conda 4.7.7 ->4.6 - 收集包元数据 (current_repodata.json) - (channel conda-forge) ipywidgets-5.2.3-py36_

Question

conda 更新会阻止一切。

Conda ENV 解决需要数小时且永远

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(就像我的一样(：https://github.com/conda/conda/issues/8844

有错误，如

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/环境吗？

我所能看到的只是用一个好的旧 conda 4.6.11 重新安装https://repo.anaconda.com/miniconda/

---

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

我可以重建环境，但有一些错误，但花了~6个小时。

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文档

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

它再次正常工作。

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。

Answer 3

新版本的 conda 已经出来了！ 版本 4.7.10它在金丝雀频道上。运行以下命令并检查它是否修复了问题：

conda update conda -c conda-canary

或：

conda update -n base -c defaults cond

如 https://github.com/conda/conda/issues/8954 所述，与conda相关的一些问题已修复。