Add Windows to the mix (#49)

src/install-otp.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+set -eo pipefail
+
+cd "$RUNNER_TEMP"
+
+OS=${1}
+VSN=${2}
+FILE_INPUT="${VSN}.tar.gz"
+FILE_OUTPUT=otp.tar.gz
+DIR_FOR_BIN=.setup-beam/otp
+
+rm -f "${FILE_OUTPUT}"
+rm -rf "${DIR_FOR_BIN}"
+wget -q -O "${FILE_OUTPUT}" "https://repo.hex.pm/builds/otp/${OS}/${FILE_INPUT}"
+mkdir -p "${DIR_FOR_BIN}"
+tar zxf "${FILE_OUTPUT}" -C "${DIR_FOR_BIN}" --strip-components=1
+rm -f "${FILE_OUTPUT}"
+"${DIR_FOR_BIN}/Install" -minimal "$(pwd)/${DIR_FOR_BIN}"
+echo "$(pwd)/${DIR_FOR_BIN}/bin" >> "$GITHUB_PATH"
+echo "Installed Erlang/OTP version follows"
+${DIR_FOR_BIN}/bin/erl -version