Failed to activate conda environment

问题描述

Pycharm Terminal显示以下错误，导致无法自动激活当前项目的conda环境

Failed : 无法将“Failed”项识别为 cmdlet、函数、脚本文件或可运行程序的名称。请检查名称的拼写，如果包括路径，请确保路径正确，然后再试一次。
所在位置 行:1 字符: 1
+ Failed to activate conda environment.
+ ~~~~~~+ CategoryInfo          : ObjectNotFound: (Failed:String) [], CommandNotFoundException+ FullyQualifiedErrorId : CommandNotFoundExceptionPlease : 无法将“Please”项识别为 cmdlet、函数、脚本文件或可运行程序的名称。请检查名称的拼写，如果包括路径，请确保路径正确，然后再试一次。
所在位置 行:2 字符: 2
+  Please open Anaconda prompt, and run `conda init powershell` there.
+  ~~~~~~+ CategoryInfo          : ObjectNotFound: (Please:String) [], CommandNotFoundException+ FullyQualifiedErrorId : CommandNotFoundException

原因分析

查看log文件，发现真实的错误是找不到conda的路径

2024-07-25 10:35:24,316 [1553431]   INFO - #c.j.p.packaging - System conda executable is not found
2024-07-25 10:35:24,316 [1553431]   WARN - #c.i.p.t.PyVirtualEnvTerminalCustomizer - Can't find null, will not activate conda

查看github上文件对应的源代码：python/python-sdk/src/com/jetbrains/python/packaging/CondaExecutablesLocator.kt
可以发现它默认是从sdk path去找conda的可执行文件，但是由于我这里环境修改了env_dirs的存储目录，使其跟conda的安装路径不一致了，所以它找不到conda的可执行文件。
之后则去环境变量、用户的home目录找conda的可执行文件，windows是conda.bat，但是window是装在用户home目录下的AppData\Local文件夹的，所以这里找不到。

@JvmStatic
fun getCondaExecutable(sdkPath: String?): @SystemDependent String? {if (sdkPath != null) {val condaPath = findCondaExecutableRelativeToEnv(Path.of(sdkPath))if (condaPath != null) {LOG.info("Using $condaPath as a conda executable for $sdkPath (found as a relative to the env)")return condaPath.toString()}}val preferredCondaPath = getInstance().preferredCondaPathif (!preferredCondaPath.isNullOrEmpty()) {val forSdkPath = if (sdkPath == null) "" else " for $sdkPath"LOG.info("Using $preferredCondaPath as a conda executable$forSdkPath (specified as a preferred conda path)")return preferredCondaPath}return getSystemCondaExecutable()?.toString()
}private const val CONDA_BAT_NAME = "conda.bat"
fun getSystemCondaExecutable(): Path? {val condaName = if (SystemInfo.isWindows) CONDA_BAT_NAME else CONDA_BINARY_NAME// TODO we need another findInPath() that works with Path-sval condaInPath = PathEnvironmentVariableUtil.findInPath(condaName)if (condaInPath != null) {LOG.info("Using $condaInPath as a conda executable (found in PATH)")return condaInPath.toPath()}val condaInRoots = getCondaExecutableByName(condaName)if (condaInRoots != null) {LOG.info("Using $condaInRoots as a conda executable (found by visiting possible conda roots)")return condaInRoots}LOG.info("System conda executable is not found")return null
}