From 5ee28d918a8945224563bdfed293a0ff4b6e5757 Mon Sep 17 00:00:00 2001
From: Dan Vargas <danvargas46@gmail.com>
Date: Mon, 31 Jan 2022 19:35:06 -0700
Subject: [PATCH] add ruby 3.1.0

---
 runtimes/default.nix |  1 +
 runtimes/ruby.nix    | 57 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 58 insertions(+)
 create mode 100644 runtimes/ruby.nix

diff --git a/runtimes/default.nix b/runtimes/default.nix
index bfc0e2a..dbf454c 100644
--- a/runtimes/default.nix
+++ b/runtimes/default.nix
@@ -14,4 +14,5 @@ args: {
     "erlang" = import ./erlang.nix args;
     "gawk-awk" = import ./gawk-awk.nix args;
     "openjdk11_headless-java" = import ./openjdk11_headless-java.nix args;
+    "ruby" = import ./ruby.nix args;
 }
diff --git a/runtimes/ruby.nix b/runtimes/ruby.nix
new file mode 100644
index 0000000..6673222
--- /dev/null
+++ b/runtimes/ruby.nix
@@ -0,0 +1,57 @@
+{pkgs, piston, ...}:
+let 
+    pkg = pkgs.ruby_3_1; # ruby 3.1 stable from unstable channel
+in piston.mkRuntime {
+    language = "ruby";
+    version = pkg.version;
+
+    aliases = [
+        "ruby3"
+        "rb"
+    ];
+
+    run = ''
+    ${pkg}/bin/ruby "$@"
+    '';
+
+    # Run the following command to test the package:
+    # $ ./piston test ruby
+    tests = [
+        # standard output test
+        (piston.mkTest {
+            files = {
+                "test.rb" = ''
+                    puts("OK");
+                '';
+            };
+            args = [];
+            stdin = "";
+            packages = [];
+            main = "test.rb";
+        })
+        # args test
+        (piston.mkTest {
+            files = {
+                "test.rb" = ''
+                    puts $*;
+                '';
+            };
+            args = ["OK"];
+            stdin = "";
+            packages = [];
+            main = "test.rb";
+        })
+        # stdin test
+        (piston.mkTest {
+            files = {
+                "test.rb" = ''
+                    print Kernel.gets;
+                '';
+            };
+            args = [];
+            stdin = "OK";
+            packages = [];
+            main = "test.rb";
+        })
+    ];
+}
\ No newline at end of file