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#!/bin/sh
# aside from this initial boilerplate, this is actually -*- scheme -*- code
GUILE_LOAD_COMPILED_PATH="@guilemoduledir@:$GUILE_LOAD_COMPILED_PATH"
export GUILE_LOAD_COMPILED_PATH
main='(module-ref (resolve-interface '\''(guix-build)) '\'guix-build')'
exec ${GUILE-@GUILE@} -L "@guilemoduledir@" -l "$0" \
-c "(apply $main (cdr (command-line)))" "$@"
!#
;;; Guix --- Nix package management from Guile. -*- coding: utf-8 -*-
;;; Copyright (C) 2012 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of Guix.
;;;
;;; 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.
;;;
;;; 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 Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (guix-build)
#:use-module (guix store)
#:use-module (guix derivations)
#:use-module (guix packages)
#:use-module (ice-9 format)
#:use-module (ice-9 match)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-26)
#:use-module (srfi srfi-37)
#:autoload (distro) (find-packages-by-name)
#:export (guix-build))
(define _ (cut gettext <> "guix"))
(define N_ (cut ngettext <> <> <> "guix"))
(define %store
(open-connection))
(define (derivations-from-package-expressions exp)
"Eval EXP and return the corresponding derivation path."
(let ((p (eval exp (current-module))))
(if (package? p)
(package-derivation %store p)
(begin
(format (current-error-port)
(_ "expression `~s' does not evaluate to a package")
exp)
(exit 1)))))
;;;
;;; Command-line options.
;;;
(define %default-options
;; Alist of default option values.
'())
(define (show-version)
(display "guix-build (@PACKAGE_NAME@) @PACKAGE_VERSION@\n"))
(define (show-help)
(display (_ "Usage: guix-build [OPTION]... PACKAGE-OR-DERIVATION...
Build the given PACKAGE-OR-DERIVATION and return their output paths.\n"))
(display (_ "
-e, --expression=EXPR build the package EXPR evaluates to"))
(display (_ "
-K, --keep-failed keep build tree of failed builds"))
(display (_ "
-n, --dry-run do not build the derivations"))
(newline)
(display (_ "
-h, --help display this help and exit"))
(display (_ "
-V, --version display version information and exit"))
(newline)
(format #t (_ "
Report bugs to: ~a.~%") "@PACKAGE_BUGREPORT@"))
(define %options
;; Specifications of the command-line options.
(list (option '(#\h "help") #f #f
(lambda args
(show-help)
(exit 0)))
(option '(#\V "version") #f #f
(lambda args
(show-version)
(exit 0)))
(option '(#\e "expression") #t #f
(lambda (opt name arg result)
(alist-cons 'expression
(call-with-input-string arg read)
result)))
(option '(#\K "keep-failed") #f #f
(lambda (opt name arg result)
(alist-cons 'keep-failed? #t result)))
(option '(#\n "dry-run") #f #F
(lambda (opt name arg result)
(alist-cons 'dry-run? #t result)))))
;;;
;;; Entry point.
;;;
(define (guix-build . args)
(let-syntax ((leave (syntax-rules ()
((_ fmt args ...)
(begin
(format (current-error-port) fmt args ...)
(exit 1))))))
(define (parse-options)
;; Return the alist of option values.
(args-fold args %options
(lambda (opt name arg result)
(leave (_ "~A: unrecognized option") opt))
(lambda (arg result)
(alist-cons 'argument arg result))
%default-options))
(setlocale LC_ALL "")
(textdomain "guix")
(let* ((opts (parse-options))
(drv (filter-map (match-lambda
(('expression . exp)
(derivations-from-package-expressions exp))
(('argument . (? derivation-path? drv))
drv)
(('argument . (? string? x))
(match (find-packages-by-name x)
((p _ ...)
(package-derivation %store p))
(_
(leave (_ "~A: unknown package") x))))
(_ #f))
opts))
(req (append-map (lambda (drv-path)
(let ((d (call-with-input-file drv-path
read-derivation)))
(derivation-prerequisites-to-build %store d)))
drv))
(req* (delete-duplicates
(append (remove (compose (cut valid-path? %store <>)
derivation-path->output-path)
drv)
(map derivation-input-path req)))))
(if (assoc-ref opts 'dry-run?)
(format (current-error-port)
(N_ "~:[the following derivation would be built:~%~{ ~a~%~}~;~]"
"~:[the following derivations would be built:~%~{ ~a~%~}~;~]"
(length req*))
(null? req*) req*)
(format (current-error-port)
(N_ "~:[the following derivation will be built:~%~{ ~a~%~}~;~]"
"~:[the following derivations will be built:~%~{ ~a~%~}~;~]"
(length req*))
(null? req*) req*))
;; TODO: Add more options.
(set-build-options %store
#:keep-failed? (assoc-ref opts 'keep-failed?))
(or (assoc-ref opts 'dry-run?)
(and (build-derivations %store drv)
(for-each (lambda (d)
(display (derivation-path->output-path d))
(newline))
drv))))))
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