diff --git a/dev-python/setuptools/setuptools-68.0.0-r1.ebuild b/dev-python/setuptools/setuptools-68.0.0-r1.ebuild
index 6490d47fbaddf..3f796e7f5584a 100644
--- a/dev-python/setuptools/setuptools-68.0.0-r1.ebuild
+++ b/dev-python/setuptools/setuptools-68.0.0-r1.ebuild
@@ -56,6 +56,8 @@ BDEPEND="
 		' "${PYTHON_TESTED[@]}")
 	)
 "
+# setuptools-scm is here because installing plugins apparently breaks stuff at
+# runtime, so let's pull it early. See bug #663324.
 PDEPEND="
 	>=dev-python/certifi-2016.9.26[${PYTHON_USEDEP}]
 	dev-python/setuptools-scm[${PYTHON_USEDEP}]
diff --git a/dev-python/setuptools/setuptools-68.1.2.ebuild b/dev-python/setuptools/setuptools-68.1.2.ebuild
index 472b35c2a51b1..dff9ddb41cae8 100644
--- a/dev-python/setuptools/setuptools-68.1.2.ebuild
+++ b/dev-python/setuptools/setuptools-68.1.2.ebuild
@@ -56,6 +56,8 @@ BDEPEND="
 		' "${PYTHON_TESTED[@]}")
 	)
 "
+# setuptools-scm is here because installing plugins apparently breaks stuff at
+# runtime, so let's pull it early. See bug #663324.
 PDEPEND="
 	>=dev-python/certifi-2016.9.26[${PYTHON_USEDEP}]
 	dev-python/setuptools-scm[${PYTHON_USEDEP}]