opensource_eda_tool_install.sh leads to broken Ubuntu sources - PPA

[amigabill]

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?

[codholic]

Did you find any solution? I am facing this problem while installing esim

[Uddhav07]

same issue broo

[Uddhav07]

i did this

sudo add-apt-repository --remove ppa:saltmakrell/ppa
sudo apt update

it worked for this, skipped this thing

but now i got this error

[INFO] Checking Lemon (System: none, Required: 1.3.1)
[INFO] Cloning Lemon...... ✔
[INFO] Configuring Lemon...... ✔
[INFO] Building and installing Lemon...... ✖
[  5%] Building CXX object lemon/CMakeFiles/lemon.dir/arg_parser.cc.o
[ 10%] Building CXX object lemon/CMakeFiles/lemon.dir/base.cc.o
[ 15%] Building CXX object lemon/CMakeFiles/lemon.dir/lp_skeleton.cc.o
[ 21%] Building CXX object lemon/CMakeFiles/lemon.dir/lp_base.cc.o
[ 26%] Building CXX object lemon/CMakeFiles/lemon.dir/random.cc.o
[ 31%] Building CXX object lemon/CMakeFiles/lemon.dir/color.cc.o
[ 36%] Building CXX object lemon/CMakeFiles/lemon.dir/bits/windows.cc.o
/tmp/DependencyInstaller-bCZSkW/lemon-graph/lemon/arg_parser.cc:224:20: warning: unused variable 's' [-Wunused-variable]
  224 |     Opts::iterator s = _opts.find(syn);
      |                    ^
In file included from /tmp/DependencyInstaller-bCZSkW/lemon-graph/lemon/random.cc:22:
/tmp/DependencyInstaller-bCZSkW/lemon-graph/lemon/random.h:252:9: error: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
  252 |         register Word *curr = state + length - 1;
      |         ^~~~~~~~
/tmp/DependencyInstaller-bCZSkW/lemon-graph/lemon/random.h:253:9: error: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
  253 |         register long num;
      |         ^~~~~~~~
2 errors generated.
gmake[2]: *** [lemon/CMakeFiles/lemon.dir/build.make:149: lemon/CMakeFiles/lemon.dir/random.cc.o] Error 1
gmake[2]: *** Waiting for unfinished jobs....
1 warning generated.
gmake[1]: *** [CMakeFiles/Makefile2:422: lemon/CMakeFiles/lemon.dir/all] Error 2
gmake: *** [Makefile:166: all] Error 2
[ERROR] Failed to execute: /home/uddhav/vsd/OpenROAD-flow-scripts/dependencies/bin/cmake --build build -j 8 --target install