@bnavigator.de>
+
+- Revert multibuild and fix kernel selection in tests 
+
 -------------------------------------------------------------------
 Mon Feb  2 13:38:42 UTC 2026 - Markéta Machová <mmachova@suse.com>
 
diff --git a/python-ipykernel.spec b/python-ipykernel.spec
index 13acca9..0bf3b50 100644
--- a/python-ipykernel.spec
+++ b/python-ipykernel.spec
@@ -16,32 +16,6 @@
 #
 
 
-%global flavor @BUILD_FLAVOR@%{nil}
-%if "%{flavor}" == ""
-%define psuffix %{nil}
-%bcond_with test
-%else
-# we are unable to set the correct jupyter kernel file, hence the flavored tests need to be run in separate environments
-%bcond_without test
-%define psuffix -%{flavor}
-%if "%{flavor}" != "test-py311"
-%define skip_python311 1
-%endif
-%if "%{flavor}" != "test-py312"
-%define skip_python312 1
-%endif
-%if "%{flavor}" != "test-py313"
-%define skip_python313 1
-%endif
-%if "%{flavor}" != "test-py314"
-%define skip_python314 1
-%endif
-%endif
-# The obs server-side interpreter cannot use lua or rpm shrink
-%if "%pythons" == "" || "%pythons" == " " || "%pythons" == "  " || "%pythons" == "   " || "%pythons" == "    " || ( "%pythons" == "python311" && 0%{?skip_python311} )
-ExclusiveArch:  donotbuild
-%define python_module() %flavor-not-enabled-in-buildset-for-suse-%{?suse_version}
-%endif
 %{?sle15_python_module_pythons}
 Name:           python-ipykernel
 Version:        6.31.0
@@ -98,10 +72,8 @@ Requires:       python-tornado >= 6.2
 Requires:       python-traitlets >= 5.4.0
 Requires:       (python-jupyter-core >= 5.1 or (python-jupyter-core >= 4.12 with python-jupyter-core < 5.0))
 # /SECTION
-%if %{with test}
 # SECTION test requirements
 BuildRequires:  %{python_module flaky}
-BuildRequires:  %{python_module ipykernel = %{version}}
 BuildRequires:  %{python_module matplotlib}
 BuildRequires:  %{python_module pytest >= 7.0}
 BuildRequires:  %{python_module pytest-asyncio >= 0.23.5}
@@ -109,7 +81,6 @@ BuildRequires:  %{python_module pytest-timeout}
 # we don't want ipyparallel and its dependencies in Ring1, see below
 #BuildRequires:  #{python_module ipyparallel}
 # /SECTION
-%endif
 %if "%{python_flavor}" == "python3" || "%{python_provides}" == "python3"
 Provides:       jupyter-ipykernel = %{version}-%{release}
 Obsoletes:      jupyter-ipykernel < %{version}-%{release}
@@ -142,7 +113,6 @@ $python -m ipykernel install \
 %endif
 
 %check
-%if %{with test}
 # fails in obs setups
 ignoretests="--ignore tests/test_debugger.py"
 # flaky obs timeouts
@@ -150,10 +120,18 @@ donttest="test_init_ipc_socket"
 # we don't want ipyparallel and its dependencies in Ring1
 ignoretests="$ignoretests --ignore tests/test_pickleutil.py"
 donttest="$donttest or test_do_apply"
-%pytest -k "not ($donttest)" $ignoretests
-%endif
+%{python_expand #
+export PYTHONPATH=%{buildroot}%{$python_sitelib}
+# install single kernelspecs for each flavor, so that it is taken by default
+mkdir testjupyter-{$python_bin_suffix}
+export JUPYTER_DATA_DIR=$PWD/testjupyter-%{$python_bin_suffix}
+$python -m ipykernel install \
+    --prefix=$JUPYTER_DATA_DIR \
+    --name python%{$python_bin_suffix} \
+    --display-name 'Python %{$python_bin_suffix} (ipykernel)'
+$python -m pytest -v -k "not ($donttest)" $ignoretests
+}
 
-%if !%{with test}
 %files %{python_files}
 %doc README.md
 %license LICENSE
@@ -165,6 +143,5 @@ donttest="$donttest or test_do_apply"
 %if "%{python_flavor}" == "python3" || "%{python_provides}" == "python3" || 0%{?suse_version} < 1600
 %{_jupyter_kernel_dir}/python3
 %endif
-%endif
 
 %changelog