# an overlay to let tag = "2023.12"; in final: prev: { wishbone-tool = prev.callPackage (import ./wishbone-tool.nix) { }; pythonPackagesExtensions = prev.pythonPackagesExtensions ++ [ (python-final: python-prev: { litex = python-final.callPackage (import ./litex.nix tag) { }; litedram = python-final.callPackage (import ./litedram.nix tag) { }; liteeth = python-final.callPackage (import ./liteeth.nix tag) { }; litescope = python-final.callPackage (import ./litescope.nix tag) { }; litespi = python-final.callPackage (import ./litespi.nix tag) { }; liteiclink = python-final.callPackage (import ./liteiclink.nix tag) { }; pythondata-cpu-vexriscv = python-final.callPackage (import ./pythondata-cpu-vexriscv.nix tag) { }; pythondata-software-compiler_rt = python-final.callPackage (import ./pythondata-software-compiler_rt.nix tag) { }; pythondata-software-picolibc = python-final.callPackage (import ./pythondata-software-picolibc.nix tag) { }; }) ]; }