Path Mac Yosemite上的Emacs flymake

emacs中的Flymake在更新到Yosemite之前一直正常工作。但现在它在抱怨：

Flymake: Failed to launch syntax check process 'pychecker' with args (<filename>_flymake.py): Searching for program: no such file or directory, pychecker. Flymake will be switched OFF.

这是

/usr/local/bin/pychecker

：

#! /bin/sh

pyflakes "$1"
pep8 --repeat "$1" --max-line-length=80 --ignore=E123,E133,E226,E501
true

下面是

$PATH

：

/Users/<user>/Envs/<venv>/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/X11/bin:/usr/texbin

/Users//Envs//bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/X11/bin:/usr/texbin

其中，

是我的用户名，

是当前活动的虚拟环境

pychecker

如果从shell运行，则可以正常工作

---

我通过键入

emacsgui

（

alias emacsgui='open-a emacs'

）从shell启动emacs，通常是在激活了venv的情况下。我还尝试在没有激活任何venv的情况下打开emacs，但问题仍然存在。问题是什么？

我通过将其添加到我的

.emacs

文件中解决了这个问题：

(defun set-exec-path-from-shell-PATH ()
  (let ((path-from-shell (replace-regexp-in-string
                          "[ \t\n]*$"
                          ""
                          (shell-command-to-string "$SHELL --login -i -c 'echo $PATH'"))))
    (setenv "PATH" path-from-shell)
    (setq exec-path (split-string path-from-shell path-separator))))

(when (and window-system (eq system-type 'darwin))
  ;; When started from Emacs.app or similar, ensure $PATH
  ;; is the same the user would see in Terminal.app
  (set-exec-path-from-shell-PATH))

---

如何从shell RET安装M-x软件包RET exec路径？

(defun set-exec-path-from-shell-PATH ()
  (let ((path-from-shell (replace-regexp-in-string
                          "[ \t\n]*$"
                          ""
                          (shell-command-to-string "$SHELL --login -i -c 'echo $PATH'"))))
    (setenv "PATH" path-from-shell)
    (setq exec-path (split-string path-from-shell path-separator))))

(when (and window-system (eq system-type 'darwin))
  ;; When started from Emacs.app or similar, ensure $PATH
  ;; is the same the user would see in Terminal.app
  (set-exec-path-from-shell-PATH))