guix-devel/guix/gnu-maintenance.scm

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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2010, 2011, 2012, 2013 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2012, 2013 Nikita Karetnikov <nikita@karetnikov.org>
;;;
;;; 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 gnu-maintenance)
#:use-module (web uri)
#:use-module (web client)
#:use-module (web response)
#:use-module (ice-9 regex)
#:use-module (ice-9 rdelim)
#:use-module (ice-9 match)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-11)
#:use-module (srfi srfi-26)
#:use-module (system foreign)
#:use-module (guix ftp-client)
#:use-module (guix utils)
#:use-module (guix packages)
#:export (gnu-package-name
gnu-package-mundane-name
gnu-package-copyright-holder
gnu-package-savannah
gnu-package-fsd
gnu-package-language
gnu-package-logo
gnu-package-doc-category
gnu-package-doc-summary
gnu-package-doc-urls
gnu-package-download-url
official-gnu-packages
find-packages
gnu-package?
releases
latest-release
gnu-package-name->name+version))
;;; Commentary:
;;;
;;; Code for dealing with the maintenance of GNU packages, such as
;;; auto-updates.
;;;
;;; Code:
;;;
;;; List of GNU packages.
;;;
(define (http-fetch uri)
"Return an input port containing the textual data at URI, a string."
(let*-values (((resp data)
(let ((uri (string->uri uri)))
;; Try hard to use the API du jour to get an input port.
(if (version>? "2.0.7" (version))
(if (defined? 'http-get*)
(http-get* uri)
(http-get uri)) ; old Guile, returns a string
(http-get uri #:streaming? #t)))) ; 2.0.8 or later
((code)
(response-code resp)))
(case code
((200)
(cond ((not data)
(begin
;; XXX: Guile 2.0.5 and earlier did not support chunked transfer
;; encoding, which is required when fetching %PACKAGE-LIST-URL
;; (see <http://lists.gnu.org/archive/html/guile-devel/2011-09/msg00089.html>).
;; Since users may still be using these versions, warn them and
;; bail out.
(format (current-error-port)
"warning: using Guile ~a, ~a ~s encoding~%"
(version)
"which does not support HTTP"
(response-transfer-encoding resp))
(error "download failed; use a newer Guile"
uri resp)))
((string? data) ; old `http-get' returns a string
(open-input-string data))
(else ; input port
data)))
(else
(error "download failed" uri code
(response-reason-phrase resp))))))
(define %package-list-url
(string-append "http://cvs.savannah.gnu.org/"
"viewvc/*checkout*/gnumaint/"
"gnupackages.txt?root=womb"))
(define-record-type* <gnu-package-descriptor>
gnu-package-descriptor
make-gnu-package-descriptor
gnu-package-descriptor?
(name gnu-package-name)
(mundane-name gnu-package-mundane-name)
(copyright-holder gnu-package-copyright-holder)
(savannah gnu-package-savannah)
(fsd gnu-package-fsd)
(language gnu-package-language)
(logo gnu-package-logo)
(doc-category gnu-package-doc-category)
(doc-summary gnu-package-doc-summary)
(doc-urls gnu-package-doc-urls)
(download-url gnu-package-download-url))
(define (official-gnu-packages)
"Return a list of records, which are GNU packages."
(define (group-package-fields port state)
;; Return a list of alists. Each alist contains fields of a GNU
;; package.
(let ((line (read-line port))
(field-rx (make-regexp "^([[:graph:]]+): (.*)$"))
(doc-urls-rx (make-regexp "^doc-url: (.*)$"))
(end-rx (make-regexp "^# End. .+Do not remove this line.+")))
(define (match-field str)
;; Packages are separated by empty strings. If STR is an
;; empty string, create a new list to store fields of a
;; different package. Otherwise, match and create a key-value
;; pair.
(match str
(""
(group-package-fields port (cons '() state)))
(str
(cond ((regexp-exec doc-urls-rx str)
=>
(lambda (match)
(if (equal? (assoc-ref (first state) "doc-urls") #f)
(group-package-fields
port (cons (cons (cons "doc-urls"
(list
(match:substring match 1)))
(first state))
(drop state 1)))
(group-package-fields
port (cons (cons (cons "doc-urls"
(cons (match:substring match 1)
(assoc-ref (first state)
"doc-urls")))
(assoc-remove! (first state)
"doc-urls"))
(drop state 1))))))
((regexp-exec field-rx str)
=>
(lambda (match)
(group-package-fields
port (cons (cons (cons (match:substring match 1)
(match:substring match 2))
(first state))
(drop state 1)))))
(else (group-package-fields port state))))))
(if (or (eof-object? line)
(regexp-exec end-rx line)) ; don't include dummy fields
(remove null-list? state)
(match-field line))))
(define (alist->record alist make keys)
;; Apply MAKE, which should be a syntactic constructor, to the
;; values associated with KEYS in ALIST.
