~ruther/guix-local

abea77e3f0588a1f47106934296db5fe85d34d23 — Alex Kost 10 years ago 6588c28
emacs: Factorize searching for Emacs packages.

* emacs/guix-emacs.el: (guix-emacs-directories): New procedure.
(guix-emacs-find-autoloads-in-directory): Rename to...
(guix-emacs-find-autoloads): ... this.
(guix-emacs-load-autoloads): Remove.  Replace with...
(guix-emacs-autoload-packages): ... this.  New procedure.  At first,
find a list of directories with Emacs packages, then add them to
'load-path' and finally, load autoloads.
* doc/emacs.texi (Emacs Initial Setup): Adjust accordingly.
2 files changed, 41 insertions(+), 36 deletions(-)

M doc/emacs.texi
M emacs/guix-emacs.el
M doc/emacs.texi => doc/emacs.texi +1 -1
@@ 106,7 106,7 @@ for the built-in Emacs package system (@pxref{Package Installation,,,
emacs, The GNU Emacs Manual}).

You can activate Emacs packages installed in your profile whenever you
want using @kbd{M-x@tie{}guix-emacs-load-autoloads}.
want using @kbd{M-x@tie{}guix-emacs-autoload-packages}.


@node Emacs Package Management

M emacs/guix-emacs.el => emacs/guix-emacs.el +40 -35
@@ 57,7 57,7 @@ If PROFILE is nil, use `guix-user-profile'."
  (expand-file-name "share/emacs/site-lisp"
                    (or profile guix-user-profile)))

(defun guix-emacs-find-autoloads-in-directory (directory)
(defun guix-emacs-find-autoloads (directory)
  "Return a list of Emacs 'autoloads' files in DIRECTORY.
The files in the list do not have extensions (.el, .elc)."
  (cl-remove-duplicates


@@ 76,43 76,49 @@ The files in the list do not have extensions (.el, .elc)."
                      (not (file-directory-p file))))
                (directory-files directory 'full-name nil 'no-sort)))

(defun guix-emacs-find-autoloads (&optional profile)
  "Return list of autoloads of Emacs packages installed in PROFILE.
(defun guix-emacs-directories (&optional profile)
  "Return the list of directories under PROFILE that contain Emacs packages.
This includes both `share/emacs/site-lisp/guix.d/PACKAGE'
sub-directories and `share/emacs/site-lisp' itself.

If PROFILE is nil, use `guix-user-profile'.
Return nil if there are no emacs packages installed in PROFILE."
  (let ((elisp-root-dir (guix-emacs-directory profile)))
    (if (file-directory-p elisp-root-dir)
        (let ((elisp-pkgs-dir (expand-file-name "guix.d" elisp-root-dir))
              (root-autoloads (guix-emacs-find-autoloads-in-directory
                               elisp-root-dir)))
          (if (file-directory-p elisp-pkgs-dir)
              (let ((pkgs-autoloads
                     (cl-mapcan #'guix-emacs-find-autoloads-in-directory
                                (guix-emacs-subdirs elisp-pkgs-dir))))
                (append root-autoloads pkgs-autoloads))
            root-autoloads))
      (message "Directory '%s' does not exist." elisp-root-dir)
      nil)))
Return nil, if Emacs packages are not installed in PROFILE."
  (let ((root-dir (guix-emacs-directory (or profile guix-user-profile))))
    (when (file-directory-p root-dir)
      (let* ((pkgs-dir  (expand-file-name "guix.d" root-dir))
             (pkgs-dirs (when (file-directory-p pkgs-dir)
                          (guix-emacs-subdirs pkgs-dir))))
        (cons root-dir pkgs-dirs)))))

;;;###autoload
(defun guix-emacs-load-autoloads (&optional profile)
  "Load autoloads for Emacs packages installed in PROFILE.
If PROFILE is nil, use `guix-user-profile'.
Add autoloads directories to `load-path'."
(defun guix-emacs-autoload-packages (&rest profiles)
  "Autoload Emacs packages installed in PROFILES.
If PROFILES are not specified, use `guix-user-profile'.

'Autoload' means add directories with Emacs packages to
`load-path' and load 'autoloads' files matching
`guix-emacs-autoloads-regexp'."
  (interactive (list (if (fboundp 'guix-profile-prompt)
                         (funcall 'guix-profile-prompt)
                       guix-user-profile)))
  (let* ((autoloads     (guix-emacs-find-autoloads profile))
         (new-autoloads (cl-nset-difference autoloads
                                            guix-emacs-autoloads
                                            :test #'string=)))
    (dolist (file new-autoloads)
      (cl-pushnew (directory-file-name (file-name-directory file))
                  load-path
                  :test #'string=)
      (load file 'noerror))
    (setq guix-emacs-autoloads
          (append new-autoloads guix-emacs-autoloads))))
  (let ((profiles (or profiles
                      (list guix-user-profile))))
    (dolist (profile profiles)
      (let ((dirs (guix-emacs-directories profile)))
        (when dirs
          (let* ((autoloads     (cl-mapcan #'guix-emacs-find-autoloads
                                           dirs))
                 (new-autoloads (cl-nset-difference autoloads
                                                    guix-emacs-autoloads
                                                    :test #'string=)))
            (dolist (dir dirs)
              (cl-pushnew (directory-file-name dir)
                          load-path
                          :test #'string=))
            (dolist (file new-autoloads)
              (load file 'noerror))
            (setq guix-emacs-autoloads
                  (append new-autoloads guix-emacs-autoloads))))))))

(defun guix-emacs-load-autoloads-maybe ()
  "Load autoloads for Emacs packages if needed.


@@ 123,11 129,10 @@ See `guix-emacs-activate-after-operation' for details."
       ;; packages can be installed to another profile, and the
       ;; following code will not work (i.e., the autoloads for this
       ;; profile will not be loaded).
       (guix-emacs-load-autoloads guix-current-profile)))
       (guix-emacs-autoload-packages guix-current-profile)))

(when guix-package-enable-at-startup
  (add-to-list 'load-path (guix-emacs-directory))
  (guix-emacs-load-autoloads))
  (guix-emacs-autoload-packages))

(provide 'guix-emacs)