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gnu: Add python-magic.

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* gnu/packages/python.scm (python-magic, python2-magic): New variables.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>
This commit is contained in:
Chris Marusich 2016-03-27 19:10:48 -07:00 committed by Ludovic Courtès
parent 3bd9672c85
commit daeeea7154
1 changed files with 66 additions and 2 deletions
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68
gnu/packages/python.scm
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@ -16,7 +16,7 @@
;;; Copyright © 2015, 2016 Erik Edrosa <erik.edrosa@gmail.com>
;;; Copyright © 2015, 2016 Efraim Flashner <efraim@flashner.co.il>
;;; Copyright © 2015 Kyle Meyer <kyle@kyleam.com>
;;; Copyright © 2015 Chris Marusich <cmmarusich@gmail.com>
;;; Copyright © 2015, 2016 Chris Marusich <cmmarusich@gmail.com>
;;; Copyright © 2016 Danny Milosavljevic <dannym+a@scratchpost.org>
;;;
;;; This file is part of GNU Guix.
@ -6056,7 +6056,10 @@ (define-public python-file
#t))))))
(inputs `(("file" ,file)))
(self-native-input? #f)
(synopsis "Python bindings to the libmagic file type guesser")))
(synopsis "Python bindings to the libmagic file type guesser. Note that
this module and the python-magic module both provide a \"magic.py\" file;
these two modules, which are different and were developed separately, both
serve the same purpose: provide Python bindings for libmagic.")))
(define-public python2-file
(package-with-python2 python-file))
@ -8490,3 +8493,64 @@ (define-public python-rarfile
(define-public python2-rarfile
(package-with-python2 python-rarfile))
(define-public python-magic
(package
(name "python-magic")
(version "0.4.3")
(source
(origin
(method url-fetch)
(uri (string-append "https://github.com/ahupp/python-magic/archive/"
version ".tar.gz"))
(sha256
(base32
"17bgy92i7sb021f2s4mw1dcvpm6p1mi9jihridwy1pyn8mzvpjgk"))
(file-name (string-append name "-" version "-checkout"))))
(build-system python-build-system)
(arguments
;; The tests are unreliable, so don't run them. The tests fail
;; under Python3 because they were written for Python2 and
;; contain import statements that do not work in Python3. One of
;; the tests fails under Python2 because its assertions are
;; overly stringent; it relies on comparing output strings which
;; are brittle and can change depending on the version of
;; libmagic being used and the system on which the test is
;; running. In my case, under GuixSD 0.10.0, only one test
;; failed, and it seems to have failed only because the version
;; of libmagic that is packaged in Guix outputs a slightly
;; different (but not wrong) string than the one that the test
;; expected.
'(#:tests? #f
#:phases (modify-phases %standard-phases
;; Replace a specific method call with a hard-coded
;; path to the necessary libmagic.so file in the
;; store. If we don't do this, then the method call
;; will fail to find the libmagic.so file, which in
;; turn will cause any application using
;; python-magic to fail.
(add-before 'build 'hard-code-path-to-libmagic
(lambda* (#:key inputs #:allow-other-keys)
(let ((file (assoc-ref inputs "file")))
(substitute* "magic.py"
(("ctypes.util.find_library\\('magic'\\)")
(string-append "'" file "/lib/libmagic.so'")))
#t))))))
(native-inputs
`(("python-setuptools" ,python-setuptools)))
(inputs
;; python-magic needs to be able to find libmagic.so.
`(("file" ,file)))
(home-page "https://github.com/ahupp/python-magic")
(synopsis "File type identification using libmagic")
(description
"This module uses ctypes to access the libmagic file type
identification library. It makes use of the local magic database and
supports both textual and MIME-type output. Note that this module and
the python-file module both provide a \"magic.py\" file; these two
modules, which are different and were developed separately, both serve
the same purpose: to provide Python bindings for libmagic.")
(license license:expat)))
(define-public python2-magic
(package-with-python2 python-magic))