Drop a build dependency on tox

See https://github.com/fedora-eln/eln/issues/126

This is intentionally not conditionalized on %rhel,
as it is simpler this way.

python-iniconfig.spec

@@ -8,11 +8,16 @@ BuildArch:          noarch
 BuildRequires:      python3-devel
 BuildRequires:      pyproject-rpm-macros
 
-Source0:            %{pypi_source iniconfig}
-
 # pytest 6+ needs this and this uses pytest for tests
 %bcond_without tests
 
+%if %{with tests}
+# We BR pytest manually to avoid a dependency on tox in ELN/RHEL
+BuildRequires:      python3-pytest
+%endif
+
+Source0:            %{pypi_source iniconfig}
+
 %global _description %{expand:
 iniconfig is a small and simple INI-file parser module
 having a unique set of features:
@@ -40,7 +45,7 @@ sed -i "s/py\.test/pytest/" testing/test_iniconfig.py
 
 
 %generate_buildrequires
-%pyproject_buildrequires %{?with_tests:-t}
+%pyproject_buildrequires
 
 
 %build
@@ -54,7 +59,7 @@ sed -i "s/py\.test/pytest/" testing/test_iniconfig.py
 
 %if %{with tests}
 %check
-%tox
+%pytest -v
 %endif