forge-server: Fix issues caused by the installer's reproducibility
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.
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@ -13,34 +13,55 @@ let
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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 = "${name}-deps";
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inherit src unpackCmd;
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inherit src unpackCmd nativeBuildInputs;
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nativeBuildInputs = [ jre_headless ];
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buildPhase = ''
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java -jar forge-${version}-installer.jar --installServer installation
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'';
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installPhase = ''
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mkdir -p $out
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cp -r installation/forge-${version}.jar installation/libraries $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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# The forge installer also insists on re-creating this file.
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rm installation/libraries/de/oceanlabs/mcp/mcp_config/*/mcp_config-*-mappings.txt
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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 = "lV4UxmSdv/I+HwvnT8CLcHpSKyDvKnldA5/Lw1GsJ/M=";
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outputHash = "ZRU9ytoF1BXRQ4hx2ehPgqan6vX4l2yomzNDOOWdm0Q=";
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};
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in stdenv.mkDerivation rec {
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inherit name version src unpackCmd;
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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 ${deps}/* installation/
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java -jar forge-${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 -rv ${deps}/* $out/lib/forge/
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cp -r installation/{forge-${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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@ -81,8 +102,6 @@ in stdenv.mkDerivation rec {
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chmod +x $out/bin/forge-server
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'';
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phases = "installPhase";
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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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