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import: Add PyPI importer. 

* guix/snix.scm: Delete.
* guix/import/snix.scm: New file.
* guix/import/pypi.scm: New file.
* guix/import/utils.scm: New file.
* guix/scripts/import/nix.scm: New file.
* guix/scripts/import/pypi.scm: New file.
* tests/pypi.scm: New file.
* tests/snix.scm: Import (guix import snix) module.
* guix/scripts/import.scm (%default-options, %options): Delete.
  (%standard-import-options, importers): New variables.
  (show-help): List importers.
  (guix-import): Factor out Nix-specific logic.  Delegate to correct importer
  based upon first argument.
* configure.ac (HAVE_GUILE_JSON): New conditional.
* Makefile.am (MODULES): Add new files and remove 'guix/snix.scm'.
  (SCM_TESTS): Add 'tests/pypi.scm' if guile-json is installed.
This commit is contained in:
David Thompson 2014-09-27 10:16:23 -04:00
parent 2efb3ddaa4
commit 1b3e968512
10 changed files with 552 additions and 78 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
Makefile.am
View File

@ -75,7 +75,9 @@ MODULES = \
guix/build/syscalls.scm \
guix/build/emacs-utils.scm \
guix/packages.scm \
guix/snix.scm \
guix/import/utils.scm \
guix/import/snix.scm \
guix/import/pypi.scm \
guix/scripts/download.scm \
guix/scripts/build.scm \
guix/scripts/archive.scm \
@ -89,6 +91,8 @@ MODULES = \
guix/scripts/refresh.scm \
guix/scripts/system.scm \
guix/scripts/lint.scm \
guix/scripts/import/nix.scm \
guix/scripts/import/pypi.scm \
guix.scm \
$(GNU_SYSTEM_MODULES)
@ -162,6 +166,12 @@ SCM_TESTS = \
tests/syscalls.scm \
tests/lint.scm
if HAVE_GUILE_JSON
SCM_TESTS += tests/pypi.scm
endif
SH_TESTS = \
tests/guix-build.sh \
tests/guix-download.sh \

4
configure.ac
View File

@ -61,6 +61,10 @@ if test "x$GUILD" = "x"; then
AC_MSG_ERROR(['guild' binary not found; please check your guile-2.x installation.])
fi
dnl guile-json is used for the PyPI package importer
GUILE_MODULE_AVAILABLE([have_guile_json], [(json)])
AM_CONDITIONAL([HAVE_GUILE_JSON], [test "x$have_guile_json" = "xyes"])
dnl Make sure we have a full-fledged Guile.
GUIX_ASSERT_GUILE_FEATURES([regex posix socket net-db threads])

