installing git on linuxcnc

Hello,

Iam still learning about linuxcnc. I was trying following this guys steps: TIME 22:56

I want to install git on linuxcnc, it seems interesting for me.

But when I type sudo apt-get install git-core, or sudo apt-get install git nothing happens... I was searching for this for long time on the internet but havent found anything.
sudo apt-get install git-core gives me back :

ondracnc@localhost:~$ sudo apt-get install git-core
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Note, selecting 'git' instead of 'git-core'
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 git : Depends: liberror-perl but it is not installable
       Recommends: patch but it is not going to be installed
E: Unable to correct problems, you have held broken packages. 

any thoughts?
 

not working from last command :{

ondracnc@localhost:~$ sudo apt install git
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 git : Depends: liberror-perl but it is not installable
       Recommends: patch but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

 

It sounds like you have installed a different distro of Linux if git won't install
Following random tutorials can lead you off the beaten track as often they are obsolete.
sudo apt install git should work
The instructions to build linuxcnc are documented here
linuxcnc.org/docs/stable/html/code/building-linuxcnc.html 

If it helps to watch another random tutorial,  I did a video here

ondracnc@localhost:~$ sudo apt install -f
Reading package lists... Done
Building dependency tree       
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 178 not upgraded.

I installed linuxcnc from the linuxcnc website via bootable USB.
What does 178 not upgraded mean?

ondracnc@localhost:~$ sudo apt update
Hit:1 security.debian.org/debian-security buster/updates InRelease
Hit:2 www.linuxcnc.org buster InRelease     
Reading package lists... Done                      
Building dependency tree       
Reading state information... Done
179 packages can be upgraded. Run 'apt list --upgradable' to see them.
ondracnc@localhost:~$ sudo apt install git git-gui
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 git : Depends: liberror-perl but it is not installable
       Recommends: patch but it is not going to be installed
E: Unable to correct problems, you have held broken packages.


before that I also tried sudo apt upgrade - it did something but actually nothing - typical sentence was like : Cannot initiate the connection to security.