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if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
source $stdenv/setup
tar zxvf $src
cd antlr-*
cd lib
mkdir -p $out/lib/antlr
mkdir -p $out/bin
cp *.jar $out/lib/antlr
classpath=""
for jar in $out/lib/antlr/*.jar; do
classpath="$classpath:$jar"
done
cat > $out/bin/antlr <<EOF
#! $SHELL
$jre/bin/java -cp $classpath -Xms200M -Xmx400M org.antlr.Tool \$*
EOF
chmod u+x $out/bin/antlr
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