guix/guix-build.in
Ludovic Courtès 912209ee61 guix-build: Error out when `-S' used for source-less package.
* guix-build.in (derivations-from-package-expressions): Leave with an
  error message when SOURCE? is #t and P has no source.

* tests/guix-build.sh: Add test.
2012-11-07 23:44:38 +01:00

276 lines
11 KiB
Scheme
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

#!/bin/sh
# aside from this initial boilerplate, this is actually -*- scheme -*- code
prefix="@prefix@"
datarootdir="@datarootdir@"
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 ui)
#:use-module (guix store)
#:use-module (guix derivations)
#:use-module (guix packages)
#:use-module (guix utils)
#:use-module (ice-9 format)
#:use-module (ice-9 match)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-26)
#:use-module (srfi srfi-34)
#:use-module (srfi srfi-37)
#:autoload (distro) (find-packages-by-name)
#:export (guix-build))
(define %store
(open-connection))
(define (derivations-from-package-expressions exp system source?)
"Eval EXP and return the corresponding derivation path for SYSTEM.
When SOURCE? is true, return the derivations of the package sources."
(let ((p (eval exp (current-module))))
(if (package? p)
(if source?
(let ((source (package-source p))
(loc (package-location p)))
(if source
(package-source-derivation %store source)
(leave (_ "~a:~a:~a: error: package `~a' has no source~%")
(location-file loc) (location-line loc)
(location-column loc) (package-name p))))
(package-derivation %store p system))
(leave (_ "expression `~s' does not evaluate to a package~%")
exp))))
;;;
;;; Command-line options.
;;;
(define %default-options
;; Alist of default option values.
`((system . ,(%current-system))
(substitutes? . #t)))
(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 (_ "
-S, --source build the packages' source derivations"))
(display (_ "
-s, --system=SYSTEM attempt to build for SYSTEM--e.g., \"i686-linux\""))
(display (_ "
-d, --derivations return the derivation paths of the given packages"))
(display (_ "
-K, --keep-failed keep build tree of failed builds"))
(display (_ "
-n, --dry-run do not build the derivations"))
(display (_ "
--no-substitutes build instead of resorting to pre-built substitutes"))
(display (_ "
-c, --cores=N allow the use of up to N CPU cores for the build"))
(display (_ "
-r, --root=FILE make FILE a symlink to the result, and register it
as a garbage collector root"))
(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-and-exit "guix-build")))
(option '(#\S "source") #f #f
(lambda (opt name arg result)
(alist-cons 'source? #t result)))
(option '(#\s "system") #t #f
(lambda (opt name arg result)
(alist-cons 'system arg
(alist-delete 'system result eq?))))
(option '(#\d "derivations") #f #f
(lambda (opt name arg result)
(alist-cons 'derivations-only? #t result)))
(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 '(#\c "cores") #t #f
(lambda (opt name arg result)
(let ((c (false-if-exception (string->number arg))))
(if c
(alist-cons 'cores c result)
(leave (_ "~a: not a number~%") arg)))))
(option '(#\n "dry-run") #f #f
(lambda (opt name arg result)
(alist-cons 'dry-run? #t result)))
(option '("no-substitutes") #f #f
(lambda (opt name arg result)
(alist-cons 'substitutes? #f
(alist-delete 'substitutes? result))))
(option '(#\r "root") #t #f
(lambda (opt name arg result)
(alist-cons 'gc-root arg result)))))
;;;
;;; Entry point.
;;;
(define (guix-build . args)
(define (parse-options)
;; Return the alist of option values.
(args-fold args %options
(lambda (opt name arg result)
(leave (_ "~A: unrecognized option~%") name))
(lambda (arg result)
(alist-cons 'argument arg result))
%default-options))
(define (register-root drv root)
;; Register ROOT as an indirect GC root for DRV's outputs.
(let* ((root (string-append (canonicalize-path (dirname root))
"/" root))
(drv* (call-with-input-file drv read-derivation))
(outputs (derivation-outputs drv*))
(outputs* (map (compose derivation-output-path cdr) outputs)))
(catch 'system-error
(lambda ()
(match outputs*
((output)
(symlink output root)
(add-indirect-root %store root))
((outputs ...)
(fold (lambda (output count)
(let ((root (string-append root "-" (number->string count))))
(symlink output root)
(add-indirect-root %store root))
(+ 1 count))
0
outputs))))
(lambda args
(format (current-error-port)
(_ "failed to create GC root `~a': ~a~%")
root (strerror (system-error-errno args)))
(exit 1)))))
(setlocale LC_ALL "")
(textdomain "guix")
(setvbuf (current-output-port) _IOLBF)
(setvbuf (current-error-port) _IOLBF)
(with-error-handling
(let* ((opts (parse-options))
(src? (assoc-ref opts 'source?))
(sys (assoc-ref opts 'system))
(drv (filter-map (match-lambda
(('expression . exp)
(derivations-from-package-expressions exp sys
src?))
(('argument . (? derivation-path? drv))
drv)
(('argument . (? string? x))
(match (find-packages-by-name x)
((p _ ...)
(if src?
(let ((s (package-source p)))
(package-source-derivation %store s))
(package-derivation %store p sys)))
(_
(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?)
#:build-cores (or (assoc-ref opts 'cores) 0)
#:use-substitutes? (assoc-ref opts 'substitutes?))
(if (assoc-ref opts 'derivations-only?)
(format #t "~{~a~%~}" drv)
(or (assoc-ref opts 'dry-run?)
(and (build-derivations %store drv)
(for-each (lambda (d)
(let ((drv (call-with-input-file d
read-derivation)))
(format #t "~{~a~%~}"
(map (match-lambda
((out-name . out)
(derivation-path->output-path
d out-name)))
(derivation-outputs drv)))))
drv)
(let ((roots (filter-map (match-lambda
(('gc-root . root)
root)
(_ #f))
opts)))
(when roots
(for-each (cut register-root <> <>)
drv roots)
#t))))))))
;; Local Variables:
;; eval: (put 'guard 'scheme-indent-function 1)
;; End: