Package `exec-path-from-shell` isn't setting PATH variables from `.zshenv` on MacOS

Question

I'm running a GUI Emacs compiled from the master git branch on MacOS El Capitan. I'm using the package exec-path-from-shell to set several environment variables I have configured in my ~/.zshenv file. However, none of them inherited in Emacs. GOPATH and SHELL are not set and PATH is not the PATH I have configured in my `~/.zshenv Currently I have the package configured with

(use-package exec-path-from-shell
  :ensure t
  :defer f
  :config
  (exec-path-from-shell-copy-env "GOPATH")
  (exec-path-from-shell-copy-env "SHELL")
  (exec-path-from-shell-copy-env "PATH")
  (when (memq window-system '(mac ns x))
    (exec-path-from-shell-initialize)))

After launching Emacs, M-x getenv for PATH returns /usr/bin:/usr/sbin/:/bin/:/sbin

However, executing shell-command via M-! with zsh -l -i -c 'echo $PATHreturns the PATH as I have set it in my ~/.zshenv file.

The ~/.zshenv looks like

export PATH="/Users/idclark/anaconda/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/texbin:/Applications/Postgres.app/Contents/Versions/9.4/bin:/Users/idclark/Library/Android/sdk/tools:/Users/idclark/Library/Android/sdk/platform-tools"
export JAVA_HOME="$(/usr/libexec/java_home)"
export MANPATH="/usr/local/man:$MANPATH"
export NVM_DIR="~/.nvm"
export GOPATH="/Users/idclark/go/bin"

Is this a problem with my zsh config or how how I'm initializing the exec-path-from-shell package?

Answer 1

You should remove :defer f, because you don't want exec-path-from-shell to be defer loaded and you are going to use function from it when Emacs starts. Try something like the following

(use-package exec-path-from-shell
  :ensure t
  :if (memq window-system '(mac ns x))
  :config
  (setq exec-path-from-shell-variables '("PATH" "GOPATH"))
  (exec-path-from-shell-initialize))

(I don't know why you need to set SHELL, Emacs sets it automatically and correctly for me, like HOME)

If you are not sure if you are using use-package correctly, expand it via something like emacs-lisp-macroexpand and check the result.