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Add (guix download) and (guix build download).

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* guix/download.scm, guix/build/download.scm: New files.
* Makefile.am (MODULES): Add them.
* tests/builders.scm ("url-fetch"): New test.
* distro/packages/bootstrap.scm (bootstrap-origin): Support
  `url-fetch'.
* guix/snix.scm (snix-derivation->guix-package): Use `url-fetch' instead
  of `http-fetch'.
This commit is contained in:
Ludovic Courtès 2012-11-12 23:10:26 +01:00
parent ddc29a782e
commit 62cab99c32
6 changed files with 248 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
Makefile.am
View file

@ -26,6 +26,7 @@ MODULES = \
guix/base32.scm \
guix/utils.scm \
guix/derivations.scm \
guix/download.scm \
guix/build-system.scm \
guix/build-system/gnu.scm \
guix/build-system/trivial.scm \
@ -34,6 +35,7 @@ MODULES = \
guix/http.scm \
guix/store.scm \
guix/ui.scm \
guix/build/download.scm \
guix/build/gnu-build-system.scm \
guix/build/ftp.scm \
guix/build/http.scm \

3
distro/packages/bootstrap.scm
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@ -21,6 +21,7 @@
#:use-module (guix packages)
#:use-module (guix ftp)
#:use-module (guix http)
#:use-module (guix download)
#:use-module (guix build-system)
#:use-module (guix build-system gnu)
#:use-module (guix build-system trivial)
@ -70,6 +71,8 @@
(boot http-fetch))
((eq? orig-method ftp-fetch)
(boot ftp-fetch))
((eq? orig-method url-fetch)
(boot url-fetch))
(else orig-method))))))
(define (package-from-tarball name* source* program-to-test description*)

157
guix/build/download.scm Normal file
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@ -0,0 +1,157 @@
;;; 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 download)
#:use-module (web uri)
#:use-module (web client)
#:use-module (web response)
#:use-module (guix ftp-client)
#:use-module (guix build utils)
#:use-module (rnrs io ports)
#:use-module (srfi srfi-11)
#:use-module (ice-9 match)
#:export (url-fetch))
;;; Commentary:
;;;
;;; Fetch data such as tarballs over HTTP or FTP (builder-side code).
;;;
;;; Code:
(define (ftp-fetch uri file)
"Fetch data from URI and write it to FILE. Return FILE on success."
(let* ((conn (ftp-open (uri-host uri)))
(in (ftp-retr conn (basename (uri-path uri))
(dirname (uri-path uri)))))
(call-with-output-file file
(lambda (out)
;; TODO: Show a progress bar.
(dump-port in out)))
(ftp-close conn))
file)
(define (open-connection-for-uri uri)
"Return an open input/output port for a connection to URI.
This is the same as Guile's `open-socket-for-uri', except that we always
use a numeric port argument, to avoid the need to go through libc's NSS,
which is not available during bootstrap."
(define addresses
(let ((port (or (uri-port uri)
(case (uri-scheme uri)
((http) 80) ; /etc/services, not for me!
(else
(error "unsupported URI scheme" uri))))))
(getaddrinfo (uri-host uri)
(number->string port)
AI_NUMERICSERV)))
(let loop ((addresses addresses))
(let* ((ai (car addresses))
(s (with-fluids ((%default-port-encoding #f))
(socket (addrinfo:fam ai) (addrinfo:socktype ai)
(addrinfo:protocol ai)))))
(catch 'system-error
(lambda ()
(connect s (addrinfo:addr ai))
;; Buffer input and output on this port.
(setvbuf s _IOFBF)
;; Enlarge the receive buffer.
(setsockopt s SOL_SOCKET SO_RCVBUF (* 12 1024))
s)
(lambda args
;; Connection failed, so try one of the other addresses.
(close s)
(if (null? addresses)
(apply throw args)
(loop (cdr addresses))))))))
;; XXX: This is an awful hack to make sure the (set-port-encoding! p
;; "ISO-8859-1") call in `read-response' passes, even during bootstrap
;; where iconv is not available.
(module-define! (resolve-module '(web response))
'set-port-encoding!
(lambda (p e) #f))
(define (http-fetch uri file)
"Fetch data from URI and write it to FILE. Return FILE on success."
;; FIXME: Use a variant of `http-get' that returns a port instead of
;; loading everything in memory.
(let*-values (((connection)
(open-connection-for-uri uri))
((resp bv)
(http-get uri #:port connection #:decode-body? #f))
((code)
(response-code resp)))
(if (= 200 code)
(begin
(call-with-output-file file
(lambda (p)
(put-bytevector p bv)))
file)
(error "download failed" (uri->string uri)
code (response-reason-phrase resp)))))
(define-syntax-rule (false-if-exception* body ...)
"Like `false-if-exception', but print the exception on the error port."
(catch #t
(lambda ()
body ...)
(lambda (key . args)
#f)
(lambda (key . args)
(print-exception (current-error-port) #f key args))))
(define (url-fetch url file)
"Fetch FILE from URL; URL may be either a single string, or a list of
string denoting alternate URLs for FILE. Return #f on failure, and FILE
on success."
(define uri
(match url
((_ ...) (map string->uri url))
(_ (list (string->uri url)))))
(define (fetch uri file)
(format #t "starting download of `~a' from `~a'...~%"
file (uri->string uri))
(case (uri-scheme uri)
((http) (false-if-exception* (http-fetch uri file)))
((ftp) (false-if-exception* (ftp-fetch uri file)))
(else
(format #t "skipping URI with unsupported scheme: ~s~%"
uri)
#f)))
(setvbuf (current-output-port) _IOLBF)
(setvbuf (current-error-port) _IOLBF)
(let try ((uri uri))
(match uri
((uri tail ...)
(or (fetch uri file)
(try tail)))
(()
(format (current-error-port) "failed to download ~s from ~s~%"
file url)
#f))))
;;; download.scm ends here

