diff options
Diffstat (limited to 'lib/default.nix')
| -rw-r--r-- | lib/default.nix | 180 |
1 files changed, 4 insertions, 176 deletions
diff --git a/lib/default.nix b/lib/default.nix index 8a6e7c1..f69ade0 100644 --- a/lib/default.nix +++ b/lib/default.nix @@ -1,178 +1,6 @@ -let - inherit - (builtins) - attrNames - concatStringsSep - hashFile - fetchurl - fromJSON - listToAttrs - mapAttrs - readDir - readFile - replaceStrings - toFile - toJSON - ; +final: prev: { + fetchPackwizModpack = final.callPackage ./fetchPackwizModpack.nix {}; - # loads data from a toml json given - # the directory (dir) and filename (name) - # string -> string -> attrset - fromMod = dir: name: fromTOML (readFile "${dir}/${name}"); - - # replaces `.pw.toml` extensions with `.jar` - # to correct the store paths of jarfiles - # string -> string - fixupName = replaceStrings [".pw.toml"] [".jar"]; - - # *pkgs*.fetchurl wrapper that downloads a - # jarfile mod. pkgs.fetchurl is used over builtins - # here since we have a checksum and can take advantage - # of fixed output derivations - # attrset -> string -> attrset -> store path - mkMod = pkgs: name: mod: - pkgs.fetchurl { - name = fixupName name; - inherit (mod) url sha256; - }; - - # maps each mod in our checksums.json format - # to the store path of a fixed output derivation - # attrset -> attrset - genMods = pkgs: - mapAttrs (mkMod pkgs); - - # this is probably what you're looking for if - # you're a developer trying to use this in your modpack. - # this is where you create a checksums file for end users - # to put into mkPackwizPackages, so make sure you keep it up to - # date! - # - # `dir` is a path to the folder containing your .pw.toml files - # files for mods. make sure they are the only files in the folder - # - # path -> file - mkChecksums = dir: let - mods = readDir dir; - - getChecksum = name: url: - hashFile "sha256" (fetchurl { - name = fixupName name; - inherit url; - }); - - toWrite = - toJSON - (mapAttrs (mod: _: let - data = fromMod dir mod; - in { - inherit (data.download) url; - sha256 = getChecksum mod data.download.url; - }) - mods); - in - toFile "checksums-json" toWrite; - - # this is probably what you're looking for if - # you're an end user trying to implement a modpack in - # your module. - # - # `pkgs` is an instance of nixpkgs for your system, - # must at least contain `fetchurl`. - # - # `checksums` is a json file from an upstream modpack - # containing the names, urls, and sha256sums of mods - # - # attrset -> path -> attrset - mkPackwizPackages = pkgs: checksums: genMods pkgs (fromJSON (readFile checksums)); -in { - inherit mkChecksums mkPackwizPackages; - - # this another function modpack developers will be looking - # for. it allows you to build a modpack compatible with MultiMC - # and Prism Launcher, containing external files. - # - # `pkgs` is an instance of nixpkgs with at least lib, runCommand, - # and zip - # - # `mods` is the result of mkPackwizPackages - # - # `filesDir` is the root path of all external files you want - # included in your zipped modpack - # - # `name` is a string containing the name of your modpack - mkMultiMCPack = { - pkgs, - mods, - filesDir ? "", - name, - }: let - inherit (pkgs) fetchurl lib runCommand zip; - inherit (lib) forEach; - - packwiz-installer-bootstrap = fetchurl { - url = "https://github.com/packwiz/packwiz-installer-bootstrap/releases/download/v0.0.3/packwiz-installer-bootstrap.jar"; - sha256 = "sha256-qPuyTcYEJ46X9GiOgtPZGjGLmO/AjV2/y8vKtkQ9EWw="; - }; - - forNames = attrset: forEach (attrNames attrset); - commandSep = concatStringsSep "; "; - modFiles = let - commands = forNames mods (mod: "cp -r ${mods.${mod}} $out/decompressed/.minecraft/mods/"); - in - commandSep commands; - - regularFiles = - if filesDir != "" - then - (let - files = readDir filesDir; - commands = forNames files (file: "cp -r ${filesDir}/${file} $out/decompressed/"); - in - commandSep commands) - else "echo 'not copying external files...'"; - in - runCommand name {} '' - mkdir -p $out/decompressed/.minecraft/mods - ${regularFiles} - ${modFiles} - cp ${packwiz-installer-bootstrap} $out/decompressed/.minecraft/packwiz-installer-bootstrap.jar - - cd $out/decompressed - ${zip}/bin/zip -r ../${name}.zip {*,.*} - ''; - - # this creates an `apps` attribute for a flake - # which runs a bash script to generate a checksums - # file - # - # `pkgs` is an instance of nixpkgs for your system, - # must at least contain `writeShellScriptBin` - # - # `dir` is a path to the folder containing your .pw.toml files - # files for mods. make sure they are the only files in the folder - # - # attrset -> path -> attrset - mkChecksumsApp = pkgs: dir: let - inherit (pkgs) writeShellScriptBin; - checksums = mkChecksums dir; - name = "generate-checksums"; - script = writeShellScriptBin name '' - cat ${checksums} > checksums.json - ''; - in { - type = "app"; - program = script.outPath + "/bin/${name}"; - }; - - # this creates an attrset value for - # minecraft-servers.servers.<server>.symlinks - # attrset -> attrset - mkModLinks = mods: let - fixup = map (name: { - name = "mods/" + fixupName name; - value = mods.${name}; - }) (attrNames mods); - in - listToAttrs fixup; + packwiz-installer-bootstrap = prev.callPackage ./packwiz-installer-bootstrap.nix {}; + packwiz-installer = prev.callPackage ./packwiz-installer.nix {}; } |