Hello Yeti, thanks for testing.
The bug seems to be fixed as there is now a 2.57-1~ppa1~focal1 version, which installs fine. (Notice the -1~ difference between my error message and your screenshot) It is very sad to read, that the ubuntu repositories are broken, as I think this is the most common or at least simple way to install gwyddion on this system. As for building from source. Thanks for the tip, but I think this is more a solution for a single computer and not for groups. And as I stated in the workaround for 1): gwyddion was working fine in the 2.57 version, if you got it installed. Best wishes, Sebastian ~issue closed~ Am 28.01.21 um 15:19 schrieb David Nečas (Yeti): > On Tue, Jan 26, 2021 at 01:46:56PM +0100, Sebastian Schenk wrote: >> I am maintaining several linux PCs at my work space. (Xubuntu 20.04) and >> have the current issue, that the last update from the PPA >> 2.57-0~ppa1~focal1 broke the normal gwyddion installation. >> >> 1) The error message is (translated): >> "gwyddion depends on libgwyddion2-0 (>= 2.57); but: >> version of libgwyddion2-0:amd64 on the system is 2.57-0~ppa1~focal1", >> if I have installed the libgwyddion2-0 manually before gwyddion via apt. >> The message is similar, if the libgwyddion2-0 package is not installed >> manually. In both cases apt refuses to install gwyddion. >> >> Workaround is to install the libgwyddion2-0 package via apt and the >> gwyddion.deb via dpkg, leaving apt in an erroneous state, which causes >> issues with updates of other packages, but a working gwyddion. >> This is not the way to go. > I cannot reproduce this. I set up an Ubuntu 20.04 virtual machine, > added the PPA with > > sudo add-apt-repository ppa:gwyddion-spm/ppa > > and used synaptic to install gwyddion. It worked normally (wanting to > install gwyddion-common and libgwyddion2-0 from the PPA as dependencies) > and the result is in the attached screenshot. > > Now, when I tried to remove the packages, something fishy was definitely > going on. Apparently the result depends on the order in which I select > the three packages for removal (even though if they are all three > selected for removal at the end the result should be the same). So the > removal can either work normally or you get an error about broken > packages and it refuses to remove them. > > Anyway, after removing all three again, I ran > > sudo apt install gwyddion > > which again installed all three packages from the PPA without a hitch. > >> 2) The alternative of removing the PPA and installing via ubuntu >> repositorys gives the 2.55 version, which installs fine. But starting >> the application gives an error about modules are not installed >> correctly. > The Ubuntu package is unfortunately completely broken. I am not sure > how they managed to break it so badly, but it is not linked correctly, > missing maths functions, and I was not even able to work around it using > LD_PRELOAD. See also > > https://sourceforge.net/p/gwyddion/discussion/general/thread/a90fb58eaa/ > > which also contain simple working instructions for building from source > code. > >> I am not sure, whom to contact regarding these issues. I have contacted >> the PPA maintainer, but haven't received an answer until now. Sadly the >> .deb files from the previous version 2.56 are not available in the PPA >> any more. And as a mail announcing the next version came up, I just >> wanted to mention it beforehand. > If I recall correctly, I even tweaked the linking slightly in response > to the Ubuntu breakage. However, the program works fine when built > from source code (all versions I tried). So the devil is in packaging – > and we have no way to fix distribution packages. > > Regards, > > Yeti
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