Install ROS Noetic on Ubuntu 20.04 LTS (KDE NEON)

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For your information, the here link doesn't work. In your terminal, type sudo aptitude install ros-noetic-desktop-fullto show what dependencies are unmet. If your error output is similar to

The following packages have unmet dependencies:
libpcre3-dev : Depends: libpcre3 (= 2:8.39-12build1) but 2:8.44-2+ubuntu18.04.1+deb.sury.org+1 is installed libpcre2-dev : Depends: libpcre2-8-0 (= 10.34-7) but 10.36-2+ubuntu18.04.1+deb.sury.org+2 is installed

Type sudo apt install --reinstall libpcre3=2:8.39-12build1 and sudo apt install --reinstall libpcre2-8-0=10.34-7 Keep in mind, what comes after lib and the equal sign, which is the required version, will vary depending on your Ubuntu version. I have bolded both of it in the blockquote to show it. So just follow the formula sudo apt install --reinstall lib_library_name=required_version and sudo apt install --reinstall lib_libraryname_requiredversion.

Alternatively, you can just remove and reinstall withsudo apt-get remove ros-*, thensudo apt-get install ros-noetic-desktop-full. Installing the broken packages individually by typingsudo apt-get install ros-distro-pkg_name` might do the trick too.

~Gundam Out`

What happens if you run sudo apt install ros-noetic-desktop instead? Somehow you can't install that one, so what errors do you get when you try regardless?