From 7b728b73d09ae43c4abe79b9830ff062fbb016c2 Mon Sep 17 00:00:00 2001
From: Denis Kulicek <denis.kulicek@gmail.com>
Date: Thu, 29 Oct 2020 14:27:52 +0100
Subject: [PATCH] Add experimental-otp input opt-in flag

---
 dist/index.js       | 8 ++++++--
 src/setup-elixir.js | 8 ++++++--
 2 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/dist/index.js b/dist/index.js
index 724995d..5cf9a60 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -3321,13 +3321,17 @@ async function main() {
     elixirSpec,
     otpVersion
   )
-  const osVersion = getOSVersion()
 
   let installHex = core.getInput('install-hex')
   installHex = installHex == null ? 'true' : installHex
+
   let installRebar = core.getInput('install-rebar')
   installRebar = installRebar == null ? 'true' : installRebar
 
+  const experimentalOTP = core.getInput('experimental-otp')
+  const osVersion =
+    experimentalOTP === 'true' ? getRunnerOSVersion() : 'ubuntu-14.04'
+
   console.log(`##[group]Installing OTP ${otpVersion} - built on ${osVersion}`)
   await installOTP(otpVersion, osVersion)
   console.log(`##[endgroup]`)
@@ -3359,7 +3363,7 @@ async function getOtpVersion(spec) {
   return getVersionFromSpec(spec, await getOtpVersions()) || spec
 }
 
-function getOSVersion() {
+function getRunnerOSVersion(experimentalOTP) {
   const mapToUbuntuVersion = {
     ubuntu16: 'ubuntu-16.04',
     ubuntu18: 'ubuntu-18.04',
diff --git a/src/setup-elixir.js b/src/setup-elixir.js
index b896d7e..c1046c4 100644
--- a/src/setup-elixir.js
+++ b/src/setup-elixir.js
@@ -23,13 +23,17 @@ async function main() {
     elixirSpec,
     otpVersion
   )
-  const osVersion = getOSVersion()
 
   let installHex = core.getInput('install-hex')
   installHex = installHex == null ? 'true' : installHex
+
   let installRebar = core.getInput('install-rebar')
   installRebar = installRebar == null ? 'true' : installRebar
 
+  const experimentalOTP = core.getInput('experimental-otp')
+  const osVersion =
+    experimentalOTP === 'true' ? getRunnerOSVersion() : 'ubuntu-14.04'
+
   console.log(`##[group]Installing OTP ${otpVersion} - built on ${osVersion}`)
   await installOTP(otpVersion, osVersion)
   console.log(`##[endgroup]`)
@@ -61,7 +65,7 @@ async function getOtpVersion(spec) {
   return getVersionFromSpec(spec, await getOtpVersions()) || spec
 }
 
-function getOSVersion() {
+function getRunnerOSVersion(experimentalOTP) {
   const mapToUbuntuVersion = {
     ubuntu16: 'ubuntu-16.04',
     ubuntu18: 'ubuntu-18.04',