105 lines
3.9 KiB
Scheme
105 lines
3.9 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
||
;;; Copyright © 2015, 2016, 2019 Ludovic Courtès <ludo@gnu.org>
|
||
;;; Copyright © 2015 Mathieu Lirzin <mthl@gnu.org>
|
||
;;; Copyright © 2020 Simon Tournier <zimon.toutoune@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 (guix scripts edit)
|
||
#:use-module (guix ui)
|
||
#:use-module (guix scripts)
|
||
#:use-module ((guix scripts build) #:select (%standard-build-options))
|
||
#:use-module (guix utils)
|
||
#:use-module (gnu packages)
|
||
#:use-module (srfi srfi-1)
|
||
#:use-module (srfi srfi-37)
|
||
#:export (%editor
|
||
guix-edit))
|
||
|
||
(define %options
|
||
(list (find (lambda (option)
|
||
(member "load-path" (option-names option)))
|
||
%standard-build-options)
|
||
(option '(#\h "help") #f #f
|
||
(lambda args
|
||
(show-help)
|
||
(exit 0)))
|
||
(option '(#\V "version") #f #f
|
||
(lambda args
|
||
(show-version-and-exit "guix edit")))))
|
||
|
||
(define (show-help)
|
||
(display (G_ "Usage: guix edit PACKAGE...
|
||
Start $VISUAL or $EDITOR to edit the definitions of PACKAGE...\n"))
|
||
(newline)
|
||
(display (G_ "
|
||
-L, --load-path=DIR prepend DIR to the package module search path"))
|
||
(newline)
|
||
(display (G_ "
|
||
-h, --help display this help and exit"))
|
||
(display (G_ "
|
||
-V, --version display version information and exit"))
|
||
(newline)
|
||
(show-bug-report-information))
|
||
|
||
(define %editor
|
||
;; Nano is sensible default, as it is installed by base system.
|
||
;; For development, user can set custom value for $EDITOR.
|
||
(make-parameter (or (getenv "VISUAL") (getenv "EDITOR") "nano")))
|
||
|
||
(define (search-path* path file)
|
||
"Like 'search-path' but exit if FILE is not found."
|
||
(let ((absolute-file-name (search-path path file)))
|
||
(unless absolute-file-name
|
||
;; Shouldn't happen unless somebody fiddled with the 'location' field.
|
||
(leave (G_ "file '~a' not found in search path ~s~%")
|
||
file path))
|
||
absolute-file-name))
|
||
|
||
(define (location->location-specification location)
|
||
"Return the location specification for LOCATION for a typical editor command
|
||
line."
|
||
(list (string-append "+"
|
||
(number->string
|
||
(location-line location)))
|
||
(search-path* %load-path (location-file location))))
|
||
|
||
|
||
(define (guix-edit . args)
|
||
(define (parse-arguments)
|
||
;; Return the list of package names.
|
||
(args-fold* args %options
|
||
(lambda (opt name arg result)
|
||
(leave (G_ "~A: unrecognized option~%") name))
|
||
cons
|
||
'()))
|
||
|
||
(with-error-handling
|
||
(let* ((specs (reverse (parse-arguments)))
|
||
(locations (map specification->location specs)))
|
||
|
||
(catch 'system-error
|
||
(lambda ()
|
||
(let ((file-names (append-map location->location-specification
|
||
locations)))
|
||
;; Use `system' instead of `exec' in order to sanely handle
|
||
;; possible command line arguments in %EDITOR.
|
||
(exit (system (string-join (cons (%editor) file-names))))))
|
||
(lambda args
|
||
(let ((errno (system-error-errno args)))
|
||
(leave (G_ "failed to launch '~a': ~a~%")
|
||
(%editor) (strerror errno))))))))
|