未找到scs==2.1.4的匹配分布

Question

我正在Windows 10 64位上使用conda 4.10.3

我试图用这两个文件创建一个conda环境：ml4t.yml和ml4t-base.yml

首先，我试过：

mamba env create -f installation/windows/ml4t.yml

我遇到一个错误，因此我尝试了：

mamba env create -f installation/ml4t-base.yml

第一个文件是ml4t.yml，用于创建具有笔记本电脑中使用的库的最新版本的环境（截至2021年4月）

第二个文件是ml4t-base.yml，用于创建具有最新库版本的环境

您可以找到有关安装here的详细信息

在这两种情况下pip和scs包都有一个错误

对于第一个文件ml4t.yml，我收到以下错误消息：

ERROR: No matching distribution found for scs==2.1.4

第二个错误消息是：

ERROR: Failed building wheel for scs
    ERROR: Command errored out with exit status 1:
     command: 'D:\Programs\anaconda3\envs\ml4t\python.exe' -u -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\liber\\AppData\\Local\\Temp\\pip-install-j5wtb8f1\\scs_401115d47d5d45089d65831a3a0a65f4\\setup.py'"'"'; __file__='"'"'C:\\Users\\liber\\AppData\\Local\\Temp\\pip-install-j5wtb8f1\\scs_401115d47d5d45089d65831a3a0a65f4\\setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\MyUser\AppData\Local\Temp\pip-record-5xnj3hxm\install-record.txt' --single-version-externally-managed --compile --install-headers 'D:\Programs\anaconda3\envs\ml4t\Include\scs'
         cwd: C:\Users\MyUser\AppData\Local\Temp\pip-install-j5wtb8f1\scs_401115d47d5d45089d65831a3a0a65f4\
    Complete output (27 lines):
    Namespace(blas64=False, extraverbose=False, float32=False, gpu=False, int32=False, openmp=False, root_dir='./', scs=False)
    using blas_opt / lapack_opt
    blas_opt / lapack_opt install failed, trying blas / lapack
    running install
    running build
    running build_py
    creating build
    creating build\lib.win-amd64-3.8
    copying scs.py -> build\lib.win-amd64-3.8
    running build_ext
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    building '_scs_direct' extension
    creating build\temp.win-amd64-3.8
    creating build\temp.win-amd64-3.8\Release
    creating build\temp.win-amd64-3.8\Release\src
    creating build\temp.win-amd64-3.8\Release\linsys
    creating build\temp.win-amd64-3.8\Release\linsys\direct
    creating build\temp.win-amd64-3.8\Release\linsys\direct\external
    cl.exe /c /nologo /Ox /W3 /GL /DNDEBUG /MD -DPYTHON -DCTRLC=1 -DCOPYAMATRIX -DDLONG=1 -I./ -I./include -ID:\Programs\anaconda3\envs\ml4t\lib\site-packages\numpy\core\include -I./linsys -I./linsys/direct/ -I./linsys/direct/external/ -ID:\Programs\anaconda3\envs\ml4t\include -ID:\Programs\anaconda3\envs\ml4t\include /Tcscsmodule.c /Fobuild\temp.win-amd64-3.8\Release\scsmodule.obj -O3
    running install
    running build
    running build_py
    running build_ext
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    building '_scs_direct' extension
    cl.exe /c /nologo /Ox /W3 /GL /DNDEBUG /MD -DPYTHON -DCTRLC=1 -DCOPYAMATRIX -DDLONG=1 -I./ -I./include -ID:\Programs\anaconda3\envs\ml4t\lib\site-packages\numpy\core\include -I./linsys -I./linsys/direct/ -I./linsys/direct/external/ -ID:\Programs\anaconda3\envs\ml4t\include -ID:\Programs\anaconda3\envs\ml4t\include /Tcscsmodule.c /Fobuild\temp.win-amd64-3.8\Release\scsmodule.obj -O3
    error: Command "cl.exe /c /nologo /Ox /W3 /GL /DNDEBUG /MD -DPYTHON -DCTRLC=1 -DCOPYAMATRIX -DDLONG=1 -I./ -I./include -ID:\Programs\anaconda3\envs\ml4t\lib\site-packages\numpy\core\include -I./linsys -I./linsys/direct/ -I./linsys/direct/external/ -ID:\Programs\anaconda3\envs\ml4t\include -ID:\Programs\anaconda3\envs\ml4t\include /Tcscsmodule.c /Fobuild\temp.win-amd64-3.8\Release\scsmodule.obj -O3" failed with exit status 127
    ----------------------------------------
ERROR: Command errored out with exit status 1: 'D:\Programs\anaconda3\envs\ml4t\python.exe' -u -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\liber\\AppData\\Local\\Temp\\pip-install-j5wtb8f1\\scs_401115d47d5d45089d65831a3a0a65f4\\setup.py'"'"'; __file__='"'"'C:\\Users\\liber\\AppData\\Local\\Temp\\pip-install-j5wtb8f1\\scs_401115d47d5d45089d65831a3a0a65f4\\setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\MyUser\AppData\Local\Temp\pip-record-5xnj3hxm\install-record.txt' --single-version-externally-managed --compile --install-headers 'D:\Programs\anaconda3\envs\ml4t\Include\scs' Check the logs for full command output.

failed

CondaEnvException: Pip failed

您可以在pastebin中找到完整的输出

看起来numpy版本和scs之间存在兼容性错误，您可以看到here：

Currently, installing SCS requires numpy<1.20 to be installed.

我已尝试将第一个文件中的numpy版本ml4t.yml更改为- numpy=1.19.5，但仍然出现相同的错误

我如何解决这个问题

Answer 1

我已经解决了将大部分pip包迁移到mamba安装的问题

我已将原始文件ml4t.yml更改为pip部分，如下所示：

  - pip:
    - backtrader==1.9.76.123
    - livelossplot==0.5.4
    - pyportfolioopt==1.4.1
    - qdldl==0.1.5.post0
    - osqp==0.6.2.post0
    - pymdptoolbox==4.0b3

换句话说，我已经将conda中可用的所有包从pip部分移动到了dependencies部分