[Lazarus] Fppkg reports RTL not installed - Lazarus 2.2.4/fpc 3.2.2 from sources on Ubuntu

[Bo Berglund]

The below is from an Ubuntu 20.04.5 LTS with Mate Desktop on an HP workstation
laptop.

I have retrieved the tagged release sources for fpc 3.2.2 and Lazarus 2.2.4 from
gitlab and built the compiler and IDE on the command line.

When I start the Lazarus IDE I get to the dialog "Welcome to Lazarus IDE 2.2.4"
where all is well and dandy *EXCEPT* the last tab Fppkg...
What it says is this:

-------------------
File: /home/bosse/.config/fppkg.cfg

Error: there is a problem with the Fppkg configuration. (Fppkg reports that the
RTL is not installed.)

You could try to restore the configuration files automatically, or adapt the
configuration file manually.
--------------------

In the root of $HOME I have files fppkg.cfg, fppkg.bak, .fpc.cfg and directory
fppkg/

This machine also has an older version of Lazarus (2.0.12) with fpc 3.2.0, which
runs just fine without this noise about fppkg.

The same thing regarding fppkg happens on Windows 10 with Lazarus 2.2.4
installed using the official installer downloaded from Sourceforge.

What does this mean?

I have never seen this before in my many years of Lazarus usage...

And what should I do to rectify it?


-- 
Bo Berglund
Developer in Sweden