Using Geant4 with Nix

Question:
I am writing a Geant4 program on Replit and saw that this framework is available via Nix. I have added a related package to the replit.nix file and the compilation with geant4-config included in the makefile works well. However, I am unsure how to access the datasets in that package, since I cannot find it. As a result, running the programs leads to some error messages to the missing datasets. Is there any easy way to fix this issue without installing the data manually in my repository?

Repl link/Link to where the bug appears:
https://replit.com/@MustafaSchmidt1/PETSim

Screenshots, links, or other helpful context:
Modification of replit.nix

{ pkgs }: {
	deps = [
   pkgs.vim
		pkgs.clang_12
		pkgs.ccls
		pkgs.gdb
		pkgs.gnumake
    pkgs.geant4
	];
}