;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2019 Pierre Neidhardt <mail@ambrevar.xyz>
;;;
;;; This file is not 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 (nonguix utils)
  #:use-module (srfi srfi-26)
  #:use-module (ice-9 match)
  #:use-module (ice-9 textual-ports)
  #:use-module (ice-9 popen)
  #:use-module (guix utils)
  #:use-module (guix packages))

(define-public (to32 package64)
  "Build package for i686-linux.
Only x86_64-linux and i686-linux are supported.
- If i686-linux, return the package unchanged.
- If x86_64-linux, return the 32-bit version of the package."
  (match (%current-system)
    ("x86_64-linux"
     (package
       (inherit package64)
       (arguments `(#:system "i686-linux"
                    ,@(package-arguments package64)))))
    (_ package64)))