[Letsencrypt-devel] Bug#805738: wrong dependency on python-acme
Sven Hartge
sven at svenhartge.de
Sat Nov 21 20:56:50 UTC 2015
Package: python-letsencrypt
Version: 0.0.0.dev20151114-3
Severity: serious
Hi!
In trying to fix #805185 you added a dependency on
python-acme (= ${source:Upstream-Version})
to the python-letsencrypt package, but this prohibits the installation
of that package:
The following packages have unmet dependencies:
python-letsencrypt : Depends: python-acme (= 0.0.0.dev20151114) but 0.0.0.dev20151114-1 is to be installed
E: Unable to correct problems, you have held broken packages.
I think the dependency should look like this:
python-acme (>= ${source:Upstream-Version})
^!
I am no expert on dpkg-substvars or the Debian policy concerning that matter,
but a local rebuild of python-letsencrypt with that change allows the
package to install correctly.
As far as I can see, using a >= relation is the only way to ensure that the
python-acme package is at least the same version as the python-letsencrypt
packge.
But this may/will break, if python-acme is upgraded to a higher version
before python-letsencrypt. So you'd need somthing like
python-acme (>= ${source:Upstream-Version}), python-acme ( <= ${binary:Version})
so that the version of the python-acme package is at least the same upstream
version but not higher than the version of python-letsencrypt.
This will of course break if the version of python-acme is increased
to a higher Debian release (for example -4 while python-letsencrypt
is still at -3) than python-letsencrypt.
I guess one cannot automatically express such a strict inter-package
dependency if the involved packages are not built from the same
source package. It seems the only viable solution is to manually
specify the correct python-acme version.
Grüße,
Sven.
-- System Information:
Debian Release: stretch/sid
APT prefers unstable
APT policy: (500, 'unstable'), (500, 'testing'), (200, 'experimental')
Architecture: i386 (x86_64)
Foreign Architectures: amd64
Kernel: Linux 4.1.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=de_DE.utf8, LC_CTYPE=de_DE.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages python-letsencrypt depends on:
ii python-acme 0.0.0.dev20151114-1
ii python-configargparse 0.10.0-1
ii python-configobj 5.0.6-2
ii python-cryptography 1.1-1+b1
ii python-dialog 3.3.0-1
ii python-mock 1.3.0-2.1
ii python-openssl 0.15.1-2
ii python-parsedatetime 1.4-1
ii python-pkg-resources 18.4-2
ii python-psutil 2.2.1-3+b1
ii python-requests 2.8.1-1
ii python-rfc3339 1.0-2
ii python-six 1.10.0-1
ii python-tz 2012c+dfsg-0.1
ii python-zope.component 4.2.2-1
ii python-zope.interface 4.1.3-1
pn python:any <none>
Versions of packages python-letsencrypt recommends:
ii letsencrypt 0.0.0.dev20151114-3
python-letsencrypt suggests no packages.
-- debconf-show failed
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