Dear MOTUs, I'm trying to set up a new PPA for the fantastic 3D modeller tool blender. Until mid 2014, IRIE Shinsuke maintained a Blender PPA for Ubuntu (https://launchpad.net/~irie/+archive/ubuntu/blender). I don't know what happended to IRIE Shinsuke but the PPA has not chnaged since, despite the fact that new Blender versions appeared (moved from 2.71 to 2.73 with several new features).
I have been trying to set up a mirror of IRIE's PPA and then update Blender sources to move forward. But because of the intricacy of Blender compilation (it depends on a very large number of external software and libraries which must have precise versions), I have been unable to achieve this. I have been through several issues but I now have an error that I simply don't understand. The Build log is here: https://launchpadlibrarian.net/193587948/buildlog_ubuntu-utopic-amd64.openshadinglanguage_1.5.0-0thomas~utopic0_FAILEDTOBUILD.txt.gz It says that The following packages have unmet dependencies: libopenexr-dev : Depends: libopenexr21 (= 2.1.0-thomas~utopic0) but it is not going to be installed E: Unable to correct problems, you have held broken packages. apt-get failed. The packages libopenexr-dev and libopenser21 are provided by the setup PPA. I have all those packages installed on my computer with no issue at all, and with a successful debuild. The dependencies of libopenexr21 (= 2.1.0-thomas~utopic0) are very limited so I cannot see what prevents installation: Depends on: libc6 (>=2.14), libgcc1 (>= 1:4.1.1), libilmbase11 (>= 2.1.0), libstdc++ (>=4.9), zlib1g (>=1:1.1.4) PreDepends: multiarch-support Replaces: libopenexr (< 2.1.0-thomas~utopic0) Breaks: libopenexr21 (!=2.1.0-thomas~utopic0) I have spent quite a time but I fail to understand what is the issue. I thought a fresh eye (and brain) could help. The whole PPA is accessible here: https://launchpad.net/~thomas-schiex/+archive/ubuntu/blender Thomas
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