Allow custom vendored Ruby URL (#1406)

* Allow custom vendored Ruby URL Lets us provide our own custom set of vendored Ruby runtimes. Currently in use on our fork of this repo, but we'd like to merge it upstream. Fixes #1164. * Changelog * Correct changelog PR URL --------- Co-authored-by: Schneems <[email protected]> Co-authored-by: Ed Morley <[email protected]>
heroku · Dec 6, 2023 · 9dc8ea4 · 9dc8ea4
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ## Main (unreleased)
 
+- Fix BUILDPACK_VENDOR_URL support (https://github.com/heroku/heroku-buildpack-ruby/pull/1406)
+
 ## v262 (2023/11/08)
 
 - Warn when relying on default Node.js or Yarn versions (https://github.com/heroku/heroku-buildpack-ruby/pull/1401)

diff --git a/bin/support/download_ruby b/bin/support/download_ruby
@@ -26,7 +26,7 @@ curl_retry_on_18() {
 regex=".*ruby_version = [\'\"]([0-9]+\.[0-9]+\.[0-9]+)[\'\"].*"
 if [[ $(cat "$BIN_DIR/../buildpack.toml") =~ $regex ]]
   then
-    heroku_buildpack_ruby_url="https://heroku-buildpack-ruby.s3.us-east-1.amazonaws.com/$STACK/ruby-${BASH_REMATCH[1]}.tgz"
+    heroku_buildpack_ruby_url="${BUILDPACK_VENDOR_URL:-https://heroku-buildpack-ruby.s3.us-east-1.amazonaws.com}/$STACK/ruby-${BASH_REMATCH[1]}.tgz"
   else
     echo "Could not detect ruby version to bootstrap"
     exit 1