I can verify this in Sid amd64. $ sudo apt-get dist-upgrade Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these. The following packages have unmet dependencies: bison : Depends: libbison-dev (= 1:2.5.dfsg-2) but it is not installed E: Unmet dependencies. Try using -f.
$ sudo apt-get -f install Reading package lists... Done Building dependency tree Reading state information... Done Correcting dependencies... Done The following packages were automatically installed and are no longer required: libmatroska4 liby-dev libhunspell-1.2-0 libjs-mootools Use 'apt-get autoremove' to remove them. The following extra packages will be installed: libbison-dev The following NEW packages will be installed: libbison-dev 0 upgraded, 1 newly installed, 0 to remove and 88 not upgraded. 14 not fully installed or removed. Need to get 0 B/289 kB of archives. After this operation, 325 kB of additional disk space will be used. Do you want to continue [Y/n]? Retrieving bug reports... Done Parsing Found/Fixed information... Done serious bugs of libbison-dev (-> 1:2.5.dfsg-2) <unfixed> #645047 - bison fails to upgrade, file conflict between libbison-dev and liby-dev Summary: libbison-dev(1 bug) Are you sure you want to install/upgrade the above packages? [Y/n/?/...] (Reading database ... 249756 files and directories currently installed.) Unpacking libbison-dev (from .../libbison-dev_1%3a2.5.dfsg-2_amd64.deb) ... dpkg: error processing /var/cache/apt/archives/libbison-dev_1%3a2.5.dfsg-2_amd64.deb (--unpack): trying to overwrite '/usr/lib/x86_64-linux-gnu/liby.a', which is also in package liby-dev 1:2.5.dfsg-1 configured to not write apport reports dpkg-deb: error: subprocess paste was killed by signal (Broken pipe) Errors were encountered while processing: /var/cache/apt/archives/libbison-dev_1%3a2.5.dfsg-2_amd64.deb E: Sub-process /usr/bin/dpkg returned an error code (1)
