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;;; guix-profiles.el --- Guix profiles
;; Copyright © 2014 Alex Kost <alezost@gmail.com>
;; This file is part of GNU Guix.
;; GNU Guix is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; GNU Guix is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;; Code:
(defvar guix-user-profile
(expand-file-name "~/.guix-profile")
"User profile.")
(defvar guix-default-profile
(concat (or (getenv "NIX_STATE_DIR") "@guix_localstatedir@/guix")
"/profiles/per-user/"
(getenv "USER")
"/guix-profile")
"Default Guix profile.")
(defvar guix-current-profile guix-default-profile
"Current profile.")
(defun guix-profile-prompt (&optional default)
"Prompt for profile and return it.
Use DEFAULT as a start directory. If it is nil, use
`guix-current-profile'."
(let* ((path (read-file-name "Profile: "
(file-name-directory
(or default guix-current-profile))))
(path (directory-file-name (expand-file-name path))))
(if (string= path guix-user-profile)
guix-default-profile
path)))
(defun guix-set-current-profile (path)
"Set `guix-current-profile' to PATH.
Interactively, prompt for PATH. With prefix, use
`guix-default-profile'."
(interactive
(list (if current-prefix-arg
guix-default-profile
(guix-profile-prompt))))
(setq guix-current-profile path)
(message "Current profile has been set to '%s'."
guix-current-profile))
(provide 'guix-profiles)
;;; guix-profiles.el ends here