{ lib, libretro, makeBinaryWrapper, retroarch-bare, runCommand, symlinkJoin, cores ? [ ], settings ? { }, }: let settingsPath = runCommand "declarative-retroarch.cfg" { value = lib.concatStringsSep "\n" (lib.mapAttrsToList (n: v: "${n} = \"${v}\"") settings); passAsFile = [ "value" ]; } '' cp "$valuePath" "$out" ''; # All cores should be located in the same path after symlinkJoin, # but let's be safe here coresPath = lib.lists.unique (map (c: c.libretroCore) cores); wrapperArgs = lib.strings.escapeShellArgs ( (lib.lists.flatten ( map (p: [ "--add-flags" "-L ${placeholder "out" + p}" ]) coresPath )) ++ [ "--add-flags" "--appendconfig=${settingsPath}" ] ); in symlinkJoin { name = "retroarch-with-cores-${lib.getVersion retroarch-bare}"; paths = [ retroarch-bare ] ++ cores; nativeBuildInputs = [ makeBinaryWrapper ]; passthru = { inherit cores; unwrapped = retroarch-bare; withCores = coreFun: retroarch-bare.wrapper { cores = (coreFun libretro); }; }; postBuild = '' # remove core specific binaries find $out/bin -name 'retroarch-*' -type l -delete # wrap binary to load cores from the proper location(s) wrapProgram $out/bin/retroarch ${wrapperArgs} ''; meta = { inherit (retroarch-bare.meta) changelog description homepage license mainProgram maintainers teams platforms ; longDescription = '' RetroArch is the reference frontend for the libretro API. '' + lib.optionalString (cores != [ ]) '' The following cores are included: ${lib.concatStringsSep ", " (map (c: c.core) cores)}. ''; }; }