Installing both Noetic and Mellodic in 20.04?
First, I am a beginner of ROS.
I installed Ubuntu 20.04 on my desktop and now I installed noetic on it since they are used in my project team.
However, in my another class, they recommended to install mellodic with Ubuntu 18.04
I found there are some differences between Noetic and Mellodic such as the Python version, catkin_make version etc.
So, I tried to install both Noetic and Mellodic in 20.04 but following error was shown in installing tutorial
$ sudo apt install ros-melodic-desktop-full
E: Unable to locate package ros-melodic-desktop-full
I double checked that I followed the tutorial well.
There were some answers for similar situations but now I'm worried that those solutions might have a negative effect on Melodics.
So, my question is..
Do you recommend installing both Noetic and Melodic in Ubuntu 20.04?
If not, which version do you recommend to install if you had the same situation as me?
If yes, how can I solve the above error?
I'm not sure this is right place to ask this kind of question
Thank you
my gcc version : gcc (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0 my ubuntu bersion : Ubuntu 20.04.4 LTS
What does "install" mean here exactly?
Build from source? Install using
apt? Something else?The direct answer would be: Melodic and Noetic cannot be installed next to each other, as there is no single OS for which binary packages are available for both ROS versions (ie: there is no version of Ubuntu for which binary packages of both Melodic and Noetic exist).
I meant using apt. Thank you for your replying!