169
guix/import/pypi.scm Normal file
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@ -0,0 +1,169 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2014 David Thompson <davet@gnu.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 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 (srfi srfi-1)
#:use-module (rnrs bytevectors)
#:use-module (json)
#:use-module (web uri)
#:use-module (guix utils)
#:use-module (guix import utils)
#:use-module (guix base32)
#:use-module (guix hash)
#:use-module (guix packages)
#:use-module (guix licenses)
#:use-module (guix build-system python)
#:use-module ((guix build download) #:prefix build:)
#:use-module (gnu packages python)
#:export (pypi->guix-package))
(define (hash-table->alist table)
"Return an alist represenation of TABLE."
(map (match-lambda
((key . (lst ...))
(cons key
(map (lambda (x)
(if (hash-table? x)
(hash-table->alist x)
x))
lst)))
((key . (? hash-table? table))
(cons key (hash-table->alist table)))
(pair pair))
(hash-map->list cons table)))
(define (flatten lst)
"Return a list that recursively concatenates all sub-lists of LIST."
(fold-right
(match-lambda*
(((sub-list ...) memo)
(append (flatten sub-list) memo))
((elem memo)
(cons elem memo)))
'() lst))
(define (join lst delimiter)
"Return a list that contains the elements of LST, each separated by
DELIMETER."
(match lst
(() '())
((elem)
(list elem))
((elem . rest)
(cons* elem delimiter (join rest delimiter)))))
(define (assoc-ref* alist key . rest)
"Return the value for KEY from ALIST. For each additional key specified,
recursively apply the procedure to the sub-list."
(if (null? rest)
(assoc-ref alist key)
(apply assoc-ref* (assoc-ref alist key) rest)))
(define string->license
(match-lambda
("GNU LGPL" lgpl2.0)
("GPL" gpl3)
((or "BSD" "BSD License") bsd-3)
((or "MIT" "MIT license" "Expat license") expat)
("Public domain" public-domain)
(_ #f)))
(define (url-fetch url file-name)
"Save the contents of URL to FILE-NAME."
(parameterize ((current-output-port (current-error-port)))
(build:url-fetch url file-name)))
(define (json-fetch url)
"Return an alist representation of the JSON resource URL."
(call-with-temporary-output-file
(lambda (temp port)
(and (url-fetch url temp)
(hash-table->alist
(call-with-input-file temp json->scm))))))
(define (pypi-fetch name)
"Return an alist representation of the PyPI metadata for the package NAME."
(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 (snake-case str)
"Return a downcased version of the string STR where dashes are replaced with
underscores."
(string-join (string-split (string-downcase str) #\_) "-"))
(define (guix-hash-url url)
"Download the resource at URL and return the hash in nix-base32 format."
(call-with-temporary-output-file
(lambda (temp port)
(and (url-fetch url temp)
(bytevector->nix-base32-string
(call-with-input-file temp port-sha256))))))
(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."
`(package
(name ,(string-append "python-" (snake-case name)))
(version ,version)
(source (origin
(method url-fetch)
(uri (string-append ,@(factorize-uri source-url version)))
(sha256
(base32
,(guix-hash-url source-url)))))
(build-system python-build-system)
(inputs
`(("python-setuptools" ,python-setuptools)))
(home-page ,home-page)
(synopsis ,synopsis)
(description ,description)
(license ,(assoc-ref `((,lgpl2.0 . lgpl2.0)
(,gpl3 . gpl3)
(,bsd-3 . bsd-3)
(,expat . expat)
(,public-domain . public-domain))
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."
(let ((package (pypi-fetch package-name)))
(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))))

31
guix/snix.scm → guix/import/snix.scm
View File

@ -16,7 +16,7 @@
;;; 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 snix)
(define-module (guix import snix)
#:use-module (sxml ssax)
#:use-module (ice-9 popen)
#:use-module (ice-9 match)
@ -32,6 +32,7 @@
#:use-module (system foreign)
#:use-module (rnrs bytevectors)
#:use-module (guix utils)
#:use-module (guix import utils)
#:use-module (guix base32)
#:use-module (guix config)
#:use-module (guix gnu-maintenance)
@ -318,34 +319,6 @@ attributes, or #f if NAME cannot be found."
;;; Conversion of "Nix expressions" to "Guix expressions".
;;;
(define (factorize-uri uri version)
"Factorize URI, a package tarball URI as a string, such that any occurrences
of the string VERSION is replaced by the symbol 'version."
(let ((version-rx (make-regexp (regexp-quote version))))
(match (regexp-exec version-rx uri)
(#f
uri)
(_
(let ((indices (fold-matches version-rx uri
'((0))
(lambda (m result)
(match result
(((start) rest ...)
`((,(match:end m))
(,start . ,(match:start m))
,@rest)))))))
(fold (lambda (index result)
(match index
((start)
(cons (substring uri start)
result))
((start . end)
(cons* (substring uri start end)
'version
result))))
'()
indices))))))
(define (snix-derivation->guix-package derivation)
"Return the `package' s-expression corresponding to SNix DERIVATION, a
Nixpkgs `stdenv.mkDerivation'-style derivation, and the original source

51
guix/import/utils.scm Normal file
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@ -0,0 +1,51 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012, 2013 Ludovic Courtès <ludo@gnu.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 import utils)
#:use-module (ice-9 match)
#:use-module (ice-9 regex)
#:use-module (srfi srfi-1)
#:export (factorize-uri))
(define (factorize-uri uri version)
"Factorize URI, a package tarball URI as a string, such that any occurrences
of the string VERSION is replaced by the symbol 'version."
(let ((version-rx (make-regexp (regexp-quote version))))
(match (regexp-exec version-rx uri)
(#f
uri)
(_
(let ((indices (fold-matches version-rx uri
'((0))
(lambda (m result)
(match result
(((start) rest ...)
`((,(match:end m))
(,start . ,(match:start m))
,@rest)))))))
(fold (lambda (index result)
(match index
((start)
(cons (substring uri start)
result))
((start . end)
(cons* (substring uri start end)
'version
result))))
'()
indices))))))

