274 lines
11 KiB
Scheme
274 lines
11 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2012, 2013 Ludovic Courtès <ludo@gnu.org>
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;;; Copyright © 2013 Mark H Weaver <mhw@netris.org>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (guix scripts build)
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#:use-module (guix ui)
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#:use-module (guix store)
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#:use-module (guix derivations)
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#:use-module (guix packages)
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#:use-module (guix utils)
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#:use-module (ice-9 format)
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#:use-module (ice-9 match)
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#:use-module (ice-9 vlist)
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#:use-module (srfi srfi-1)
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#:use-module (srfi srfi-11)
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#:use-module (srfi srfi-26)
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#:use-module (srfi srfi-34)
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#:use-module (srfi srfi-37)
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#:autoload (gnu packages) (find-packages-by-name
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find-newest-available-packages)
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#:export (guix-build))
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(define %store
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(make-parameter #f))
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(define (derivations-from-package-expressions str system source?)
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"Read/eval STR and return the corresponding derivation path for SYSTEM.
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When SOURCE? is true, return the derivations of the package sources."
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(let ((p (read/eval-package-expression str)))
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(if source?
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(let ((source (package-source p))
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(loc (package-location p)))
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(if source
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(package-source-derivation (%store) source)
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(leave (_ "~a: error: package `~a' has no source~%")
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(location->string loc) (package-name p))))
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(package-derivation (%store) p system))))
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;;;
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;;; Command-line options.
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;;;
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(define %default-options
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;; Alist of default option values.
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`((system . ,(%current-system))
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(substitutes? . #t)
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(verbosity . 0)))
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(define (show-help)
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(display (_ "Usage: guix build [OPTION]... PACKAGE-OR-DERIVATION...
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Build the given PACKAGE-OR-DERIVATION and return their output paths.\n"))
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(display (_ "
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-e, --expression=EXPR build the package EXPR evaluates to"))
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(display (_ "
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-S, --source build the packages' source derivations"))
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(display (_ "
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-s, --system=SYSTEM attempt to build for SYSTEM--e.g., \"i686-linux\""))
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(display (_ "
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-d, --derivations return the derivation paths of the given packages"))
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(display (_ "
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-K, --keep-failed keep build tree of failed builds"))
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(display (_ "
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-n, --dry-run do not build the derivations"))
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(display (_ "
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--no-substitutes build instead of resorting to pre-built substitutes"))
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(display (_ "
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-c, --cores=N allow the use of up to N CPU cores for the build"))
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(display (_ "
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-r, --root=FILE make FILE a symlink to the result, and register it
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as a garbage collector root"))
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(display (_ "
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--verbosity=LEVEL use the given verbosity LEVEL"))
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(newline)
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(display (_ "
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-h, --help display this help and exit"))
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(display (_ "
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-V, --version display version information and exit"))
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(newline)
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(show-bug-report-information))
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(define %options
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;; Specifications of the command-line options.
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(list (option '(#\h "help") #f #f
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(lambda args
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(show-help)
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(exit 0)))
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(option '(#\V "version") #f #f
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(lambda args
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(show-version-and-exit "guix build")))
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(option '(#\S "source") #f #f
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(lambda (opt name arg result)
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(alist-cons 'source? #t result)))
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(option '(#\s "system") #t #f
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(lambda (opt name arg result)
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(alist-cons 'system arg
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(alist-delete 'system result eq?))))
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(option '(#\d "derivations") #f #f
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(lambda (opt name arg result)
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(alist-cons 'derivations-only? #t result)))
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(option '(#\e "expression") #t #f
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(lambda (opt name arg result)
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(alist-cons 'expression arg result)))
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(option '(#\K "keep-failed") #f #f
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(lambda (opt name arg result)
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(alist-cons 'keep-failed? #t result)))
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(option '(#\c "cores") #t #f
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(lambda (opt name arg result)
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(let ((c (false-if-exception (string->number arg))))
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(if c
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(alist-cons 'cores c result)
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(leave (_ "~a: not a number~%") arg)))))
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(option '(#\n "dry-run") #f #f
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(lambda (opt name arg result)
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(alist-cons 'dry-run? #t result)))
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(option '("no-substitutes") #f #f
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(lambda (opt name arg result)
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(alist-cons 'substitutes? #f
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(alist-delete 'substitutes? result))))
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(option '(#\r "root") #t #f
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(lambda (opt name arg result)
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(alist-cons 'gc-root arg result)))
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(option '("verbosity") #t #f
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(lambda (opt name arg result)
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(let ((level (string->number arg)))
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(alist-cons 'verbosity level
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(alist-delete 'verbosity result)))))))
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;;;
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;;; Entry point.
