I'm having problems installing calibre, when I use aptitude install calibre I get this output
root@debian:/home/gustavo# aptitude install calibre
The following NEW packages will be installed:
calibre calibre-bin{ab} javascript-common{a} libchm1{a}
libdouble-conversion1{a} libjs-jquery{a} libjs-sphinxdoc{a}
libjs-underscore{a} libpodofo0.9.0{a} libqt5clucene5{a}
libqt5designer5{a} libqt5help5{a} libqt5qml5{a} libqt5quick5{a}
libqt5svg5{a} libqt5webkit5{a} libtidy-0.99-0{a} libyaml-0-2{a}
python-apsw{a} python-beautifulsoup{a} python-bs4{a}
python-cherrypy3{a} python-cssselect{a} python-cssutils{a}
python-dateutil{a} python-dnspython{a} python-feedparser{a}
python-html5lib{a} python-lxml{a} python-markdown{a}
python-mechanize{a} python-netifaces{a} python-pygments{a}
python-pyparsing{a} python-pyqt5{ab} python-pyqt5.qtsvg{a}
python-pyqt5.qtwebkit{a} python-repoze.lru{a} python-routes{a}
python-sip{a} python-utidylib{a} python-webob{a} python-yaml{a}
0 packages upgraded, 43 newly installed, 0 to remove and 0 not upgraded.
Need to get 42.9 MB of archives. After unpacking 157 MB will be used.
The following packages have unmet dependencies:
python-pyqt5 : Depends: qtbase-abi-5-3-2 which is a virtual package.
calibre-bin : Depends: qtbase-abi-5-3-2 which is a virtual package.
The following actions will resolve these dependencies:
Keep the following packages at their current version:
1) calibre [Not Installed]
2) calibre-bin [Not Installed]
3) python-pyqt5 [Not Installed]
4) python-pyqt5.qtsvg [Not Installed]
5) python-pyqt5.qtwebkit [Not Installed]
Accept this solution? [Y/n/q/?]
What is the problem with the dependencies? And I have already installed libqt5core5a witch is said to provide the virtual package for the qtbase-abi-5-3-2, please help me! =]
Debian unstable (aka sid) is mainly called unstable not because of the quality of the software but because of quirks with the dependencies.
in contrast, Debian testing (kind of) guarantees that only packages with resolvable dependencies are available.
So: if you want to have a stable/working system (and are no expert), you might want to avoid unstable (testing should be ok though).
And for what it is worth: as of now, the issue seems to be resolved