112 lines
3.6 KiB
Nix
112 lines
3.6 KiB
Nix
{ lib, stdenv, fetchurl, busybox, coreutils, jre_headless, runtimeShell
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, mods ? null, modConfig ? null, defaultconfigs ? null }:
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let
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name = "forge-server";
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version = "1.16.5-36.2.2";
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mirror = "https://files.minecraftforge.net/maven/net/minecraftforge/forge";
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src = fetchurl {
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url = "${mirror}/${version}/forge-${version}-installer.jar";
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# Forge doesn't seem to like newer shas
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sha1 = "e97821e5431bdcaa46e12048769922e2cdb5e2e1";
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};
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unpackCmd = "mkdir -p src; cp $curSrc src/forge-${version}-installer.jar";
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nativeBuildInputs = [ jre_headless ];
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# Somewhat evil pre-install step to run through the network
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# dependency resolution forge needs. This is also common for gradle
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# projects, so I think this is ok-ish here, though ideally I'd
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# identify all the dependencies and package them as well.
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deps = stdenv.mkDerivation {
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name = "${name}-deps";
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inherit src unpackCmd nativeBuildInputs;
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buildPhase = ''
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java -jar forge-${version}-installer.jar --installServer installation
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'';
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installPhase = ''
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mkdir -p $out
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# The installer will patch the Minecraft server jar in some
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# fashion, and include it in "libraries". This'd be fine, if the
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# patch was bit-for-bit reproducible. Sadly it is not, so we
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# defer this to the *real* package build.
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rm -r installation/libraries/net/minecraft/
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cp -r installation/* $out
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'';
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outputHashAlgo = "sha256";
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outputHashMode = "recursive";
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outputHash = "VuUGc5JnzcRhDt9aaGrU+yUrJILVdU2vzv1PxLwdAig=";
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};
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in stdenv.mkDerivation rec {
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inherit name version src unpackCmd nativeBuildInputs;
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buildPhase = ''
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mkdir -p installation
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# Take the input deps and patch the Minecraft server jar into our
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# libraries to create the package.
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cp -rv ${deps}/* installation/
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chmod -R +w installation/
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java -jar forge-${version}-installer.jar --offline --installServer installation/
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'';
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installPhase = ''
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mkdir -p $out/{bin,lib/forge}
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cp -r installation/{forge-${version}.jar,libraries} $out/lib/forge/
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cat > $out/bin/forge-server << EOF
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#!${runtimeShell}
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set -eu
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# Delete any previous mods directory so that it can be updated
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${busybox}/bin/rm -fr mods
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${lib.optionalString (mods != null) ''
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# Copy the specified mods into the directory. Note that, sadly,
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# forge doesn't support symlinks here.
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${busybox}/bin/mkdir -p mods
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${busybox}/bin/cp -r '${mods}/mods/'*.jar mods
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''}
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# Delete any previous config directories so that they can be updated
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${busybox}/bin/rm -fr config defaultconfigs
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${lib.optionalString (modConfig != null) ''
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# Copy the specified configs into the directory. Forge (and
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# mods) will try to write here, so we cannot symlink.
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${busybox}/bin/mkdir -p config
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${busybox}/bin/cp -r '${modConfig}'/* config
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${busybox}/bin/chmod -R u+w config
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''}
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${lib.optionalString (defaultconfigs != null) ''
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# Copy the specified configs into the directory. Forge (and
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# mods) will try to write here, so we cannot symlink.
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${busybox}/bin/mkdir -p defaultconfigs
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${busybox}/bin/cp -r '${defaultconfigs}'/* defaultconfigs
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${busybox}/bin/chmod -R u+w defaultconfigs
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''}
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exec ${jre_headless}/bin/java \$@ -jar $out'/lib/forge/forge-${version}.jar' nogui
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EOF
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chmod +x $out/bin/forge-server
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'';
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meta = with lib; {
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description = "Forge Minecraft Server";
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homepage = "https://files.minecraftforge.net/";
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# Forge itself is open source, but this package pulls in
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# minecraft.
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license = licenses.unfreeRedistributable;
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platforms = platforms.unix;
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};
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}
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