83
guix/scripts/import.scm
View File

@ -1,5 +1,6 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012, 2013 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2014 David Thompson <davet@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
@ -18,15 +19,16 @@
(define-module (guix scripts import)
#:use-module (guix ui)
#:use-module (guix snix)
#:use-module (guix utils)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-11)
#:use-module (srfi srfi-26)
#:use-module (srfi srfi-37)
#:use-module (ice-9 format)
#:use-module (ice-9 match)
#:use-module (ice-9 pretty-print)
#:export (guix-import))
#:export (%standard-import-options
guix-import))
;;;
@ -61,15 +63,30 @@ rather than \\n."
;;;
;;; Command-line options.
;;; Command line options.
;;;
(define %default-options
'())
(define %standard-import-options '())
;;;
;;; Entry point.
;;;
(define importers '("nix" "pypi"))
(define (resolve-importer name)
(let ((module (resolve-interface
`(guix scripts import ,(string->symbol name))))
(proc (string->symbol (string-append "guix-import-" name))))
(module-ref module proc)))
(define (show-help)
(display (_ "Usage: guix import NIXPKGS ATTRIBUTE
Import and convert the Nix expression ATTRIBUTE of NIXPKGS.\n"))
(display (_ "Usage: guix import IMPORTER ARGS ...
Run IMPORTER with ARGS.\n"))
(newline)
(display (_ "IMPORTER must be one of the importers listed below:\n"))
(format #t "~{ ~a~%~}" importers)
(display (_ "
-h, --help display this help and exit"))
(display (_ "
@ -77,43 +94,19 @@ Import and convert the Nix expression ATTRIBUTE of NIXPKGS.\n"))
(newline)
(show-bug-report-information))
(define %options
;; Specification 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 import")))))
;;;
;;; Entry point.
;;;
(define (guix-import . 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))
(let* ((opts (parse-options))
(args (filter-map (match-lambda
(('argument . value)
value)
(_ #f))
(reverse opts))))
(match args
((nixpkgs attribute)
(let-values (((expr loc)
(nixpkgs->guix-package nixpkgs attribute)))
(format #t ";; converted from ~a:~a~%~%"
(location-file loc) (location-line loc))
(pretty-print expr (newline-rewriting-port (current-output-port)))))
(_
(leave (_ "wrong number of arguments~%"))))))
(()
(format (current-error-port)
(_ "guix import: missing importer name~%")))
((or ("-h") ("--help"))
(show-help)
(exit 0))
(("--version")
(show-version-and-exit "guix import"))
((importer args ...)
(if (member importer importers)
(let ((expr (apply (resolve-importer importer) args)))
(pretty-print expr (newline-rewriting-port (current-output-port))))
(format (current-error-port)
(_ "guix import: invalid importer~%"))))))

89
guix/scripts/import/nix.scm Normal file
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@ -0,0 +1,89 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012, 2013 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2014 David Thompson <davet@gnu.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 scripts import nix)
#:use-module (guix ui)
#:use-module (guix utils)
#:use-module (guix import snix)
#:use-module (guix scripts import)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-11)
#:use-module (srfi srfi-37)
#:use-module (ice-9 match)
#:export (guix-import-nix))
;;;
;;; Command-line options.
;;;
(define %default-options
'())
(define (show-help)
(display (_ "Usage: guix import nix NIXPKGS ATTRIBUTE
Import and convert the Nix expression ATTRIBUTE of NIXPKGS.\n"))
(display (_ "
-h, --help display this help and exit"))
(display (_ "
-V, --version display version information and exit"))
(newline)
(show-bug-report-information))
(define %options
;; Specification of the command-line options.
(cons* (option '(#\h "help") #f #f
(lambda args
(show-help)
(exit 0)))
(option '(#\V "version") #f #f
(lambda args
(show-version-and-exit "guix import nix")))
%standard-import-options))
;;;
;;; Entry point.
;;;
(define (guix-import-nix . 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))
(let* ((opts (parse-options))
(args (filter-map (match-lambda
(('argument . value)
value)
(_ #f))
(reverse opts))))
(match args
((nixpkgs attribute)
(let-values (((expr loc)
(nixpkgs->guix-package nixpkgs attribute)))
(format #t ";; converted from ~a:~a~%~%"
(location-file loc) (location-line loc))
expr))
(_
(leave (_ "wrong number of arguments~%"))))))

