On Wed, 28 Mar 2018 09:46:53 -0400 The Wanderer said: > On 2018-03-28 at 09:39, Laurent Debian wrote: > > > Dear all, > > I have one question > > Does that aptitude message looks normal to you :" > > > > "python-tornado breaks : python-zmq (< 17) but 16.0.2-2+b1 is to be > > installed" > > > > Does I misunderstand or does it looks like aptitude thinks that > > 16.0... is not less than 17 ? > > No, it's saying "because the version of python-zmq which is selected > for installation is 16.x, we can't install a version of > python-tornado which says it only works with version 17 and above". > > Why version 16.x is selected for installation is another question, but > we don't have enough information to go on in that regard.
Sorry but I still don't get it. As I understand, aptitude appears to say that python-zmq with version *less than* 17 is needed? That aside, python-tornado and python-zmq neither depends nor conflicts with one another. It may be different for Stretch, though. # both tornado and zmq is not currently installed ~$ dpkg -l python-tornado python-zmq dpkg-query: no packages found matching python-tornado dpkg-query: no packages found matching python-zmq # tornado has nothing (directly) to do with zmq ~$ apt-cache show python-tornado Package: python-tornado Version: 5.0.0-1 Installed-Size: 1682 Maintainer: Debian Python Modules Team <python-modules-t...@lists.alioth.debian.org> Architecture: amd64 Depends: ca-certificates, python (<< 2.8), python (>= 2.7~), python-backports-abc, python-concurrent.futures, python-singledispatch, python:any (<< 2.8), python:any (>= 2.7.5-5~), libc6 (>= 2.4) # zmq has nothing (directly) to do with tornado ~$ apt-cache show python-zmq Package: python-zmq Source: pyzmq (16.0.2-2) Version: 16.0.2-2+b1 Installed-Size: 1185 Maintainer: Debian Python Modules Team <python-modules-t...@lists.alioth.debian.org> Architecture: amd64 Depends: python (<< 2.8), python (>= 2.7~), python:any (<< 2.8), python:any (>= 2.7.5-5~), libc6 (>= 2.14), libzmq5 (>= 4.1.2) # tornado has nothing (directly or indirectly) to do with zmq ~$ apt-get -s install python-tornado ... The following additional packages will be installed: python-backports-abc python-singledispatch Suggested packages: python-mysqldb python-tornado-doc python-twisted The following NEW packages will be installed: python-backports-abc python-singledispatch python-tornado 0 upgraded, 3 newly installed, 0 to remove and 401 not upgraded. Inst python-backports-abc (0.5-2 Debian:testing [all]) Inst python-singledispatch (3.4.0.3-2 Debian:testing [all]) Inst python-tornado (5.0.0-1 Debian:testing [amd64]) Conf python-backports-abc (0.5-2 Debian:testing [all]) Conf python-singledispatch (3.4.0.3-2 Debian:testing [all]) Conf python-tornado (5.0.0-1 Debian:testing [amd64]) # zmq has nothing (directly or indirectly) to do with tornado ~$ apt-get -s install python-zmq ... The following NEW packages will be installed: python-zmq 0 upgraded, 1 newly installed, 0 to remove and 401 not upgraded. Inst python-zmq (16.0.2-2+b1 Debian:testing [amd64]) Conf python-zmq (16.0.2-2+b1 Debian:testing [amd64]) So, where exactly python-zmq enters the picture, I don't know. Regards -- Abdullah Ramazanoglu
