Re: pybitmessage, python2-pyqt-4 - strace and packages

[Ricardo Wurmus <rekado@elephly.net>]

ng0@we.make.ritual.n0.is writes:

> The strace output is very long, but I hope someone can help me
> with more experience with python.
> The visible error is that pyqt-4 is not found, but strace throws
> many more.
[…]

> insert-file: (pybitmessage) in gnu/packages/python.scm:

It would be easier for others to test this if this were simply a patch
that we could apply on master.  Much easier than following manual
instructions.

> (define-public python-pyqt-4
>   (package (inherit python-pyqt)
>     (name "python-pyqt")
>     (version "4.11.4")
>     (source
>       (origin
>         (method url-fetch)
>         (uri
>           (string-append "mirror://sourceforge/pyqt/PyQt4/"
>                          "PyQt-" version "/PyQt-x11-gpl-"
>                          version ".tar.gz"))
>         (sha256
>          (base32
>           "01zlviy5lq8g6db84wnvvpsrfnip9lbcpxagsyqa6as3jmsff7zw"))))
>     (native-inputs
>      `(("python-sip" ,python-sip)
>        ("qt" ,qt-4)))
>     (arguments
>      `(#:tests? #f ; no check target
>        #:modules ((srfi srfi-1)
>                   ,@%gnu-build-system-modules)
>        #:phases
>          (alist-replace
>          'configure
>          (lambda* (#:key inputs outputs #:allow-other-keys)
>            (let* ((out (assoc-ref outputs "out"))
>                   (bin (string-append out "/bin"))
>                   (sip (string-append out "/share/sip"))
>                   (python (assoc-ref inputs "python"))
>                   (python-version
>                     (last (string-split python #\-)))
>                   (python-major+minor
>                     (string-join
>                       (take (string-split python-version #\.) 2)
>                       "."))
>                   (lib (string-append out "/lib/python"
>                                       python-major+minor
>                                       "/site-packages")))
>              (zero? (system* "python" "configure.py"
>                              "--confirm-license"
>                              "--bindir" bin
>                              "--destdir" lib
>                              "--sipdir" sip))))
>          %standard-phases)))
>     (license (list gpl2 gpl3)))) ; choice of either license
>
> (define-public python2-pyqt-4
>   (package (inherit python-pyqt-4)
>     (name "python2-pyqt-4")
>     (native-inputs
>      `(("python-sip" ,python2-sip)
>        ("qt" ,qt-4)))
>     (inputs
>      `(("python" ,python-2)))))

[…]
> open("/gnu/store/2mz84alls2i314x4506wdw15zwmz82n8-python-2.7.10/lib/python2.7/site-packages/PyQt4.so", O_RDONLY) = -1 ENOENT (No such file or directory)
> open("/gnu/store/2mz84alls2i314x4506wdw15zwmz82n8-python-2.7.10/lib/python2.7/site-packages/PyQt4module.so", O_RDONLY) = -1 ENOENT (No such file or directory)
> open("/gnu/store/2mz84alls2i314x4506wdw15zwmz82n8-python-2.7.10/lib/python2.7/site-packages/PyQt4.py", O_RDONLY) = -1 ENOENT (No such file or directory)
> open("/gnu/store/2mz84alls2i314x4506wdw15zwmz82n8-python-2.7.10/lib/python2.7/site-packages/PyQt4.pyc", O_RDONLY) = -1 ENOENT (No such file or directory)
> write(1, "ERROR: The PyQt4 package is not "..., 104ERROR: The PyQt4 package is not available. PyBitmessage requires PyQt 4.8 or later and Qt 4.7 or later.

Have you checked what files are installed by your pyqt-4 package?  Do
any of the files that are searched for appear in the output of that
package?

> write(1, "ERROR: The curses interface can "..., 88ERROR: The curses interface can not be used. The pythondialog package is not available.

You haven’t finished packaging all dependencies.  The “pythondialog”
package is also required.

The fact that it searches for libraries or packages in so many paths is
normal, because it only has a list of search paths.  It would be nice to
fix this in a general fashion one day (because all this searching takes
up time), but it’s harmless.  If the needed file is on a search path it
will eventually be found.

~~ Ricardo