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forge-server: Fix issues caused by the installer's reproducibility

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This seems to mostly be due to mcpatcher patches being not quite
bit-for-bit reproducible. Oh well, at least this derivation should
work now.
This commit is contained in:
Tristan Daniël Maat 2021-04-25 21:06:07 +01:00
parent 71d783ec11
commit c3aea6e305
Signed by: tlater
GPG key ID: 49670FD774E43268
1 changed files with 27 additions and 8 deletions
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35
pkgs/minecraft/forge-server.nix
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@ -13,34 +13,55 @@ let
unpackCmd = "mkdir -p src; cp $curSrc src/forge-${version}-installer.jar"; unpackCmd = "mkdir -p src; cp $curSrc src/forge-${version}-installer.jar";
nativeBuildInputs = [ jre_headless ];
# Somewhat evil pre-install step to run through the network # Somewhat evil pre-install step to run through the network
# dependency resolution forge needs. This is also common for gradle # dependency resolution forge needs. This is also common for gradle
# projects, so I think this is ok-ish here, though ideally I'd # projects, so I think this is ok-ish here, though ideally I'd
# identify all the dependencies and package them as well. # identify all the dependencies and package them as well.
deps = stdenv.mkDerivation { deps = stdenv.mkDerivation {
name = "${name}-deps"; name = "${name}-deps";
inherit src unpackCmd; inherit src unpackCmd nativeBuildInputs;
nativeBuildInputs = [ jre_headless ];
buildPhase = '' buildPhase = ''
java -jar forge-${version}-installer.jar --installServer installation java -jar forge-${version}-installer.jar --installServer installation
''; '';
installPhase = '' installPhase = ''
mkdir -p $out mkdir -p $out
cp -r installation/forge-${version}.jar installation/libraries $out
# The installer will patch the Minecraft server jar in some
# fashion, and include it in "libraries". This'd be fine, if the
# patch was bit-for-bit reproducible. Sadly it is not, so we
# defer this to the *real* package build.
rm -r installation/libraries/net/minecraft/
# The forge installer also insists on re-creating this file.
rm installation/libraries/de/oceanlabs/mcp/mcp_config/*/mcp_config-*-mappings.txt
cp -r installation/* $out
''; '';
outputHashAlgo = "sha256"; outputHashAlgo = "sha256";
outputHashMode = "recursive"; outputHashMode = "recursive";
outputHash = "lV4UxmSdv/I+HwvnT8CLcHpSKyDvKnldA5/Lw1GsJ/M="; outputHash = "ZRU9ytoF1BXRQ4hx2ehPgqan6vX4l2yomzNDOOWdm0Q=";
}; };
in stdenv.mkDerivation rec { in stdenv.mkDerivation rec {
inherit name version src unpackCmd; inherit name version src unpackCmd nativeBuildInputs;
buildPhase = ''
mkdir -p installation
# Take the input deps and patch the Minecraft server jar into our
# libraries to create the package.
cp -rv ${deps}/* installation/
java -jar forge-${version}-installer.jar --offline --installServer installation/
'';
installPhase = '' installPhase = ''
mkdir -p $out/{bin,lib/forge} mkdir -p $out/{bin,lib/forge}
cp -rv ${deps}/* $out/lib/forge/
cp -r installation/{forge-${version}.jar,libraries} $out/lib/forge/
cat > $out/bin/forge-server << EOF cat > $out/bin/forge-server << EOF
#!${runtimeShell} #!${runtimeShell}
@ -81,8 +102,6 @@ in stdenv.mkDerivation rec {
chmod +x $out/bin/forge-server chmod +x $out/bin/forge-server
''; '';
phases = "installPhase";
meta = with lib; { meta = with lib; {
description = "Forge Minecraft Server"; description = "Forge Minecraft Server";
homepage = "https://files.minecraftforge.net/"; homepage = "https://files.minecraftforge.net/";