virtualenv 不会在 PyCharm 内的 Cygwin 中激活并在失败后中断所有类 Unix 命令

Question

尝试在嵌入在 PyCharm 中的终端中激活 venv 时，我收到以下错误：

$ . venv/Scripts/activate
bash: cygpath: command not found
bash: basename: command not found

此外，在此命令失败后，不再识别所有类 Unix 命令：

$ ls
bash: ls: command not found
()

我曾尝试在 PyCharm 中使用 Cygwin 和 Git-Bash 作为类 Unix 终端。 我还将C:\\cygwin64\\bin到我的PATH变量中。 Virtualenv 在 Cygwin 和 Git-Bash 的独立窗口中都可以正常激活。

---

以下是我在 PyCharm 中针对 Cygwin 和 Git-Bash 的设置：

"C:\\Program Files\\Git\\bin\\sh" -lic "cd ${OLDPWD-.}; bash"
"C:\\cygwin64\\bin\\sh" -lic "cd ${OLDPWD-.}; bash"

---

不确定这是否相关，但我注意到嵌入式终端的 cwd 是一条奇怪的路径：

$ pwd
/cygdrive/c/Users/account_name/Documents/python-projects/project

我试过cd进入“正常”路径，但结果相同。

我对 shell 脚本了解不够，无法查看激活文件并真正知道发生了什么。 但我 99% 确定问题来自这些行（主要是因为cypath和basename仅在这些行中找到）

VIRTUAL_ENV="$(if [ "$OSTYPE" "==" "cygwin" ]; then cygpath -u 'C:\Users\account_name\Documents\python-projects\project\venv'; else echo '/C/Users/account_name/Documents/python-projects/project/venv'; fi;)"
export VIRTUAL_ENV

和

if [ -z "${VIRTUAL_ENV_DISABLE_PROMPT-}" ] ; then
    _OLD_VIRTUAL_PS1="$PS1"
    if [ "x" != x ] ; then
        PS1="$PS1"
    else
        PS1="(`basename \"$VIRTUAL_ENV\"`) $PS1"
    fi
    export PS1
fi

再说一次，这些是 cygwin 附带的命令（我认为），因此类 Unix 的命令可能会在此行之前崩溃。

---

所有其他命令似乎都按预期工作，但是一旦激活失败，一切都会停止工作。 当我使用cmd切换回 Windows 命令提示符时，我的venv会像往常一样立即被 PyCharm 激活。

任何输入都会非常有帮助，因为我不知所措！

---

更新：

能够得到. venv/Scripts/activate . venv/Scripts/activate命令才能工作。 我决定尝试通过将其粘贴到终端中来逐个运行activate脚本。 奇怪的是，这里什么都没发生……

事实证明，如果我在脚本中交换执行顺序，由于某种原因，一切正常。

如果有人能告诉我如何避免这种情况，那将是非常有益的——目前我将不得不手动调整我所有虚拟环境中的每个activate脚本。

工作activate脚本：

VIRTUAL_ENV="$(if [ "$OSTYPE" "==" "cygwin" ]; then cygpath -u 'C:\Users\account_name\Documents\python-projects\project\venv'; else echo '/C/Users/account_name/Documents/python-projects/project/venv'; fi;)"
export VIRTUAL_ENV

_OLD_VIRTUAL_PATH="$PATH"
PATH="$VIRTUAL_ENV/Scripts:$PATH"
export PATH

# unset PYTHONHOME if set
if ! [ -z "${PYTHONHOME+_}" ] ; then
    _OLD_VIRTUAL_PYTHONHOME="$PYTHONHOME"
    unset PYTHONHOME
fi

if [ -z "${VIRTUAL_ENV_DISABLE_PROMPT-}" ] ; then
    _OLD_VIRTUAL_PS1="$PS1"
    if [ "x" != x ] ; then
        PS1="$PS1"
    else
        PS1="(`basename \"$VIRTUAL_ENV\"`) $PS1"
    fi
    export PS1
fi

