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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2013, 2014, 2015 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2014 Deck Pickard <deck.r.pickard@gmail.com>
;;; Copyright © 2015, 2016 Alex Kost <alezost@gmail.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 scripts)
#:use-module (guix grafts)
#:use-module (guix utils)
#:use-module (guix ui)
#:use-module (guix store)
#:use-module (guix monads)
#:use-module (guix packages)
#:use-module (guix derivations)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-37)
#:use-module (ice-9 match)
#:export (args-fold*
parse-command-line
maybe-build
build-package
build-package-source))
;;; Commentary:
;;;
;;; General code for Guix scripts.
;;;
;;; Code:
(define (args-fold* options unrecognized-option-proc operand-proc . seeds)
"A wrapper on top of `args-fold' that does proper user-facing error
reporting."
(catch 'misc-error
(lambda ()
(apply args-fold options unrecognized-option-proc
operand-proc seeds))
(lambda (key proc msg args . rest)
;; XXX: MSG is not i18n'd.
(leave (_ "invalid argument: ~a~%")
(apply format #f msg args)))))
(define (environment-build-options)
"Return additional build options passed as environment variables."
(arguments-from-environment-variable "GUIX_BUILD_OPTIONS"))
(define %default-argument-handler
;; The default handler for non-option command-line arguments.
(lambda (arg result)
(alist-cons 'argument arg result)))
(define* (parse-command-line args options seeds
#:key
(argument-handler %default-argument-handler))
"Parse the command-line arguments ARGS as well as arguments passed via the
'GUIX_BUILD_OPTIONS' environment variable according to OPTIONS (a list of
SRFI-37 options) and return the result, seeded by SEEDS.
Command-line options take precedence those passed via 'GUIX_BUILD_OPTIONS'.
ARGUMENT-HANDLER is called for non-option arguments, like the 'operand-proc'
parameter of 'args-fold'."
(define (parse-options-from args seeds)
;; Actual parsing takes place here.
(apply args-fold* args options
(lambda (opt name arg . rest)
(leave (_ "~A: unrecognized option~%") name))
argument-handler
seeds))
(call-with-values
(lambda ()
(parse-options-from (environment-build-options) seeds))
(lambda seeds
;; ARGS take precedence over what the environment variable specifies.
(parse-options-from args seeds))))
(define* (maybe-build drvs
#:key dry-run? use-substitutes?)
"Show what will/would be built, and actually build DRVS, unless DRY-RUN? is
true."
(with-monad %store-monad
(>>= (show-what-to-build* drvs
#:dry-run? dry-run?
#:use-substitutes? use-substitutes?)
(lambda (_)
(if dry-run?
(return #f)
(built-derivations drvs))))))
(define* (build-package package
#:key dry-run? (use-substitutes? #t)
#:allow-other-keys
#:rest build-options)
"Build PACKAGE using BUILD-OPTIONS acceptable by 'set-build-options'.
Show what and how will/would be built."
(mlet %store-monad ((grafting? ((lift0 %graft? %store-monad))))
(apply set-build-options*
#:use-substitutes? use-substitutes?
(strip-keyword-arguments '(#:dry-run?) build-options))
(mlet %store-monad ((derivation (package->derivation
package #:graft? (and (not dry-run?)
grafting?))))
(mbegin %store-monad
(maybe-build (list derivation)
#:use-substitutes? use-substitutes?
#:dry-run? dry-run?)
(return (show-derivation-outputs derivation))))))
(define* (build-package-source package
#:key dry-run? (use-substitutes? #t)
#:allow-other-keys
#:rest build-options)
"Build PACKAGE source using BUILD-OPTIONS."
(mbegin %store-monad
(apply set-build-options*
#:use-substitutes? use-substitutes?
(strip-keyword-arguments '(#:dry-run?) build-options))
(mlet %store-monad ((derivation (origin->derivation
(package-source package))))
(mbegin %store-monad
(maybe-build (list derivation)
#:use-substitutes? use-substitutes?
#:dry-run? dry-run?)
(return (show-derivation-outputs derivation))))))
;;; scripts.scm ends here
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