From c37045ecf6db73cf5f805d7e7cddfa62fbd1240b Mon Sep 17 00:00:00 2001
From: Benoit Daloze <eregontp@gmail.com>
Date: Fri, 8 Jul 2022 14:34:50 +0200
Subject: [PATCH] GraalVM 22.2+ needs `gu install js` for JavaScript to be
 available

---
 .github/workflows/ci.yml      | 4 ++++
 lib/execjs/graaljs_runtime.rb | 1 +
 2 files changed, 5 insertions(+)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 26fb819..7a5bc80 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -29,6 +29,10 @@ jobs:
       - name: Set TRUFFLERUBYOPT
         run: echo "TRUFFLERUBYOPT=--jvm --polyglot" >> $GITHUB_ENV
         if: startsWith(matrix.ruby, 'truffleruby+graalvm')
+      - name: Install GraalVM js component
+        run: if ! gu list | grep '^js '; then gu install js; fi
+        if: startsWith(matrix.ruby, 'truffleruby+graalvm')
+
       - name: Run test
         run: rake
       - name: Install gem
diff --git a/lib/execjs/graaljs_runtime.rb b/lib/execjs/graaljs_runtime.rb
index acb931a..484f18f 100644
--- a/lib/execjs/graaljs_runtime.rb
+++ b/lib/execjs/graaljs_runtime.rb
@@ -136,6 +136,7 @@ module ExecJS
 
       unless Polyglot.languages.include? "js"
         warn "The language 'js' is not available, you likely need to `export TRUFFLERUBYOPT='--jvm --polyglot'`", uplevel: 0 if $VERBOSE
+        warn "You also need to install the 'js' component with 'gu install js' on GraalVM 22.2+", uplevel: 0 if $VERBOSE
         warn "Note that you need TruffleRuby+GraalVM and not just the TruffleRuby standalone to use #{self.class}", uplevel: 0 if $VERBOSE
         return @available = false
       end