# Make sure to unalias pydoc if it's already there
alias pydoc 2>/dev/null >/dev/null && unalias pydoc

pydoc () {
    python -m pydoc "$@"
}

# This should detect bash and zsh, which have a hash command that must
# be called to get it to forget past commands.  Without forgetting
# past commands the $PATH changes we made may not be respected
if [ -n "${BASH-}" ] || [ -n "${ZSH_VERSION-}" ] ; then
    hash -r 2>/dev/null
fi

# This file must be used with "source bin/activate" *from bash*
# you cannot run it directly

deactivate () {
    unset -f pydoc >/dev/null 2>&1

    # reset old environment variables
    # ! [ -z ${VAR+_} ] returns true if VAR is declared at all
    if ! [ -z "${_OLD_VIRTUAL_PATH+_}" ] ; then
        PATH="$_OLD_VIRTUAL_PATH"
        export PATH
        unset _OLD_VIRTUAL_PATH
    fi
    if ! [ -z "${_OLD_VIRTUAL_PYTHONHOME+_}" ] ; then
        PYTHONHOME="$_OLD_VIRTUAL_PYTHONHOME"
        export PYTHONHOME
        unset _OLD_VIRTUAL_PYTHONHOME
    fi

    # This should detect bash and zsh, which have a hash command that must
    # be called to get it to forget past commands.  Without forgetting
    # past commands the $PATH changes we made may not be respected
    if [ -n "${BASH-}" ] || [ -n "${ZSH_VERSION-}" ] ; then
        hash -r 2>/dev/null
    fi

    if ! [ -z "${_OLD_VIRTUAL_PS1+_}" ] ; then
        PS1="$_OLD_VIRTUAL_PS1"
        export PS1
        unset _OLD_VIRTUAL_PS1
    fi

    unset VIRTUAL_ENV
    if [ ! "${1-}" = "nondestructive" ] ; then
    # Self destruct!
        unset -f deactivate
    fi
}

# unset irrelevant variables
# deactivate nondestructive

旧的activate脚本：

# This file must be used with "source bin/activate" *from bash*
# you cannot run it directly

deactivate () {
    unset -f pydoc >/dev/null 2>&1

    # reset old environment variables
    # ! [ -z ${VAR+_} ] returns true if VAR is declared at all
    if ! [ -z "${_OLD_VIRTUAL_PATH+_}" ] ; then
        PATH="$_OLD_VIRTUAL_PATH"
        export PATH
        unset _OLD_VIRTUAL_PATH
    fi
    if ! [ -z "${_OLD_VIRTUAL_PYTHONHOME+_}" ] ; then
        PYTHONHOME="$_OLD_VIRTUAL_PYTHONHOME"
        export PYTHONHOME
        unset _OLD_VIRTUAL_PYTHONHOME
    fi

    # This should detect bash and zsh, which have a hash command that must
    # be called to get it to forget past commands.  Without forgetting
    # past commands the $PATH changes we made may not be respected
    if [ -n "${BASH-}" ] || [ -n "${ZSH_VERSION-}" ] ; then
        hash -r 2>/dev/null
    fi

    if ! [ -z "${_OLD_VIRTUAL_PS1+_}" ] ; then
        PS1="$_OLD_VIRTUAL_PS1"
        export PS1
        unset _OLD_VIRTUAL_PS1
    fi

    unset VIRTUAL_ENV
    if [ ! "${1-}" = "nondestructive" ] ; then
    # Self destruct!
        unset -f deactivate
    fi
}

# unset irrelevant variables
deactivate nondestructive

VIRTUAL_ENV="$(if [ "$OSTYPE" "==" "cygwin" ]; then cygpath -u 'C:\Users\account_name\Documents\python-projects\project\venv'; else echo '/C/Users/account_name/Documents/python-projects/project/venv'; fi;)"
export VIRTUAL_ENV

