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{ stdenv, fetchurl, unzip, ant, jdk, makeWrapper }:
let
version = "3.7.2";
date = "201202080800";
in
stdenv.mkDerivation rec {
name = "ecj-${version}";
src = fetchurl {
url = "http://eclipse.ialto.org/eclipse/downloads/drops/R-${version}-${date}/ecjsrc-${version}.jar";
sha256 = "0swyysbyfmv068x8q1c5jqpwk5zb4xahg17aypx5rwb660f8fpbm";
};
buildInputs = [ unzip ant jdk makeWrapper ];
unpackPhase = ''
mkdir "${name}"
cd "${name}"
unzip "$src"
'';
# Use whatever compiler Ant knows.
buildPhase = "ant build";
installPhase = ''
mkdir -pv $out/share/java
cp -v *.jar $out/share/java
mkdir -pv $out/bin
makeWrapper ${jdk.jre}/bin/java $out/bin/ecj \
--add-flags "-cp $out/share/java/ecj.jar org.eclipse.jdt.internal.compiler.batch.Main"
# Add a setup hook that causes Ant to use the ECJ.
mkdir -p $out/nix-support
cat <<EOF > $out/nix-support/setup-hook
export NIX_ANT_ARGS="-Dbuild.compiler=org.eclipse.jdt.core.JDTCompilerAdapter \$NIX_ANT_ARGS"
EOF
'';
meta = {
description = "The Eclipse Compiler for Java (ECJ)";
longDescription = ''
ECJ is an incremental Java compiler. Implemented as an Eclipse
builder, it is based on technology evolved from VisualAge for Java
compiler. In particular, it allows users to run and debug code which
still contains unresolved errors.
'';
homepage = http://www.eclipse.org/jdt/core/index.php;
# http://www.eclipse.org/legal/epl-v10.html (free software, copyleft)
license = "EPLv1.0";
platforms = stdenv.lib.platforms.linux;
};
}
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