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;;;
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(define (guix-build . args)
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(define (parse-options)
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;; Return the alist of option values.
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(args-fold args %options
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(lambda (opt name arg result)
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(leave (_ "~A: unrecognized option~%") name))
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(lambda (arg result)
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(alist-cons 'argument arg result))
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%default-options))
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(define (register-root paths root)
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;; Register ROOT as an indirect GC root for all of PATHS.
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(let* ((root (string-append (canonicalize-path (dirname root))
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"/" root)))
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(catch 'system-error
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(lambda ()
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(match paths
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((path)
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(symlink path root)
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(add-indirect-root (%store) root))
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((paths ...)
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(fold (lambda (path count)
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(let ((root (string-append root "-" (number->string count))))
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(symlink path root)
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(add-indirect-root (%store) root))
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(+ 1 count))
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0
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paths))))
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(lambda args
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(leave (_ "failed to create GC root `~a': ~a~%")
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root (strerror (system-error-errno args)))
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(exit 1)))))
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(define newest-available-packages
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(memoize find-newest-available-packages))
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(define (find-best-packages-by-name name version)
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(if version
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(find-packages-by-name name version)
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(match (vhash-assoc name (newest-available-packages))
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((_ version pkgs ...) pkgs)
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(#f '()))))
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(define (find-package request)
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;; Return a package matching REQUEST. REQUEST may be a package
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;; name, or a package name followed by a hyphen and a version
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;; number. If the version number is not present, return the
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;; preferred newest version.
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(let-values (((name version)
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(package-name->name+version request)))
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(match (find-best-packages-by-name name version)
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((p) ; one match
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p)
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((p x ...) ; several matches
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(warning (_ "ambiguous package specification `~a'~%") request)
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(warning (_ "choosing ~a from ~a~%")
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(package-full-name p)
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(location->string (package-location p)))
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p)
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(_ ; no matches
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(if version
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(leave (_ "~A: package not found for version ~a~%")
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name version)
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(leave (_ "~A: unknown package~%") name))))))
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(with-error-handling
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(let ((opts (parse-options)))
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(parameterize ((%store (open-connection)))
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(let* ((src? (assoc-ref opts 'source?))
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(sys (assoc-ref opts 'system))
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(drv (filter-map (match-lambda
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(('expression . str)
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(derivations-from-package-expressions str sys
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src?))
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(('argument . (? derivation-path? drv))
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drv)
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(('argument . (? string? x))
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(let ((p (find-package x)))
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(if src?
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(let ((s (package-source p)))
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(package-source-derivation
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(%store) s))
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(package-derivation (%store) p sys))))
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(_ #f))
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opts))
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(roots (filter-map (match-lambda
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(('gc-root . root) root)
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(_ #f))
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opts)))
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(show-what-to-build (%store) drv
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#:use-substitutes? (assoc-ref opts 'substitutes?)
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#:dry-run? (assoc-ref opts 'dry-run?))
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;; TODO: Add more options.
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(set-build-options (%store)
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#:keep-failed? (assoc-ref opts 'keep-failed?)
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#:build-cores (or (assoc-ref opts 'cores) 0)
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#:use-substitutes? (assoc-ref opts 'substitutes?)
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#:verbosity (assoc-ref opts 'verbosity))
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(if (assoc-ref opts 'derivations-only?)
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(begin
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(format #t "~{~a~%~}" drv)
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(for-each (cut register-root <> <>)
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(map list drv) roots))
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(or (assoc-ref opts 'dry-run?)
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(and (build-derivations (%store) drv)
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(for-each (lambda (d)
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(let ((drv (call-with-input-file d
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read-derivation)))
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(format #t "~{~a~%~}"
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(map (match-lambda
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((out-name . out)
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(derivation-path->output-path
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d out-name)))
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(derivation-outputs drv)))))
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drv)
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(for-each (cut register-root <> <>)
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(map (lambda (drv)
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(map cdr
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(derivation-path->output-paths drv)))
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drv)
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roots)))))))))
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