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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2014, 2015, 2016, 2017 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2015 Joshua S. Grant <jgrant@parenthetical.io>
;;; Copyright © 2017 Mathieu Othacehe <m.othacehe@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 GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (gnu)
#:use-module (guix i18n)
#:use-module (guix utils)
#:use-module (srfi srfi-34)
#:use-module (srfi srfi-35)
#:use-module (ice-9 match)
#:use-module (guix packages)
#:use-module (gnu packages)
#:use-module (gnu services)
#:export (use-package-modules
use-service-modules
use-system-modules))
;;; Commentary:
;;;
;;; This composite module re-exports core parts the (gnu …) public modules.
;;;
;;; Code:
(eval-when (eval load compile)
(begin
(define %public-modules
'((gnu system)
(gnu system mapped-devices)
(gnu system file-systems)
(gnu bootloader)
(gnu bootloader grub)
(gnu system pam)
(gnu system shadow) ; 'user-account'
(gnu system linux-initrd)
(gnu system nss)
(gnu services)
(gnu services base)
(gnu packages)
(gnu packages base)
(guix gexp))) ; so gexps can be used
(for-each (let ((i (module-public-interface (current-module))))
(lambda (m)
(module-use! i (resolve-interface m))))
%public-modules)))
(define (%try-use-modules modules location make-hint)
"Attempt to load all of MODULES. Report errors as coming from LOCATION, a
<location> record, and use MAKE-HINT to produce a fix hint."
(define (location->string loc)
(match loc
(#f "")
(($ <location> file line column)
(format #f "~a:~a:~a: " file line column))))
(for-each (lambda (module)
(catch 'misc-error
(lambda ()
(process-use-modules `((,module))))
(lambda _
(raise
(apply
make-compound-condition
(condition
(&message
(message (format #f (G_ "module ~a not found")
module))))
(condition
(&error-location (location location)))
(or (and=> (make-hint module) list)
'()))))))
modules))
(define (package-module-hint module)
(define last-name
(match module
((_ ... last)
(symbol->string last))))
(match (find-packages-by-name last-name)
(()
(condition
(&fix-hint
(hint (G_ "\
You may use @command{guix package --show=foo | grep location} to search
for the location of package @code{foo}.
If you get the line @code{location: gnu/packages/bar.scm:174:2},
add @code{bar} to the @code{use-package-modules} form.")))))
((package _ ...)
(condition
(&fix-hint
(hint (format #f (G_ "\
Try adding @code{(use-package-modules ~a)}.")
(basename (location-file (package-location package))
".scm"))))))))
(define (service-module-hint module)
(define last-name
(match module
((_ ... last)
last)))
(match (lookup-service-types last-name)
(()
(condition
(&fix-hint
(hint (format #f (G_ "\
You may use @command{guix system search ~a} to search for a service
matching @code{~a}.
If you get the line @code{location: gnu/services/foo.scm:188:2},
add @code{foo} to the @code{use-service-modules} form.")
last-name last-name)))))
((package _ ...)
(condition
(&fix-hint
(hint (format #f (G_ "\
Try adding @code{(use-service-modules ~a)}.")
(basename (location-file (service-type-location package))
".scm"))))))))
(define-syntax-rule (try-use-modules hint modules ...)
(eval-when (expand load eval)
(%try-use-modules '(modules ...)
(source-properties->location
(current-source-location))
hint)))
(define-syntax-rule (use-package-modules module ...)
(try-use-modules package-module-hint
(gnu packages module) ...))
(define-syntax-rule (use-service-modules module ...)
(try-use-modules service-module-hint
(gnu services module) ...))
(define-syntax-rule (use-system-modules module ...)
(try-use-modules (const #f) ;no hint
(gnu system module) ...))
;;; gnu.scm ends here
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