_OLD_VIRTUAL_PATH="$PATH"
PATH="$VIRTUAL_ENV/Scripts:$PATH"
export PATH

# unset PYTHONHOME if set
if ! [ -z "${PYTHONHOME+_}" ] ; then
    _OLD_VIRTUAL_PYTHONHOME="$PYTHONHOME"
    unset PYTHONHOME
fi

if [ -z "${VIRTUAL_ENV_DISABLE_PROMPT-}" ] ; then
    _OLD_VIRTUAL_PS1="$PS1"
    if [ "x" != x ] ; then
        PS1="$PS1"
    else
        PS1="(`basename \"$VIRTUAL_ENV\"`) $PS1"
    fi
    export PS1
fi

# Make sure to unalias pydoc if it's already there
alias pydoc 2>/dev/null >/dev/null && unalias pydoc

pydoc () {
    python -m pydoc "$@"
}

# This should detect bash and zsh, which have a hash command that must
# be called to get it to forget past commands.  Without forgetting
# past commands the $PATH changes we made may not be respected
if [ -n "${BASH-}" ] || [ -n "${ZSH_VERSION-}" ] ; then
    hash -r 2>/dev/null
fi

Answer 1

VIRTUAL_ENV="$(if [ "$OSTYPE" "==" "cygwin" ]; then cygpath -u 'C:\Users\account_name\Documents\python-projects\project\venv'; else echo '/C/Users/account_name/Documents/python-projects/project/venv'; fi;)"
export VIRTUAL_ENV

_OLD_VIRTUAL_PATH="$PATH"
PATH="$VIRTUAL_ENV/Scripts:$PATH"
export PATH

# unset PYTHONHOME if set
if ! [ -z "${PYTHONHOME+_}" ] ; then
    _OLD_VIRTUAL_PYTHONHOME="$PYTHONHOME"
    unset PYTHONHOME
fi

if [ -z "${VIRTUAL_ENV_DISABLE_PROMPT-}" ] ; then
    _OLD_VIRTUAL_PS1="$PS1"
    if [ "x" != x ] ; then
        PS1="$PS1"
    else
        PS1="(`basename \"$VIRTUAL_ENV\"`) $PS1"
    fi
    export PS1
fi

# Make sure to unalias pydoc if it's already there
alias pydoc 2>/dev/null >/dev/null && unalias pydoc

pydoc () {
    python -m pydoc "$@"
}

# This should detect bash and zsh, which have a hash command that must
# be called to get it to forget past commands.  Without forgetting
# past commands the $PATH changes we made may not be respected
if [ -n "${BASH-}" ] || [ -n "${ZSH_VERSION-}" ] ; then
    hash -r 2>/dev/null
fi

# This file must be used with "source bin/activate" *from bash*
# you cannot run it directly

deactivate () {
    unset -f pydoc >/dev/null 2>&1

    # reset old environment variables
    # ! [ -z ${VAR+_} ] returns true if VAR is declared at all
    if ! [ -z "${_OLD_VIRTUAL_PATH+_}" ] ; then
        PATH="$_OLD_VIRTUAL_PATH"
        export PATH
        unset _OLD_VIRTUAL_PATH
    fi
    if ! [ -z "${_OLD_VIRTUAL_PYTHONHOME+_}" ] ; then
        PYTHONHOME="$_OLD_VIRTUAL_PYTHONHOME"
        export PYTHONHOME
        unset _OLD_VIRTUAL_PYTHONHOME
    fi

    # This should detect bash and zsh, which have a hash command that must
    # be called to get it to forget past commands.  Without forgetting
    # past commands the $PATH changes we made may not be respected
    if [ -n "${BASH-}" ] || [ -n "${ZSH_VERSION-}" ] ; then
        hash -r 2>/dev/null
    fi

    if ! [ -z "${_OLD_VIRTUAL_PS1+_}" ] ; then
        PS1="$_OLD_VIRTUAL_PS1"
        export PS1
        unset _OLD_VIRTUAL_PS1
    fi

    unset VIRTUAL_ENV
    if [ ! "${1-}" = "nondestructive" ] ; then
    # Self destruct!
        unset -f deactivate
    fi
}

# unset irrelevant variables
# deactivate nondestructive