73
guix/download.scm Normal file
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@ -0,0 +1,73 @@
;;; 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 download)
#:use-module (ice-9 match)
#:use-module (guix derivations)
#:use-module (guix packages)
#:use-module ((guix store) #:select (derivation-path?))
#:use-module (guix utils)
#:export (url-fetch))
;;; Commentary:
;;;
;;; Produce fixed-output derivations with data fetched over HTTP or FTP.
;;;
;;; Code:
(define* (url-fetch store url hash-algo hash
#:optional name
#:key (system (%current-system)) guile)
"Return the path of a fixed-output derivation in STORE that fetches
URL (a string, or a list of strings denoting alternate URLs), which is
expected to have hash HASH of type HASH-ALGO (a symbol). By default,
the file name is the base name of URL; optionally, NAME can specify a
different file name."
(define builder
`(begin
(use-modules (guix build download))
(url-fetch ',url %output)))
(define guile-for-build
(match guile
((? package?)
(package-derivation store guile system))
((and (? string?) (? derivation-path?))
guile)
(#f ; the default
(let* ((distro (resolve-interface '(distro packages base)))
(guile (module-ref distro 'guile-final)))
(package-derivation store guile system)))))
(define file-name
(match url
((head _ ...)
(basename head))
(_
(basename url))))
(build-expression->derivation store (or name file-name) system
builder '()
#:hash-algo hash-algo
#:hash hash
#:modules '((guix build download)
(guix build utils)
(guix ftp-client))
#:guile-for-build guile-for-build))
;;; download.scm ends here

2
guix/snix.scm
View file

@ -400,7 +400,7 @@ location of DERIVATION."
(name ,name)
(version ,version)
(source (origin
(method http-fetch)
(method url-fetch)
(uri ,(pretty-uri (car urls) version))
(sha256
(base32

12
tests/builders.scm
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@ -19,6 +19,7 @@
(define-module (test-builders)
#:use-module (guix http)
#:use-module (guix download)
#:use-module (guix build-system)
#:use-module (guix build-system gnu)
#:use-module (guix store)
@ -63,6 +64,17 @@
(file-exists? out-path)
(valid-path? %store out-path))))
(test-assert "url-fetch"
(let* ((url '("http://ftp.gnu.org/gnu/hello/hello-2.8.tar.gz"
"ftp://ftp.gnu.org/gnu/hello/hello-2.8.tar.gz"))
(hash (nix-base32-string->bytevector
"0wqd8sjmxfskrflaxywc7gqw7sfawrfvdxd9skxawzfgyy0pzdz6"))
(drv-path (url-fetch %store url 'sha256 hash))
(out-path (derivation-path->output-path drv-path)))
(and (build-derivations %store (list drv-path))
(file-exists? out-path)
(valid-path? %store out-path))))
(test-assert "gnu-build-system"
(and (build-system? gnu-build-system)
(eq? gnu-build (build-system-builder gnu-build-system))))