可以从 pipenv 安装特定版本的 Tensorflow，但不能从 Pipfile 安装

如何解决可以从 pipenv 安装特定版本的 Tensorflow，但不能从 Pipfile 安装

非常奇怪的错误，我可以使用命令从 pipenv 安装 tensorflow==2.4.1

pipenv install tensorflow==2.4.1

但是当我把它放在一个 pipfile 的格式中时：

[[source]]
url = "https://pypi.org/simple"
verify_ssl = true
name = "pypi"

[packages]
tensorflow = "==2.4.1"

[requires]
python_version = "3.8"

然后我运行命令：

pipenv lock --clear
pipenv --rm 
pipenv install

我明白了：

Pipfile.lock (bf56f7) out of date,updating to (0575f6)...
Locking [dev-packages] dependencies...
Locking [packages] dependencies...
Building requirements...
Resolving dependencies...
✘ Locking Failed!
CRITICAL:pipenv.patched.notpip._internal.index.package_finder:Could not find a version that satisfies the requirement tensorflow==2.4.1 (from -r /var/folders/m6/kqrmfdj12x79gmbbq6f2m1ph0000gn/T/pipenvxgupglu4requirements/pipenv-puyj_a_j-constraints.txt (line 2)) (from versions: none)
[ResolutionFailure]:   File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/resolver.py",line 741,in _main
[ResolutionFailure]:       resolve_packages(pre,clear,verbose,system,write,requirements_dir,packages,dev)
[ResolutionFailure]:   File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/resolver.py",line 702,in resolve_packages
[ResolutionFailure]:       results,resolver = resolve(
[ResolutionFailure]:   File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/resolver.py",line 684,in resolve
[ResolutionFailure]:       return resolve_deps(
[ResolutionFailure]:   File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/utils.py",line 1395,in resolve_deps
[ResolutionFailure]:       results,hashes,markers_lookup,resolver,skipped = actually_resolve_deps(
[ResolutionFailure]:   File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/utils.py",line 1108,in actually_resolve_deps
[ResolutionFailure]:       resolver.resolve()
[ResolutionFailure]:   File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/utils.py",line 833,in resolve
[ResolutionFailure]:       raise ResolutionFailure(message=str(e))
[pipenv.exceptions.ResolutionFailure]: Warning: Your dependencies could not be resolved. You likely have a mismatch in your sub-dependencies.
  First try clearing your dependency cache with $ pipenv lock --clear,then try the original command again.
 Alternatively,you can use $ pipenv install --skip-lock to bypass this mechanism,then run $ pipenv graph to inspect the situation.
  Hint: try $ pipenv lock --pre if it is a pre-release dependency.
ERROR: No matching distribution found for tensorflow==2.4.1 (from -r /var/folders/m6/kqrmfdj12x79gmbbq6f2m1ph0000gn/T/pipenvxgupglu4requirements/pipenv-puyj_a_j-constraints.txt (line 2))

我已承诺让 pipenv 工作，并且不适合其他包管理解决方案。