pkg(pony-0.39.0): Add pony-lang 0.39.0 (#194)

* pkg(pony-0.39.0): Add pony-lang 0.39.0

* pkg(pony-0.39.0): Use `git submodule` to install llvm and get the source through cloning.

* pkg(pony-0.39.0): Reset to 0.39.0 commit and cd into `ponyc`

* pkg(pony-0.39.0): User proper installation instructions, like specified in the installation guide

* pkg(pony-0.39.0): Setup compile script.

* pkg(pony-0.39.0): Properly delete the build dir.

* pkg(pony-0.39.0): Get rid of author key in metdata

* pkg(pony-0.39.0): `CD` into `ponyc` right before cloning.

* pkg(ponyc-0.39.0): Move `cd` to the correct palce.

packages/ponylang/0.39.0/build.sh

@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+
+PREFIX=$(realpath $(dirname $0))
+
+# get sources - only get the latest copy of the relevant files
+git clone -q https://github.com/ponylang/ponyc.git ponyc
+
+cd ponyc
+
+# release commit for 0.39.0
+git reset --hard 85d897b978c5082a1f3264a3a9ad479446d73984
+
+# updates all submodules recursively along their tracking branches
+# i.e. https://github.com/ponylang/ponyc/blob/main/.gitmodules
+git submodule update --recursive --init
+
+# Build the vendored LLVM libraries that are included in the `lib/llvm/src`.
+make libs build_flags="-j$(nproc)"
+# Configure the CMake build directory.
+make configure
+# Will build pony and put it in `build/release`.
+make build
+# Install pony into `$PREFIX`.
+make prefix="$PREFIX" install
+
+cd ..
+rm -rf ponyc