How to download and setup typelevel-nix
Open terminal and run command
                                            git clone https://github.com/typelevel/typelevel-nix.git
                                        
                                        git clone is used to create a copy or clone of typelevel-nix repositories.
                                        You pass git clone a repository URL. it supports a few different network protocols and corresponding URL formats.
Also you may download zip file with typelevel-nix https://github.com/typelevel/typelevel-nix/archive/master.zip
Or simply clone typelevel-nix with SSH
                                            [email protected]:typelevel/typelevel-nix.git                                    
                                    If you have some problems with typelevel-nix
You may open issue on typelevel-nix support forum (system) here: https://github.com/typelevel/typelevel-nix/issuesSimilar to typelevel-nix repositories
Here you may see typelevel-nix alternatives and analogs
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