(let ((args (map (cut assoc-ref alist <>) keys)))
(apply make args)))
(reverse
(map (lambda (alist)
(alist->record alist
make-gnu-package-descriptor
(list "package" "mundane-name" "copyright-holder"
"savannah" "fsd" "language" "logo"
"doc-category" "doc-summary" "doc-urls"
"download-url")))
(group-package-fields (http-fetch %package-list-url)
'(())))))
(define (find-packages regexp)
"Find GNU packages which satisfy REGEXP."
(let ((name-rx (make-regexp regexp)))
(filter (lambda (package)
(false-if-exception
(regexp-exec name-rx (gnu-package-name package))))
(official-gnu-packages))))
(define gnu-package?
(memoize
(lambda (package)
"Return true if PACKAGE is a GNU package. This procedure may access the
network to check in GNU's database."
;; TODO: Find a way to determine that a package is non-GNU without going
;; through the network.
(let ((url (and=> (package-source package) origin-uri))
(name (package-name package)))
(or (and (string? url) (string-prefix? "mirror://gnu" url))
(and (member name (map gnu-package-name (official-gnu-packages)))
#t))))))
;;;
;;; Latest release.
;;;
(define (ftp-server/directory project)
"Return the FTP server and directory where PROJECT's tarball are
stored."
(define quirks
'(("commoncpp2" "ftp.gnu.org" "/gnu/commoncpp")
("ucommon" "ftp.gnu.org" "/gnu/commoncpp")
("libzrtpcpp" "ftp.gnu.org" "/gnu/ccrtp")
("libosip2" "ftp.gnu.org" "/gnu/osip")
("libgcrypt" "ftp.gnupg.org" "/gcrypt/libgcrypt")
("libgpg-error" "ftp.gnupg.org" "/gcrypt/libgpg-error")
("libassuan" "ftp.gnupg.org" "/gcrypt/libassuan")
("gnupg" "ftp.gnupg.org" "/gcrypt/gnupg")
("freefont-ttf" "ftp.gnu.org" "/gnu/freefont")
("gnu-ghostscript" "ftp.gnu.org" "/gnu/ghostscript")
("mit-scheme" "ftp.gnu.org" "/gnu/mit-scheme/stable.pkg")
("icecat" "ftp.gnu.org" "/gnu/gnuzilla")
("source-highlight" "ftp.gnu.org" "/gnu/src-highlite")
("TeXmacs" "ftp.texmacs.org" "/TeXmacs/targz")))
(match (assoc project quirks)
((_ server directory)
(values server directory))
(_
(values "ftp.gnu.org" (string-append "/gnu/" project)))))
(define (releases project)
"Return the list of releases of PROJECT as a list of release name/directory
pairs. Example: (\"mit-scheme-9.0.1\" . \"/gnu/mit-scheme/stable.pkg/9.0.1\"). "
;; TODO: Parse something like fencepost.gnu.org:/gd/gnuorg/packages-ftp.
(define release-rx
(make-regexp (string-append "^" project
"-([0-9]|[^-])*(-src)?\\.tar\\.")))
(define alpha-rx
(make-regexp "^.*-.*[0-9](-|~)?(alpha|beta|rc|cvs|svn|git)-?[0-9\\.]*\\.tar\\."))
(define (sans-extension tarball)
(let ((end (string-contains tarball ".tar")))
(substring tarball 0 end)))
(define (release-file file)
;; Return #f if FILE is not a release tarball, otherwise return
;; PACKAGE-VERSION.
(and (not (string-suffix? ".sig" file))
(regexp-exec release-rx file)
(not (regexp-exec alpha-rx file))
(let ((s (sans-extension file)))
(and (regexp-exec %package-name-rx s) s))))
(let-values (((server directory) (ftp-server/directory project)))
(define conn (ftp-open server))
(let loop ((directories (list directory))
(result '()))
(match directories
(()
(ftp-close conn)
result)
((directory rest ...)
(let* ((files (ftp-list conn directory))
(subdirs (filter-map (match-lambda
((name 'directory . _) name)
(_ #f))
files)))
(loop (append (map (cut string-append directory "/" <>)
subdirs)
rest)
(append
;; Filter out signatures, deltas, and files which
;; are potentially not releases of PROJECT--e.g.,
;; in /gnu/guile, filter out guile-oops and
;; guile-www; in mit-scheme, filter out binaries.
(filter-map (match-lambda
((file 'file . _)
(and=> (release-file file)
(cut cons <> directory)))
(_ #f))
files)
result))))))))
(define (latest-release project)
"Return (\"FOO-X.Y\" . \"/bar/foo\") or #f."
(let ((releases (releases project)))
(and (not (null? releases))
(fold (lambda (release latest)
(if (version>? (car release) (car latest))
release
latest))
'("" . "")
releases))))
(define %package-name-rx
;; Regexp for a package name, e.g., "foo-X.Y". Since TeXmacs uses
;; "TeXmacs-X.Y-src", the `-src' suffix is allowed.
(make-regexp "^(.*)-(([0-9]|\\.)+)(-src)?"))
(define (gnu-package-name->name+version name+version)
"Return the package name and version number extracted from NAME+VERSION."
(let ((match (regexp-exec %package-name-rx name+version)))
(if (not match)
(values name+version #f)
(values (match:substring match 1) (match:substring match 2)))))
;;; gnu-maintenance.scm ends here