242 lines
9.3 KiB
Scheme
242 lines
9.3 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
|
;;; Copyright © 2014 David Thompson <davet@gnu.org>
|
|
;;; Copyright © 2015 Cyril Roelandt <tipecaml@gmail.com>
|
|
;;;
|
|
;;; 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 import pypi)
|
|
#:use-module (ice-9 binary-ports)
|
|
#:use-module (ice-9 match)
|
|
#:use-module (ice-9 pretty-print)
|
|
#:use-module (ice-9 regex)
|
|
#:use-module ((ice-9 rdelim) #:select (read-line))
|
|
#:use-module (srfi srfi-1)
|
|
#:use-module (srfi srfi-26)
|
|
#:use-module (rnrs bytevectors)
|
|
#:use-module (json)
|
|
#:use-module (web uri)
|
|
#:use-module (guix ui)
|
|
#:use-module (guix utils)
|
|
#:use-module (guix import utils)
|
|
#:use-module ((guix download) #:prefix download:)
|
|
#:use-module (guix import json)
|
|
#:use-module (guix packages)
|
|
#:use-module (guix upstream)
|
|
#:use-module (guix licenses)
|
|
#:use-module (guix build-system python)
|
|
#:use-module (gnu packages)
|
|
#:use-module (gnu packages python)
|
|
#:export (pypi->guix-package
|
|
%pypi-updater))
|
|
|
|
(define (pypi-fetch name)
|
|
"Return an alist representation of the PyPI metadata for the package NAME,
|
|
or #f on failure."
|
|
(json-fetch (string-append "https://pypi.python.org/pypi/" name "/json")))
|
|
|
|
(define (latest-source-release pypi-package)
|
|
"Return the latest source release for PYPI-PACKAGE."
|
|
(let ((releases (assoc-ref* pypi-package "releases"
|
|
(assoc-ref* pypi-package "info" "version"))))
|
|
(or (find (lambda (release)
|
|
(string=? "sdist" (assoc-ref release "packagetype")))
|
|
releases)
|
|
(error "No source release found for pypi package: "
|
|
(assoc-ref* pypi-package "info" "name")
|
|
(assoc-ref* pypi-package "info" "version")))))
|
|
|
|
(define (python->package-name name)
|
|
"Given the NAME of a package on PyPI, return a Guix-compliant name for the
|
|
package."
|
|
(if (string-prefix? "python-" name)
|
|
(snake-case name)
|
|
(string-append "python-" (snake-case name))))
|
|
|
|
(define (guix-package->pypi-name package)
|
|
"Given a Python PACKAGE built from pypi.python.org, return the name of the
|
|
package on PyPI."
|
|
(let ((source-url (and=> (package-source package) origin-uri)))
|
|
;; The URL has the form:
|
|
;; 'https://pypi.python.org/packages/source/' +
|
|
;; first letter of the package name +
|
|
;; '/' + package name + '/' + ...
|
|
(substring source-url 42 (string-rindex source-url #\/))))
|
|
|
|
(define (maybe-inputs package-inputs)
|
|
"Given a list of PACKAGE-INPUTS, tries to generate the 'inputs' field of a
|
|
package definition."
|
|
(match package-inputs
|
|
(()
|
|
'())
|
|
((package-inputs ...)
|
|
`((inputs (,'quasiquote ,package-inputs))))))
|
|
|
|
(define (guess-requirements source-url tarball)
|
|
"Given SOURCE-URL and a TARBALL of the package, return a list of the required
|
|
packages specified in the requirements.txt file. TARBALL will be extracted in
|
|
the current directory, and will be deleted."
|
|
|
|
(define (tarball-directory url)
|
|
;; Given the URL of the package's tarball, return the name of the directory
|
|
;; that will be created upon decompressing it. If the filetype is not
|
|
;; supported, return #f.
|
|
;; TODO: Support more archive formats.
|
|
(let ((basename (substring url (+ 1 (string-rindex url #\/)))))
|
|
(cond
|
|
((string-suffix? ".tar.gz" basename)
|
|
(string-drop-right basename 7))
|
|
((string-suffix? ".tar.bz2" basename)
|
|
(string-drop-right basename 8))
|
|
(else
|
|
(begin
|
|
(warning (_ "Unsupported archive format: \
|
|
cannot determine package dependencies"))
|
|
#f)))))
|
|
|
|
(define (clean-requirement s)
|
|
;; Given a requirement LINE, as can be found in a Python requirements.txt
|
|
;; file, remove everything other than the actual name of the required
|
|
;; package, and return it.
|
|
(string-take s
|
|
(or (string-index s #\space)
|
|
(string-length s))))
|
|
|
|
(define (comment? line)
|
|
;; Return #t if the given LINE is a comment, #f otherwise.
|
|
(eq? (string-ref (string-trim line) 0) #\#))
|
|
|
|
(define (read-requirements requirements-file)
|
|
;; Given REQUIREMENTS-FILE, a Python requirements.txt file, return a list
|
|
;; of name/variable pairs describing the requirements.
