diff --git a/tests/test-recipes/metadata/entry_points/meta.yaml b/tests/test-recipes/metadata/entry_points/meta.yaml
index 217fcaa30e..ac07a8cb4b 100644
--- a/tests/test-recipes/metadata/entry_points/meta.yaml
+++ b/tests/test-recipes/metadata/entry_points/meta.yaml
@@ -20,3 +20,7 @@ requirements:
     - setuptools
   run:
     - python
+
+# Ensure we get different build strings for concurrently tested packages.
+extra:
+  dummy: '{{ pytest_name is defined }}'
diff --git a/tests/test_api_build.py b/tests/test_api_build.py
index 0a61a414c3..5e08ee5c4d 100644
--- a/tests/test_api_build.py
+++ b/tests/test_api_build.py
@@ -1655,14 +1655,15 @@ def test_provides_features_metadata(testing_config):
     assert index["provides_features"] == {"test2": "also_ok"}
 
 
-# using different MACOSX_DEPLOYMENT_TARGET in parallel causes some SDK race condition
-# https://github.com/conda/conda-build/issues/4708
-@pytest.mark.serial
-def test_overlinking_detection(testing_config, variants_conda_build_sysroot):
+def test_overlinking_detection(testing_config, testing_workdir, variants_conda_build_sysroot):
     testing_config.activate = True
     testing_config.error_overlinking = True
     testing_config.verify = False
-    recipe = os.path.join(metadata_dir, "_overlinking_detection")
+    recipe = os.path.join(testing_workdir, "recipe")
+    copy_into(
+        os.path.join(metadata_dir, "_overlinking_detection"),
+        recipe,
+    )
     dest_sh = os.path.join(recipe, "build.sh")
     dest_bat = os.path.join(recipe, "bld.bat")
     copy_into(
@@ -1684,17 +1685,17 @@ def test_overlinking_detection(testing_config, variants_conda_build_sysroot):
     rm_rf(dest_bat)
 
 
-# using different MACOSX_DEPLOYMENT_TARGET in parallel causes some SDK race condition
-# https://github.com/conda/conda-build/issues/4708
-@pytest.mark.serial
-@pytest.mark.flaky(reruns=5, reruns_delay=2)
 def test_overlinking_detection_ignore_patterns(
-    testing_config, variants_conda_build_sysroot
+    testing_config, testing_workdir, variants_conda_build_sysroot
 ):
     testing_config.activate = True
     testing_config.error_overlinking = True
     testing_config.verify = False
-    recipe = os.path.join(metadata_dir, "_overlinking_detection_ignore_patterns")
+    recipe = os.path.join(testing_workdir, "recipe")
+    copy_into(
+        os.path.join(metadata_dir, "_overlinking_detection_ignore_patterns"),
+        recipe,
+    )
     dest_sh = os.path.join(recipe, "build.sh")
     dest_bat = os.path.join(recipe, "bld.bat")
     copy_into(
diff --git a/tests/test_api_build_conda_v2.py b/tests/test_api_build_conda_v2.py
index 25e7915848..2d95b4652c 100644
--- a/tests/test_api_build_conda_v2.py
+++ b/tests/test_api_build_conda_v2.py
@@ -23,10 +23,11 @@ def test_conda_pkg_format(pkg_format, pkg_ext, testing_config, monkeypatch, capf
     monkeypatch.setenv("CONDA_TEST_VAR", "conda_test")
     monkeypatch.setenv("CONDA_TEST_VAR_2", "conda_test_2")
 
-    (output_file,) = api.get_output_file_paths(recipe, config=testing_config)
+    variants = {"pytest_name": [request.node.name]}
+    (output_file,) = api.get_output_file_paths(recipe, config=testing_config, variants=variants)
     assert output_file.endswith(pkg_ext)
 
-    api.build(recipe, config=testing_config)
+    api.build(recipe, config=testing_config, variants=variants)
     assert os.path.exists(output_file)
 
     out, err = capfd.readouterr()
diff --git a/tests/test_api_convert.py b/tests/test_api_convert.py
index 8eacad1475..60b4f61a55 100644
--- a/tests/test_api_convert.py
+++ b/tests/test_api_convert.py
@@ -194,9 +194,10 @@ def test_convert_platform_to_others(base_platform, package):
 @pytest.mark.skipif(
     on_win, reason="we create the pkg to be converted in *nix; don't run on win."
 )
-def test_convert_from_unix_to_win_creates_entry_points(testing_config):
+def test_convert_from_unix_to_win_creates_entry_points(testing_config, request):
     recipe_dir = os.path.join(metadata_dir, "entry_points")
-    fn = api.build(recipe_dir, config=testing_config)[0]
+    variants = {"pytest_name": [request.node.name]}
+    fn = api.build(recipe_dir, config=testing_config, variants=variants)[0]
     for platform in ["win-64", "win-32"]:
         api.convert(fn, platforms=[platform], force=True)
         converted_fn = os.path.join(platform, os.path.basename(fn))