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doc emacs: Improve documentation on initial setup.

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Reported by ngz on #guix.

* doc/emacs.texi (Emacs Initial Setup): Describe how to configure
  "guix.el" in the case of binary installation and when Guix is not
  installed.
This commit is contained in:
Alex Kost 2015-06-07 21:43:58 +03:00
parent 00a8dae2a6
commit a72f18a58b
1 changed files with 39 additions and 13 deletions
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52
doc/emacs.texi
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@ -45,24 +45,50 @@ used for interacting with the Guile process.
@end itemize
When it is done, add the following into your init file (@pxref{Init
File,,, emacs, The GNU Emacs Manual}):
@example
(require 'guix-init nil t)
@end example
However there is a chance that @code{load-path} of your Emacs does not
contain a directory with ``guix.el'' (usually it is
@file{/usr/share/emacs/site-lisp/}). In that case you need to add it
before requiring (@pxref{Lisp Libraries,,, emacs, The GNU Emacs
Manual}):
When it is done ``guix.el'' may be configured by requiring a special
@code{guix-init} file---i.e., by adding the following code into your
init file (@pxref{Init File,,, emacs, The GNU Emacs Manual}):
@example
(add-to-list 'load-path "/path/to/directory-with-guix.el")
(require 'guix-init)
(require 'guix-init nil t)
@end example
So the only thing you need to figure out is where the directory with
elisp files for Guix is placed. It depends on how you installed Guix:
@itemize
@item
If it was installed by a package manager of your distribution or by a
usual @code{./configure && make && make install} command sequence, then
elisp files are placed in a standard directory with Emacs packages
(usually it is @file{/usr/share/emacs/site-lisp/}), which is already in
@code{load-path}, so there is no need to add that directory there.
@item
If you used a binary installation method (@pxref{Binary Installation}),
then Guix is installed somewhere in the store, so the elisp files are
placed in @file{/gnu/store/@dots{}-guix-0.8.2/share/emacs/site-lisp/} or
alike. However it is not recommended to refer directly to a store
directory. Instead you can install Guix using Guix itself with
@command{guix package -i guix} command (@pxref{Invoking guix package})
and add @file{~/.guix-profile/share/emacs/site-lisp/} directory to
@code{load-path} variable.
@item
If you did not install Guix at all and prefer a hacking way
(@pxref{Running Guix Before It Is Installed}), along with augmenting
@code{load-path} you need to set @code{guix-load-path} variable to the
same directory, so your final configuration will look like this:
@example
(let ((dir "/path/to/your-guix-git-tree/emacs"))
(add-to-list 'load-path dir)
(setq guix-load-path dir))
(require 'guix-init nil t)
@end example
@end itemize
By default, along with autoloading (@pxref{Autoload,,, elisp, The GNU
Emacs Lisp Reference Manual}) the main interactive commands for
``guix.el'' (@pxref{Emacs Commands}), requiring @code{guix-init} will