Homepage: https://github.com/purcell/exec-path-from-shell
Author: Steve Purcell
Updated:
Get environment variables such as $PATH from the shell
On OS X (and perhaps elsewhere) the $PATH environment variable and
`exec-path' used by a windowed Emacs instance will usually be the
system-wide default path, rather than that seen in a terminal
window.
This library allows the user to set Emacs' `exec-path' and $PATH
from the shell path, so that `shell-command', `compile' and the
like work as expected.
It also allows other environment variables to be retrieved from the
shell, so that Emacs will see the same values you get in a terminal.
If you use a non-POSIX-standard shell like "tcsh" or "fish", your
shell will be asked to execute "sh" as a subshell in order to print
out the variables in a format which can be reliably parsed. "sh"
must be a POSIX-compliant shell in this case.
Note that shell variables which have not been exported as
environment variables (e.g. using the "export" keyword) may not be
visible to `exec-path-from-shell'.
Installation:
ELPA packages are available on Marmalade and MELPA. Alternatively,
place this file on a directory in your `load-path', and explicitly
require it.
Usage:
(require 'exec-path-from-shell) ;; if not using the ELPA package
(exec-path-from-shell-initialize)
Customize `exec-path-from-shell-variables' to modify the list of
variables imported.
If you use your Emacs config on other platforms, you can instead
make initialization conditional as follows:
(when (memq window-system '(mac ns))
(exec-path-from-shell-initialize))
Alternatively, you can use `exec-path-from-shell-copy-envs' or
`exec-path-from-shell-copy-env' directly, e.g.
(exec-path-from-shell-copy-env "PYTHONPATH")