fixing for review

Author: graham jenson

examples/simple_script/WORKSPACE

@@ -27,4 +27,5 @@ bundle_install(
     name = "bundle",
     gemfile = "//:Gemfile",
     gemfile_lock = "//:Gemfile.lock",
+    version = "2.0.2",
 )

ruby/private/bundle/bundle.bzl

@@ -1,8 +1,6 @@
 load("//ruby/private:constants.bzl", "RULES_RUBY_WORKSPACE_NAME")
 
-_DEFAULT_VERSION = "2.0.2"
-
-def install_bundler(ctx, interpreter, install_bundler, dest, version = _DEFAULT_VERSION):
+def install_bundler(ctx, interpreter, install_bundler, dest, version):
     args = ["env", "-i", interpreter, install_bundler, version, dest]
     environment = {"RUBYOPT": "--disable-gems"}
 
@@ -32,6 +30,7 @@ def bundle_install_impl(ctx):
         interpreter_path,
         "install_bundler.rb",
         "bundler",
+        ctx.attr.version,
     )
 
     bundler = Label("//:bundler/exe/bundler")
@@ -108,6 +107,9 @@ bundle_install = repository_rule(
         "gemfile_lock": attr.label(
             allow_single_file = True,
         ),
+        "version": attr.string(
+            default = "2.0.2",
+        ),
         "gemspec": attr.label(
             allow_single_file = True,
         ),

ruby/private/bundle/gem_install.bzl

@@ -13,7 +13,7 @@ def ruby_register_toolchains(version = "host"):
             version = version,
         )
     else:
-        fail("unknown ruby version in `ruby_register_toolchains`")
+        fail("unsupported ruby version in `ruby_register_toolchains`")
 
     native.register_toolchains(
         "@org_ruby_lang_ruby_toolchain//:toolchain",