[Qgis-user] Installing either qgis 2.X and qgis 3.X

[Patrick Dunford]

Compiling different versions is for really dedicated hard core people. 
You lose the advantage of a package management system being able to 
automatically update the packages when updates are released. Once you 
have compiled a version it is fixed in time because it is not able to be 
managed by the package management system so when a new release comes out 
you have to compile that version, and so on.

This is why I personally recommend some form of virtualisation as being 
a more straightforward solution for most people. I used Oracle 
VirtualBox on Linux and had a pile of VMs and they don't take up much 
disk space, you just need to ensure you have enough RAM on your computer 
to be able to allocate a reasonable amount to a VM. The guest OS can be 
a very lightweight environment like Lubuntu that doesn't have all the 
bells and whistles and eye candy that people might have with vanilla 
Ubuntu and doesn't gobble up a lot of system resources.

On 27/12/18 2:52 AM, matteo wrote:
> Hi,
>
> I thiink the easiest solution given that you are on Ubuntu, is compiling
> QGIS. Then you can have as many independent QGIS versions as you want.
>
> Yes, at the beginning the slope could be hard, but once you know how
> then you just go smooth.
>
> Have a look at:
>
> https://github.com/qgis/QGIS/blob/master/INSTALL
>
> Cheers
>
> Matteo
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