Could not find a version that satisfies the requirement django-haystack

django 3.2.4
安装django-haystack 3.0出现报错：

ERROR: Could not find a version that satisfies the requirement django-haystack==3.0 (from versions: 1.0.0-final, 1.0.1-final, 1.0.2-final, 1.0.0rc1, 1.1.0, 1.2.0, 1.2.1, 1.2.2, 1.2.3, 1.2.4, 1.2.5, 1.2.6, 1.2.7, 2.0.0, 2.1.0, 2.2.0, 2.2.1, 2.3.0, 2.3.1, 2.3.2, 2.4.0rc1, 2.4.0rc2, 2.4.0, 2.4.1, 2.5.dev0, 2.5.dev1, 2.5.dev2, 2.5.0, 2.5.1, 2.6.0, 2.6.1, 2.7.dev0, 2.7.dev1, 2.7.0, 2.8.0, 2.8.1, 3.0b1, 3.0b2, 3.0)
ERROR: No matching distribution found for django-haystack==3.0

解决办法：

pip3 install setuptools-scm
pip3 install django-haystack==3.0