Abandonware?!?
I have to interject here. I know the easy install script (install.py) is not always the best working answer, but it is certainly not abandonware. It is actively updated every week.
The problems associated with using the easy install method are varied and constantly changing through no fault of the script itself.
The easy install script uses a playbook method of installing all of the necessary components to get an operational system. The playbook package itself is another open source 3rd party code set that is NOT maintained by the Frappe-ERPNext team. IT is maintained by it’s own development project. It is also frequently updated very much like ERPNext is updated. Sometimes those updates interfere with the smooth operation of the ERPNext installation. When that happens, our Frappe developers have to spend valuable volunteer time to dig into code they didn’t write to try and figure out how to get the installation process to work again.
If that isn’t enough… Almost every aspect of the frappe-erpnext systems are built from, or rely on other 3rd party open source projects in order to function. Packages like git, curl, yarn, redis, ansible, and wkhtmltopdf are all required to get a functional frappe/erpnext system and yet every one of them are open source projects themselves that are independently run by their own communities. Each of those independent projects also release updates and changes which sometimes causes our installs to fail.
I acknowledge that the easy install methods may not get nearly enough testing time, but it is certainly not to blame for all of the apparent failures to install. The developers of frappe/erpnext cannot police the code of every package they use to build their own project.
One final note on Hitchhikers Guide…
It is also full or errors! It is not updated very often and it references very old package versions that are either no longer available or otherwise obsolete. It is also NOT written for the non-coder/non-developer users that are experiencing the most difficulties with installs. The only people that can get any help from the Hitchhikers Guide are other developers or coders that can see the packages and already understand the significance of each block of the install. They can already understand what needs to be changed in the text. Makes you wonder why none of those people that push the guide ever go back and fix the text. After all it is also an open source text. 
So, if you find problems with the easy install method, there is also another (better explained) set of manual steps that can help even the novice user get a successful installation. Try this:
So to @Vesper_Solutions I do not believe it is fair to call the easy install method abandonware just yet. The fact that is doesn’t always work is why we have this community. We help each other with work-arounds for such problems when we can.
BKM