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;; disfluid, implementation of the Solid specification
;; Copyright (C) 2022  Vivien Kraus

;; This program is free software: you can redistribute it and/or modify
;; it under the terms of the GNU Affero General Public License as
;; published by the Free Software Foundation, either version 3 of the
;; License, or (at your option) any later version.

;; This program 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 Affero General Public License for more details.

;; You should have received a copy of the GNU Affero General Public License
;; along with this program.  If not, see <https://www.gnu.org/licenses/>.

(define-module (disfluid maintainer bootstrap-guix)
  #:use-module (guix gexp)
  #:use-module (guix modules)
  #:use-module (gnu packages base)
  #:use-module (gnu packages guile-xyz)
  #:declarative? #t
  #:export (guix.scm))

;; guix.scm is the file that has been generated by hall
;; distribution-system. It is very incomplete yet, because it lacks
;; the extra phases to make hall work correctly.

;; We are expected to have cwd to the top of the checkout of a git
;; repository, possibly modified. The scan argument should be obtained
;; from ((@ disfluid maintainer scan-source) scan-source).

(define (hall.scm scan)
  (computed-file
   "hall.scm"
   (with-imported-modules
       (source-module-closure '((guix build utils)))
     #~(begin
         (use-modules (guix build utils))
         (copy-file #$(local-file (string-append (getcwd) "/hall.scm"))
                    "hall.scm")
         (invoke #$(file-append sed "/bin/sed")
                 "-i"
                 (format #f "s/SNAPSHOT/~a/g" #$(assq-ref scan 'version))
                 "hall.scm")
         (copy-file "hall.scm" #$output)))))

(define (guix.scm scan)
  (computed-file
   "guix.scm"
   (with-imported-modules
       (source-module-closure '((guix build utils)))
     #~(begin
         (use-modules (guix build utils))
         (copy-file #$(hall.scm scan) "hall.scm")
         (setenv "HOME" (getcwd))
         (invoke #$(file-append guile-hall "/bin/hall") "distribution-system" "-x")
         (copy-file "guix.scm" #$output)))))