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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2018 Pierre Neidhardt <mail@ambrevar.xyz>
;;;
;;; 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 gx-download)
#:use-module (guix gexp)
#:use-module (guix store)
#:use-module (guix monads)
#:use-module (guix records)
#:use-module (guix packages)
#:use-module (guix utils)
#:use-module (guix modules)
;; #:autoload (guix build-system gnu) (standard-packages)
#:use-module (ice-9 match)
#:use-module (ice-9 vlist)
#:use-module (srfi srfi-1)
#:export (gx-reference
gx-reference?
gx-reference-hash
gx-fetch
gx-version
gx-file-name))
;;; Commentary:
;;;
;;; An <origin> method that uses gx to fetch a specific hash over IPFS.
;;; See https://github.com/whyrusleeping/gx.
;;; The hash is specified with a <gx-reference> object.
;;;
;;; Code:
(define-record-type* <gx-reference>
gx-reference make-gx-reference
gx-reference?
(hash gx-reference-hash))
(define (gx-package)
"Return the default gx package."
(let ((distro (resolve-interface '(gnu packages ipfs))))
(module-ref distro 'gx)))
(define* (gx-fetch ref hash-algo hash
#:optional name
#:key (system (%current-system)) (guile (default-guile))
(gx (gx-package)))
"Return a fixed-output derivation that fetches REF, a <gx-reference>
object. The output is expected to have recursive hash HASH of type
HASH-ALGO (a symbol). Use NAME as the file name, or a generic name if #f."
;; (define inputs
;; ;; When doing 'git clone --recursive', we need sed, grep, etc. to be
;; ;; available so that 'git submodule' works.
;; ;; (if (git-reference-recursive? ref)
;; ;; (standard-packages)
;; ;; '())
;; )
;; (define zlib
;; (module-ref (resolve-interface '(gnu packages compression)) 'zlib))
;; (define config.scm
;; (scheme-file "config.scm"
;; #~(begin
;; (define-module (guix config)
;; #:export (%libz))
;; (define %libz
;; #+(file-append zlib "/lib/libz")))))
;; (define modules
;; (cons `((guix config) => ,config.scm)
;; (delete '(guix config)
;; (source-module-closure '((guix build git)
;; (guix build utils)
;; (guix build download-nar))))))
(define build
(with-imported-modules '((guix build gx)
(guix build utils))
#~(begin
(use-modules (guix build gx)
;; (guix build utils)
;; (guix build download-nar)
;; (ice-9 match)
)
;; The 'git submodule' commands expects Coreutils, sed,
;; grep, etc. to be in $PATH.
;; (set-path-environment-variable "PATH" '("bin")
;; (match '#+inputs
;; (((names dirs outputs ...) ...)
;; dirs)))
(or (gx-fetch '#$(gx-reference-hash ref)
#$output
#:gx-command (string-append #+gx "/bin/gx"))
;; (download-nar #$output)
))))
(mlet %store-monad ((guile (package->derivation guile system)))
(gexp->derivation (or name "gx-checkout") build
#:system system
#:local-build? #t
#:hash-algo hash-algo
#:hash hash
#:recursive? #t
#:guile-for-build guile)))
(define (gx-version version revision hash)
"Return the version string for packages using gx-download."
(string-append version "-" revision "." (string-take hash 7)))
(define (gx-file-name name version)
"Return the file-name for packages using gx-download."
(string-append name "-" version "-checkout"))
;;; gx-download.scm ends here
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