archinstall VS release

In any case, have you studied https://wiki.archlinux.org/title/Archinstall and https://github.com/archlinux/archinstall. While archinstall is new and has the expected bugs, I've not had your issues before. You might try an earlier ISO, like Oct 2023, though it's not clear if you're using an ISO or the archinstall installed package.

I'm using my laptop as dual boot between Manjaro and Windows 10, I tried for months to install ArchLinux using archinstall tool but the operation always fails with random errors, because I want to install it on a single ext4 partition like how Manjaro is installed. Is there any trusted GUI installer that uses calamares and can install pure ArchLinux ?

The related issue https://github.com/archlinux/archinstall/issues/1111 implies it's fixed, but either way, you can just securely delete your password after the install.

Mount that partition as /efi. Change this in your /etc/fstab as well. This is a good time to remove all the weird carriage returns that archinstall puts in your fstab file (https://github.com/archlinux/archinstall/issues/1399).

Most distros have a nice graphical installer which does make things less of a hassle. But these days Arch also bundles archinstall which is quite easy to use and supports a few display environments for automatic setup right out the gate which is nice.

Or just use archinstall which is official part of the iso file.

You can post an issue at: https://github.com/archlinux/archinstall to get the attention of the developer. He's represented here but I forget his user id.

If you're still suffering with this problem: Maybe try to find the file/module on your system. If it's present, you might want to try to run this pacman -Sy python archinstall (found it here: https://github.com/archlinux/archinstall/issues/1810) to reinstall python and the archinstall script. I hope that this helps you.

Still feels that it is in rapid development phase, rather than just maintenance, last month I encountered this bug

The image above represents an error I ran into while building Potabi on Sept-9, 2021. The build is currently supposed to be using the RE Base release b_1.0a-base, the files of which are listed below. For testing purposes, I grabbed the RE Base b_1.0a-base disc1.iso file, as listed in the release. I ran it in QEMU on my personal machine, where the difference in bases between here and on the FreeBSD virtual machine being used for builds should be non-existent. Since I am coming back into development a month after I last did anything, I cannot say with any certainty that this will provide anything useful, but on The Potabi Foundation YouTube Channel, I uploaded a timelapse of this build for fun, not even trying to use it to help debug anything. It shows no issue, as far as I can tell.