conda 4.7.7 ->4.6 - 收集包元数据 (current_repodata.json) - (channel conda-forge) ipywidgets-5.2.3-py36_0 由于 InvalidSpec: ==1.\*

Question

畅达更新刹车一切。

conda env-solving 花了几个小时而且永远

可能是由于 conda 优化： https ://www.anaconda.com/why-we-removed-the-free-channel-in-conda-4-7/

但这破坏了许多系统（比如我的系统）： https ://github.com/conda/conda/issues/8844

得到像这样的错误

Collecting package metadata (current_repodata.json): - WARNING conda.models.version:get_matcher(531): Using .* with relational operator is superfluous and deprecated and will be removed in a future version of conda. Your spec was 1.*, but conda is ignoring the .* and treating it as 1
done
Solving environment: failed with current_repodata.json, will retry with next repodata source.
Initial quick solve with frozen env failed.  Unfreezing env and trying again.
Solving environment: failed with current_repodata.json, will retry with next repodata source.
Collecting package metadata (repodata.json): done

所以我降级到 conda=4.6

但得到了

Collecting package metadata: / WARNING conda.core.index:push_record(193): Skipping conda-forge/label/broken/linux-64::ipywidgets-5.2.3-py36_0 due to InvalidSpec: ==1.*
WARNING conda.core.index:push_record(193): Skipping conda-forge/label/broken/linux-64::ipywidgets-5.2.3-py27_0 due to InvalidSpec: ==1.*
WARNING conda.core.index:push_record(193): Skipping conda-forge/label/broken/linux-64::ipywidgets-5.2.3-py35_0 due to InvalidSpec: ==1.*
done
Solving environment: failed

InvalidVersionSpec: Invalid version '==1.*': invalid operator with '.*'

和

conda install conda=4.7
Collecting package metadata: failed

CondaUpgradeError: This environment has previously been operated on by a conda version that's newer
than the conda currently being used. A newer version of conda is required.
  target environment location: /home/aeug/conda
  current conda version: 4.6.0
  minimum conda version: 4.7

有什么可以再次修复系统/环境的吗？

我所能看到的是重新安装一个好的旧 conda 4.6.11 https://repo.anaconda.com/miniconda/

---

 conda install conda=4.6
conda config --set pip_interop_enabled True

我可以用一些错误重建环境，但花了大约 6 个小时。

原文由 InLaw 发布，翻译遵循 CC BY-SA 4.0 许可协议

Answer 1

这个解决方案帮助了我的系统，设置了一个 conda 配置参数 conda docs

 conda config --set allow_conda_downgrades true
conda install conda=4.6.11

它又可以正常工作了。

原文由 InLaw 发布，翻译遵循 CC BY-SA 4.0 许可协议

Answer 2

我使用 win10 1903、python 3.7 和 conda 4.7。

我将 conda 降级到 4.6.14 并重新启动。然后一切正常。

原文由 James Jing 发布，翻译遵循 CC BY-SA 4.0 许可协议