add piston nix pkg for groovy

packages/groovy/3.0.7/build.sh

@@ -1,14 +0,0 @@
-#!/bin/bash
-
-# Groovy depends on JDK8+
-mkdir -p java
-cd java
-curl "https://download.java.net/java/GA/jdk15.0.2/0d1cfde4252546c6931946de8db48ee2/7/GPL/openjdk-15.0.2_linux-x64_bin.tar.gz" -o java.tar.gz
-tar xzf java.tar.gz --strip-components=1
-rm java.tar.gz
-cd ..
-
-# Download Groovy binaries
-curl -L "https://groovy.jfrog.io/artifactory/dist-release-local/groovy-zips/apache-groovy-binary-3.0.7.zip" -o groovy.zip
-unzip -q groovy.zip
-rm groovy.zip

packages/groovy/3.0.7/compile

@@ -1,17 +0,0 @@
-#!/bin/bash
-
-# Compile groovy scripts into a separate "classes" directory
-# NOTE: - Main file MUST be a groovy script 
-#       - not supporting object class entry points as of now
-groovyc -d classes "$@"
-
-# Create the Manifest and include groovy jars:
-# NOTE: - main class will be the first file ('.' becomes '_' and without the extension)
-#       - groovy lib jars MUST be in the class path in order to work properly
-echo "Main-Class: $(sed 's/\./\_/g'<<<${1%.*})
-Class-Path:  $(echo $GROOVY_HOME/lib/*.jar | sed 's/\s/\n  /g')
-
-" > manifest.txt
-
-# Create the jar from the manifest and classes
-jar cfm out.jar manifest.txt -C classes .

packages/groovy/3.0.7/environment

@@ -1,10 +0,0 @@
-#!/bin/bash
-
-# Groovy requires JAVA_HOME to be set
-export JAVA_HOME=$PWD/java
-
-# GROOVY_HOME needed to get the groovy libs
-export GROOVY_HOME=$PWD/groovy-3.0.7
-
-# Add java and groovy binaries to the path
-export PATH=$PWD/java/bin:$PWD/groovy-3.0.7/bin:$PATH

packages/groovy/3.0.7/metadata.json

@@ -1,5 +0,0 @@
-{
-    "language": "groovy",
-    "version": "3.0.7",
-    "aliases": ["groovy", "gvy"]
-}

packages/groovy/3.0.7/run

@@ -1,5 +0,0 @@
-#!/bin/bash
-
-# Run the jar created during compile
-shift
-java -jar out.jar "$@"

packages/groovy/3.0.7/test.groovy

@@ -1 +0,0 @@
-println 'OK'