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Pipfile.lock (bf56f7) out of date, updating to (0575f6)...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。