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| | ;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2017 Andy Wingo <wingo@pobox.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 potluck build-systems)
#:use-module ((guix build-system) #:select (build-system?))
#:use-module ((gnu packages) #:select (scheme-modules))
#:use-module (ice-9 match)
#:export (build-system-by-name all-potluck-build-system-names))
(define all-build-systems
(delay
(let* ((gbs (or (search-path %load-path "guix/build-system.scm")
(error "can't find (guix build-system)")))
(root (dirname (dirname gbs)))
(by-name (make-hash-table)))
(for-each (lambda (iface)
(module-for-each
(lambda (k var)
(let* ((str (symbol->string k))
(pos (string-contains str "-build-system"))
(val (variable-ref var)))
(when (and pos (build-system? val))
(let* ((head (substring str 0 pos))
(tail (substring str
(+ pos (string-length
"-build-system"))))
(name (string->symbol
(string-append head tail))))
(hashq-set! by-name name val)))))
iface))
(scheme-modules root "guix/build-system"))
by-name)))
(define (all-potluck-build-system-names)
(sort
(hash-map->list (lambda (k v) k) (force all-build-systems))
(lambda (a b) (string<? (symbol->string a) (symbol->string b)))))
(define (build-system-by-name name)
(hashq-ref (force all-build-systems) name))
|