calibre develop on gentoo

[t3d]

Hi Kovid,

I've decided to do my development on gentoo, but it turns out that preparing the environment is not a trivial task...

I'm using code cloned from github and trying to get calibre development installed. The OS is 64bit, lxde with no kde or anything like that.
At first I got

[tomek ~/calibre]$ sudo python2.7 setup.py develop
Traceback (most recent call last):
  File "setup.py", line 13, in <module>
    import setup.commands as commands
  File "/home/tomek/calibre/setup/commands.py", line 28, in <module>
    from setup.translations import POT, GetTranslations, Translations, ISO639, ISO3166
  File "/home/tomek/calibre/setup/translations.py", line 14, in <module>
    from setup.parallel_build import parallel_check_output
  File "/home/tomek/calibre/setup/parallel_build.py", line 13, in <module>
    from setup.build_environment import cpu_count
  File "/home/tomek/calibre/setup/build_environment.py", line 84, in <module>
    qraw = subprocess.check_output([QMAKE, '-query']).decode('utf-8')
  File "/usr/lib64/python2.7/subprocess.py", line 566, in check_output
    process = Popen(stdout=PIPE, *popenargs, **kwargs)
  File "/usr/lib64/python2.7/subprocess.py", line 710, in __init__
    errread, errwrite)
  File "/usr/lib64/python2.7/subprocess.py", line 1327, in _execute_child
    raise child_exception
OSError: [Errno 2] No such file or directory

So i figured out, that I need to have a qmake installed.
Got qt overlay installed to get qt5 (emerge @qt5-essentials). So now I have a qmake:

[tomek ~/calibre]$ which qmake
/usr/bin/qmake
[tomek ~/calibre]$ equery b /usr/bin/qmake
 * Searching for /usr/bin/qmake ... 
dev-qt/qtchooser-0_p20140613 (/usr/bin/qmake -> qtchooser)
dev-qt/qtchooser-0_p20140613 (/usr/bin/qtchooser)
[tomek ~/calibre]$ sudo python2.7 setup.py develop
Password:
qmake: could not find a Qt installation of ''
Traceback (most recent call last):
  File "setup.py", line 13, in <module>
    import setup.commands as commands
  File "/home/tomek/calibre/setup/commands.py", line 28, in <module>
    from setup.translations import POT, GetTranslations, Translations, ISO639, ISO3166
  File "/home/tomek/calibre/setup/translations.py", line 14, in <module>
    from setup.parallel_build import parallel_check_output
  File "/home/tomek/calibre/setup/parallel_build.py", line 13, in <module>
    from setup.build_environment import cpu_count
  File "/home/tomek/calibre/setup/build_environment.py", line 84, in <module>
    qraw = subprocess.check_output([QMAKE, '-query']).decode('utf-8')
  File "/usr/lib64/python2.7/subprocess.py", line 573, in check_output
    raise CalledProcessError(retcode, cmd, output=output)
subprocess.CalledProcessError: Command '['/usr/bin/qmake', '-query']' returned non-zero exit status 1
[tomek ~/calibre]$ qmake -query
qmake: could not find a Qt installation of ''
[tomek ~/calibre]$ echo $?
1

Hm, that's obviously not the one we need...
but there is another one, buried somewhere outside of $PATH:

/usr/lib64/qt5/bin/qmake

So I take this guy and pass it to python:

[tomek ~/calibre]$ sudo PATH=/usr/lib64/qt5/bin/:$PATH python2.7 setup.py develop
Traceback (most recent call last):
  File "setup.py", line 13, in <module>
    import setup.commands as commands
  File "/home/tomek/calibre/setup/commands.py", line 28, in <module>
    from setup.translations import POT, GetTranslations, Translations, ISO639, ISO3166
  File "/home/tomek/calibre/setup/translations.py", line 14, in <module>
    from setup.parallel_build import parallel_check_output
  File "/home/tomek/calibre/setup/parallel_build.py", line 13, in <module>
    from setup.build_environment import cpu_count
  File "/home/tomek/calibre/setup/build_environment.py", line 96, in <module>
    from PyQt5.QtCore import PYQT_CONFIGURATION
ImportError: No module named PyQt5.QtCore

Isn't it the qtcore I have installed?

mutex calibre # emerge -av qtcore

These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild   R    ] dev-qt/qtcore-5.4.0_beta:5::qt  USE="-debug -icu {-test}" 0 KiB

What should I have installed? I assume you also do your development on gentoo. Maybe you could post the list of ebuilds installed from qt overlay?

And I know that there is no need to install the development version, but the ebuild on gentoo is for calibre-1.48...

[kovidgoyal]

You dont need to install anything. Just install the official calibre binary from http://calibre-ebook.com/download_linux, that will acts as its own complete runtime.

See the instructions here: http://manual.calibre-ebook.com/develop.html

[eschwartz]

You can just use the binaries from the main website, and use the CALIBRE_DEVELOP_FROM variable to run the source code from your GitHub clone.

Much easier than messing around with setting up the compilation yourself.

Also, see Fully automatic calibre installer/updater for linux to keep the binaries updated (necessary when C++ extensions are updated).

[t3d]

Thanks, using the CALIBRE_DEVELOP_FROM should be sufficient.