83
guix/scripts/import/pypi.scm Normal file
View File

@ -0,0 +1,83 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2014 David Thompson <davet@gnu.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 scripts import pypi)
#:use-module (guix ui)
#:use-module (guix utils)
#:use-module (guix import pypi)
#:use-module (guix scripts import)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-11)
#:use-module (srfi srfi-37)
#:use-module (ice-9 match)
#:use-module (ice-9 format)
#:export (guix-import-pypi))
;;;
;;; Command-line options.
;;;
(define %default-options
'())
(define (show-help)
(display (_ "Usage: guix import pypi PACKAGE-NAME
Import and convert the PyPI package for PACKAGE-NAME.\n"))
(display (_ "
-h, --help display this help and exit"))
(display (_ "
-V, --version display version information and exit"))
(newline)
(show-bug-report-information))
(define %options
;; Specification of the command-line options.
(cons* (option '(#\h "help") #f #f
(lambda args
(show-help)
(exit 0)))
(option '(#\V "version") #f #f
(lambda args
(show-version-and-exit "guix import pypi")))
%standard-import-options))
;;;
;;; Entry point.
;;;
(define (guix-import-pypi . 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))
(let* ((opts (parse-options))
(args (filter-map (match-lambda
(('argument . value)
value)
(_ #f))
(reverse opts))))
(match args
((package-name)
(pypi->guix-package package-name)))))

102
tests/pypi.scm Normal file
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@ -0,0 +1,102 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2014 David Thompson <davet@gnu.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 (test-pypi)
#:use-module (guix import pypi)
#:use-module (guix base32)
#:use-module (guix hash)
#:use-module (srfi srfi-64)
#:use-module (ice-9 match))
(define-syntax-rule (mock (module proc replacement) body ...)
(let* ((m (resolve-module 'module))
(original (module-ref m 'proc)))
(dynamic-wind
(lambda () (module-set! m 'proc replacement))
(lambda () body ...)
(lambda () (module-set! m 'proc original)))))
(define test-json
"{
\"info\": {
\"version\": \"1.0.0\",
\"name\": \"foo\",
\"license\": \"GNU LGPL\",
\"summary\": \"summary\",
\"home_page\": \"http://example.com\",
},
\"releases\": {
\"1.0.0\": [
{
\"url\": \"https://example.com/foo-1.0.0.egg\",
\"packagetype\": \"bdist_egg\",
}, {
\"url\": \"https://example.com/foo-1.0.0.tar.gz\",
\"packagetype\": \"sdist\",
}
]
}
}")
(define test-source
"foobar")
(test-begin "pypi")
(test-assert "pypi->guix-package"
;; Replace network resources with sample data.
(mock ((guix import pypi) url-fetch
(lambda (url file-name)
(with-output-to-file file-name
(lambda ()
(display
(match url
("https://pypi.python.org/pypi/foo/json"
test-json)
("https://example.com/foo-1.0.0.tar.gz"
test-source)
(_ (error "Unexpected URL: " url))))))))
(match (pypi->guix-package "foo")
(('package
('name "python-foo")
('version "1.0.0")
('source ('origin
('method 'url-fetch)
('uri ('string-append "https://example.com/foo-"
'version ".tar.gz"))
('sha256
('base32
(? string? hash)))))
('build-system 'python-build-system)
('inputs
('quasiquote
(("python-setuptools" ('unquote 'python-setuptools)))))
('home-page "http://example.com")
('synopsis "summary")
('description "summary")
('license 'lgpl2.0))
(string=? (bytevector->nix-base32-string
(call-with-input-string test-source port-sha256))
hash))
(x
(pk 'fail x #f)))))
(test-end "pypi")
(exit (= (test-runner-fail-count (test-runner-current)) 0))

4
tests/snix.scm
View File

@ -17,14 +17,14 @@
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (test-snix)
#:use-module (guix snix)
#:use-module (guix import snix)
#:use-module ((guix utils) #:select (%nixpkgs-directory))
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-64)
#:use-module (ice-9 match))
(define factorize-uri
(@@ (guix snix) factorize-uri))
(@@ (guix import snix) factorize-uri))
(define-syntax-rule (every? proc lists ...)
(not (not (every proc lists ...))))