opensource_eda_tool_install.sh leads to broken Ubuntu sources - PPA
From opensource_eda_tool_install.sh file: sudo add-apt-repository ppa:saltmakrell/ppa -y
This PPA does not exist, or does not work with modern Ubuntu version. I have 20.10 (Groovy Gorilla), and end up with this problem from apt:
sudo apt-get update
[sudo] password for billt:
Hit:1 http://us.archive.ubuntu.com/ubuntu groovy InRelease
Hit:3 http://security.ubuntu.com/ubuntu groovy-security InRelease
Hit:4 http://us.archive.ubuntu.com/ubuntu groovy-updates InRelease
Hit:5 http://us.archive.ubuntu.com/ubuntu groovy-backports InRelease
Hit:6 https://dl.winehq.org/wine-builds/ubuntu groovy InRelease
Hit:7 http://ppa.launchpad.net/kicad/kicad-5.1-releases/ubuntu groovy InRelease
Get:8 https://download.docker.com/linux/ubuntu groovy InRelease [27.4 kB]
Hit:2 https://apt.llvm.org/xenial llvm-toolchain-xenial-6.0 InRelease
Hit:9 http://ppa.launchpad.net/kicad/kicad-dev-nightly/ubuntu groovy InRelease
Hit:10 https://repos.codelite.org/wx3.1.4/ubuntu groovy InRelease
Ign:11 http://ppa.launchpad.net/saltmakrell/ppa/ubuntu groovy InRelease
Hit:12 http://ppa.launchpad.net/ubuntu-toolchain-r/test/ubuntu groovy InRelease
Err:13 http://ppa.launchpad.net/saltmakrell/ppa/ubuntu groovy Release
404 Not Found [IP: 91.189.95.85 80]
Reading package lists... Done
E: The repository 'http://ppa.launchpad.net/saltmakrell/ppa/ubuntu groovy Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
What things are expected to come from the saltmakrell ppa, and what other sources might I get them from?
Did you find any solution? I am facing this problem while installing esim