MacBook Air Catalina 在 conda 上的 pycafe 安装失败

Question

我使用 MacBook Air，catalina OS。我使用的conda 版本是4.9.2。

我正在尝试在我的自制程序窗口中使用以下语法安装 pycafe 和 conda：

conda install -c paulscherrerinstitute pycafe

我收到以下错误：

Collecting package metadata (current_repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
Collecting package metadata (repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.

PackagesNotFoundError: The following packages are not available from current channels:

  - pycafe

Current channels:

  - https://conda.anaconda.org/paulscherrerinstitute/osx-64
  - https://conda.anaconda.org/paulscherrerinstitute/noarch
  - https://repo.anaconda.com/pkgs/main/osx-64
  - https://repo.anaconda.com/pkgs/main/noarch
  - https://repo.anaconda.com/pkgs/r/osx-64
  - https://repo.anaconda.com/pkgs/r/noarch
  - https://conda.anaconda.org/conda-forge/osx-64
  - https://conda.anaconda.org/conda-forge/noarch

To search for alternate channels that may provide the conda package you're
looking for, navigate to

    https://anaconda.org

and use the search bar at the top of the page.

你能帮忙看看如何安装pycafe吗？

Answer 1

包不适用于 OS X

正如 cmets 中提到的，这个特定的包只能通过用户渠道获得，而且他们只为 linux-64 平台和 Python 3.5 构建了它。如果您热衷于避免自己编译（我应该注意版本构建仍然是最新的），那么我建议通过 Docker 来构建和托管环境。

替代方案：Docker 容器

我将一个基本的 Dockerfile 和 YAML 放在一起作为入门，但我预计可能需要一些额外的配置（例如，设置环境变量）。

pycafe.yaml

name: pycafe
channels:
  - paulscherrerinstitute
  - conda-forge
  - defaults
dependencies:
  - python=3.5
  - pycafe
  - cafe
  - numpy

Dockerfile

ROM continuumio/miniconda3

SHELL ["/bin/bash", "--login", "-c"]

# Install PyCafe
COPY pycafe.yaml .
RUN conda env create -f pycafe.yaml -n pycafe \
  && conda config --set auto_activate_base false \
  && sed -i "s/conda activate base/conda activate pycafe/" ~/.bashrc \
  && conda clean -a -y

将这两者放在一个目录中，可以构建 Docker 映像

docker build -t "pycafe:1.3.0" .

然后可以启动一个 Python 会话

docker run -it pycafe:1.3.0 bash
python