I switched back to stable Lazarus 1.6.4 and I found something that I think I should report here.
The issue #1 that I mentioned previously "Issue #1: Installation - FPC Conflict" won't always show up when installing FPC. But it will show when installing different version of FPC.
For example:
01. Uninstall Lazarus, FPC 3.0.3, FPC-Source 3.0.3 (using Synaptic Package Manager)
02. Install FPC 3.0.2 (using deb file, not build from source)
03. "Error: Breaks existing package 'fpc' conflict: fpc ()" will show up.
- That issue happens on FPC 3.0.3 and FPC 3.0.2
- It only happens when it has different version installed previously
- It will not happen if the previous installed version is the same as the version that is going to install
- Ignore that error message, the FPC will work correctly
- Tested on Ubuntu Mate 16.10 64-bit