|
|
(call-with-input-file requirements-file
|
|
(lambda (port)
|
|
(let loop ((result '()))
|
|
(let ((line (read-line port)))
|
|
(if (eof-object? line)
|
|
result
|
|
(cond
|
|
((or (string-null? line) (comment? line))
|
|
(loop result))
|
|
(else
|
|
(loop (cons (python->package-name (clean-requirement line))
|
|
result))))))))))
|
|
|
|
(let ((dirname (tarball-directory source-url)))
|
|
(if (string? dirname)
|
|
(let* ((req-file (string-append dirname "/requirements.txt"))
|
|
(exit-code (system* "tar" "xf" tarball req-file)))
|
|
;; TODO: support more formats.
|
|
(if (zero? exit-code)
|
|
(dynamic-wind
|
|
(const #t)
|
|
(lambda ()
|
|
(read-requirements req-file))
|
|
(lambda ()
|
|
(delete-file req-file)
|
|
(rmdir dirname)))
|
|
(begin
|
|
(warning (_ "'tar xf' failed with exit code ~a\n")
|
|
exit-code)
|
|
'())))
|
|
'())))
|
|
|
|
(define (compute-inputs source-url tarball)
|
|
"Given the SOURCE-URL of an already downloaded TARBALL, return a list of
|
|
name/variable pairs describing the required inputs of this package."
|
|
(sort
|
|
(map (lambda (input)
|
|
(list input (list 'unquote (string->symbol input))))
|
|
(append '("python-setuptools")
|
|
;; Argparse has been part of Python since 2.7.
|
|
(remove (cut string=? "python-argparse" <>)
|
|
(guess-requirements source-url tarball))))
|
|
(lambda args
|
|
(match args
|
|
(((a _ ...) (b _ ...))
|
|
(string-ci<? a b))))))
|
|
|
|
(define (make-pypi-sexp name version source-url home-page synopsis
|
|
description license)
|
|
"Return the `package' s-expression for a python package with the given NAME,
|
|
VERSION, SOURCE-URL, HOME-PAGE, SYNOPSIS, DESCRIPTION, and LICENSE."
|
|
(call-with-temporary-output-file
|
|
(lambda (temp port)
|
|
(and (url-fetch source-url temp)
|
|
`(package
|
|
(name ,(python->package-name name))
|
|
(version ,version)
|
|
(source (origin
|
|
(method url-fetch)
|
|
(uri (pypi-uri ,name version))
|
|
(sha256
|
|
(base32
|
|
,(guix-hash-url temp)))))
|
|
(build-system python-build-system)
|
|
,@(maybe-inputs (compute-inputs source-url temp))
|
|
(home-page ,home-page)
|
|
(synopsis ,synopsis)
|
|
(description ,description)
|
|
(license ,(license->symbol license)))))))
|
|
|
|
(define (pypi->guix-package package-name)
|
|
"Fetch the metadata for PACKAGE-NAME from pypi.python.org, and return the
|
|
`package' s-expression corresponding to that package, or #f on failure."
|
|
(let ((package (pypi-fetch package-name)))
|
|
(and package
|
|
(let ((name (assoc-ref* package "info" "name"))
|
|
(version (assoc-ref* package "info" "version"))
|
|
(release (assoc-ref (latest-source-release package) "url"))
|
|
(synopsis (assoc-ref* package "info" "summary"))
|
|
(description (assoc-ref* package "info" "summary"))
|
|
(home-page (assoc-ref* package "info" "home_page"))
|
|
(license (string->license (assoc-ref* package "info" "license"))))
|
|
(make-pypi-sexp name version release home-page synopsis
|
|
description license)))))
|
|
|
|
(define (pypi-package? package)
|
|
"Return true if PACKAGE is a Python package from PyPI."
|
|
|
|
(define (pypi-url? url)
|
|
(string-prefix? "https://pypi.python.org/" url))
|
|
|
|
(let ((source-url (and=> (package-source package) origin-uri))
|
|
(fetch-method (and=> (package-source package) origin-method)))
|
|
(and (eq? fetch-method download:url-fetch)
|
|
(match source-url
|
|
((? string?)
|
|
(pypi-url? source-url))
|
|
((source-url ...)
|
|
(any pypi-url? source-url))))))
|
|
|
|
(define (latest-release guix-package)
|
|
"Return an <upstream-source> for the latest release of GUIX-PACKAGE."
|
|
(let* ((pypi-name (guix-package->pypi-name
|
|
(specification->package guix-package)))
|
|
(metadata (pypi-fetch pypi-name))
|
|
(version (assoc-ref* metadata "info" "version"))
|
|
(url (assoc-ref (latest-source-release metadata) "url")))
|
|
(upstream-source
|
|
(package guix-package)
|
|
(version version)
|
|
(urls (list url)))))
|
|
|
|
(define %pypi-updater
|
|
(upstream-updater
|
|
(name 'pypi)
|
|
(description "Updater for PyPI packages")
|
|
(pred pypi-package?)
|
|
(latest latest-release)))
|