guix-play/guix/scripts/import/opam.scm
Alice BRENON fc29c80b96
guix: opam: More flexibility in the importer.
* guix/scripts/import/opam.scm: Pass all instances of --repo as a list
  to the importer.
* guix/import/opam.scm (opam-fetch): Stop expecting "expanded"
  repositories and call get-opam-repository instead to keep values
  "symbolic" as long as possible and factorize.
  (get-opam-repository): Use the same repository source as CLI opam does
  (i.e. HTTP-served index.tar.gz instead of git repositories).
  (find-latest-version): Be more flexible on the repositories structure
  instead of expecting packages/PACKAGE-NAME/PACKAGE-NAME.VERSION/.
* tests/opam.scm: Update the call to opam->guix-package since repo is
  now expected to be a list and remove the mocked get-opam-repository
  deprecated by the support for local folders by the actual
  implementation.
* doc/guix.texi: Document the new semantics and valid arguments for the
  --repo option.

Signed-off-by: Julien Lepiller <julien@lepiller.eu>
2021-08-21 00:05:21 +02:00

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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2018 Julien Lepiller <julien@lepiller.eu>
;;; Copyright © 2021 Sarah Morgensen <iskarian@mgsn.dev>
;;; Copyright © 2021 Alice Brenon <alice.brenon@ens-lyon.fr>
;;;
;;; 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 import opam)
#:use-module (guix ui)
#:use-module (guix utils)
#:use-module (guix scripts)
#:use-module (guix import opam)
#:use-module (guix scripts import)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-11)
#:use-module (srfi srfi-37)
#:use-module (ice-9 match)
#:use-module (ice-9 format)
#:export (guix-import-opam))
;;;
;;; Command-line options.
;;;
(define %default-options
'())
(define (show-help)
(display (G_ "Usage: guix import opam PACKAGE-NAME
Import and convert the opam package for PACKAGE-NAME.\n"))
(display (G_ "
-h, --help display this help and exit"))
(display (G_ "
-r, --recursive import packages recursively"))
(display (G_ "
--repo import packages from this opam repository (name, URL or local path)
can be used more than once"))
(display (G_ "
-V, --version display version information and exit"))
(newline)
(show-bug-report-information))
(define %options
;; Specification of the command-line options.
(cons* (option '(#\h "help") #f #f
(lambda args
(show-help)
(exit 0)))
(option '(#\V "version") #f #f
(lambda args
(show-version-and-exit "guix import opam")))
(option '(#f "repo") #t #f
(lambda (opt name arg result)
(alist-cons 'repo arg result)))
(option '(#\r "recursive") #f #f
(lambda (opt name arg result)
(alist-cons 'recursive #t result)))
%standard-import-options))
;;;
;;; Entry point.
;;;
(define (guix-import-opam . args)
(define (parse-options)
;; Return the alist of option values.
(parse-command-line args %options (list %default-options)
#:build-options? #f))
(let* ((opts (parse-options))
(repo (filter-map (match-lambda
(('repo . name) name)
(_ #f)) opts))
(args (filter-map (match-lambda
(('argument . value)
value)
(_ #f))
(reverse opts))))
(match args
((package-name)
(if (assoc-ref opts 'recursive)
;; Recursive import
(map (match-lambda
((and ('package ('name name) . rest) pkg)
`(define-public ,(string->symbol name)
,pkg))
(_ #f))
(opam-recursive-import package-name #:repo repo))
;; Single import
(let ((sexp (opam->guix-package package-name #:repo repo)))
(unless sexp
(leave (G_ "failed to download meta-data for package '~a'~%")
package-name))
sexp)))
(()
(leave (G_ "too few arguments~%")))
((many ...)
(leave (G_ "too many arguments~%"))))))