bug#28138: bug build python-pygit2 on guix 0.13

[Adrien Marin <adrien.marin@ensea.fr>]

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Hi, 

yesterday ,I updated guix and try to install my package's new version and the install fail because of pygit2 error. 

I've found a bug with the package python-pygit2 when I tried to build it: 

" #error You need a compatible libgit2 version (v0.25.x)" 

so I change in the definition of python-pygit2, in propagated input : 

("libgit2" ,libgit2) ---> ("libgit2-0.25.1" ,libgit2-0.25.1) 

and add the definition of libgit2-0.25.1 in my own package 



after that, i get another issue during the build of python-pygit2, during the check phase : 

>ERROR: test_describe_pattern (test.test_describe.DescribeTest)
>----------------------------------------------------------------------
>Traceback (most recent call last):
>  File "/tmp/guix-build-python-pygit2-0.25.0.drv-0/pygit2-0.25.0/test/test_describe.py", line 70, in test_describe_pattern
>   self.assertEqual('public/tag2-2-g2be5719', self.repo.describe(pattern='public/*'))
>  File "/tmp/guix-build-python-pygit2-0.25.0.drv-0/pygit2-0.25.0/pygit2/repository.py", line 728, in describe
>    check_error(err)
>  File "/tmp/guix-build-python-pygit2-0.25.0.drv-0/pygit2-0.25.0/pygit2/errors.py", line 64, in check_error
>    raise GitError(message)
>_pygit2.GitError: Cannot describe - No reference found, cannot describe anything.
>
>----------------------------------------------------------------------
>Ran 266 tests in 11.741s
>
>FAILED (errors=1)
>phase `check' failed after 18.0 seconds
>builder for `/gnu/store/1f3nya5lmmwxyhvc6yalzyn2irwrpkk9-python-pygit2-0.25.0.drv' failed with exit code 1
>@ build-failed /gnu/store/1f3nya5lmmwxyhvc6yalzyn2irwrpkk9-python-pygit2-0.25.0.drv - 1 builder for `/gnu/store/1f3nya5lmmwxyhvc6yalzyn2irwrpkk9-python-pygit2-0.25.0.drv' failed with exit code 1
>guix build: error: build failed: build of `/gnu/store/1f3nya5lmmwxyhvc6yalzyn2irwrpkk9-python-pygit2-0.25.0.drv' failed 

so I looked the dependencies of python-pygit2 and saw that python-cffi changed version in guix 0.13 than my old version 

so I force the 1.4.2 version of python-cffi in the definition of pygit2 AND IT'S WORKING!! 


there is the definition of olds version for python-cffi and libgit2 

define-public libgit2
  (package
    (name "libgit2")
    (version "0.25.1")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://github.com/libgit2/libgit2/"
                                  "archive/v" version ".tar.gz"))
              (file-name (string-append name "-" version ".tar.gz"))
              (sha256
               (base32
                "1cdwcw38frc1wf28x5ppddazv9hywc718j92f3xa3ybzzycyds3s"))))
    (build-system cmake-build-system)
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'fix-hardcoded-paths
           (lambda _
             (substitute* "tests/repo/init.c"
               (("#!/bin/sh") (string-append "#!" (which "sh"))))
             (substitute* "tests/clar/fs.h"
               (("/bin/cp") (which "cp"))
               (("/bin/rm") (which "rm")))
             #t))
         ;; Run checks more verbosely.
         (replace 'check
           (lambda _ (zero? (system* "./libgit2_clar" "-v" "-Q")))))))
    (inputs
     `(("libssh2" ,libssh2)
       ("libcurl" ,curl)
       ("python" ,python-wrapper)
       ("openssl" ,openssl)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (home-page "https://libgit2.github.com/")
    (synopsis "Library providing Git core methods")
    (description
     "Libgit2 is a portable, pure C implementation of the Git core methods
provided as a re-entrant linkable library with a solid API, allowing you to
write native speed custom Git applications in any language with bindings.")
    ;; GPLv2 with linking exception
    (license license:gpl2))) 

(define-public python-cffi-1.4.2 
(package 
(name "python-cffi") 
(version "1.4.2") 
(source 
(origin 
(method url-fetch) 
(uri (pypi-uri "cffi" version)) 
(sha256 
(base32 "161rj52rzi3880lij17d6i9kvgkiwjilrqjs8405k8sf6ryif7cg")))) 
(build-system python-build-system) 
(outputs '("out" "doc")) 
(inputs 
`(("libffi" ,libffi))) 
(propagated-inputs ; required at run-time 
`(("python-pycparser" ,python-pycparser))) 
(native-inputs 
`(("pkg-config" ,pkg-config) 
("python-sphinx" ,python-sphinx) 
("python-pytest" ,python-pytest))) 
(arguments 
`(#:phases 
(alist-cons-after 
'install 'install-doc 
(lambda* (#:key outputs #:allow-other-keys) 
(let* ((data (string-append (assoc-ref outputs "doc") "/share")) 
(doc (string-append data "/doc/" ,name "-" ,version)) 
(html (string-append doc "/html"))) 
(with-directory-excursion "doc" 
(system* "make" "html") 
(mkdir-p html) 
(copy-recursively "build/html" html)) 
(copy-file "LICENSE" (string-append doc "/LICENSE")))) 
%standard-phases))) 
(home-page "http://cffi.readthedocs.org") 
(synopsis "Foreign function interface for Python") 
(description 
"Foreign Function Interface for Python calling C code.") 
(license license:expat))) 



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