[02:08] <masterpiece> can someone take a look at https://launchpadlibrarian.net/370761539/buildlog_ubuntu-bionic-amd64.rcssserver_15.4.0-1_BUILDING.txt.gz and tell me where am I wrong ?
[02:08] <masterpiece> E: Unable to correct problems, you have held broken packages.
[02:09] <wgrant> masterpiece:  sbuild-build-depends-rcssserver-dummy : Depends: flex (= 2.6.0-11bionic1) but 2.6.4-6 is to be installed
[02:09] <wgrant> masterpiece: Your Build-Depends field specifies that it wants exactly flex 2.6.0-11bionic1, but apt sees 2.6.4-6 is available instead
[02:12] <masterpiece> wgrant, I specified another PPA as dependency https://launchpad.net/~salehi/+archive/ubuntu/flex
[02:13] <masterpiece> wgrant, you can see the build log importing this ppa dependency "ppa.launchpad.net/salehi/flex/ubuntu"
[02:14] <masterpiece> I really got headache of this problem, I'll really appreciate any idea or solution :)
[02:16] <masterpiece> ( I know how to read irc memo, plz send me memo if I got disconnected )
[02:18] <wgrant> masterpiece: Ah, that was an important detail.
[02:19] <wgrant> masterpiece: apt isn't generally very good at working out how to install older versions of dependencies. In this case it might work if you also explicitly build-depend on the old version of libfl-dev.
[02:19] <wgrant> masterpiece: You can test the behaviour in a chroot or container locally.
[12:08] <masterpiece> wgrant, Thanks dude