Can you please cut and paste the output? It is difficult to answer questions without knowing what you tried and what happened.

Here is a photo of my screen

@unknown0011248c90c3:~$ apt install fs-uae-arcade
[sudo] password for cj:
Solving dependencies... Error!
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

Unsatisfied dependencies:
fs-uae-arcade : Depends: python3-pyqt5 but it is not going to be installed
Depends: python3-pyqt5.qtopengl but it is not going to be installed
Depends: python3-setuptools but it is not going to be installed
Recommends: fs-uae-launcher but it is not installable
Recommends: python-lhafile but it is not installable
Error: Unable to satisfy dependencies. Reached two conflicting decisions:
1. python3-pyqt5:powerpc is selected for install because:
1. fs-uae-arcade:powerpc=3.1.63-2 is selected for install
2. fs-uae-arcade:powerpc Depends python3-pyqt5
2. python3-pyqt5:powerpc Depends qtbase-abi-5-15-15
but none of the choices are installable:
[no choices]

I had a look into it and the only advice I can give you is to wait a while. This is the disadvantage of running a distribution based on 'sid', the unstable branch. The problem will be solved by the packagers but it takes time. The package python3-pyqt5 should be rebuilt with a dependency on the newer package libqt5core5t64 instead of qtbase-abi-5-15-15.

Wait another month and try again. If it then still does not work, come back and I will try to find a solution.

@admin 

Thank you for all your help

You are able to install fs-uae now. I created all required dependencies. For that I fixed a bug in qttools-opensource-src[1].

1: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1119907

First I want to thank you for all your help. fs-uae is working. I like to know if you can get fs-uae-launcher to install? It is used to config fs-uae.

The launcher is no longer maintained in Debian. You could try and old version though:

https://download.opensuse.org/repositories/home:/FrodeSolheim:/stable/Debian_Testing/all/fs-uae-launcher_3.1.67-0_all.deb

EDIT: first see my next post, try the latest launcher I built today.

I built the latest launcher myself. I added fs-uae-launcher and fs-uae-arcade to the repo.

fs-uae-arcade_3.2.35-0
fs-uae-launcher_3.2.35-0

To install the launcher

sudo apt update
sudo apt install fs-uae-launcher

@admin When I tried to install fs-uae-launcher it said it was looking for python3-lhafile

It is not in the Debian archive either. I will build it.

@admin Thank you very much. 😊 

I will finish it in 20 minutes.

It's in the MintPPC32 repo now.