Remove use of 'rvm-download' rbenv plugin

pre_commit/languages/ruby.py

@@ -91,7 +91,6 @@ def _install_rbenv(
     # Only install ruby-build if the version is specified
     if version != C.DEFAULT:
         plugins_dir = os.path.join(envdir, 'plugins')
-        _extract_resource('ruby-download.tar.gz', plugins_dir)
         _extract_resource('ruby-build.tar.gz', plugins_dir)
 
 
@@ -99,11 +98,8 @@ def _install_ruby(
         prefix: Prefix,
         version: str,
 ) -> None:  # pragma: win32 no cover
-    try:
-        helpers.run_setup_cmd(prefix, ('rbenv', 'download', version))
-    except CalledProcessError:  # pragma: no cover (usually find with download)
-        # Failed to download from mirror for some reason, build it instead
-        helpers.run_setup_cmd(prefix, ('rbenv', 'install', version))
+    # build from source using rbenv + ruby-build
+    helpers.run_setup_cmd(prefix, ('rbenv', 'install', version))
 
 
 def install_environment(

testing/make-archives

@@ -18,11 +18,6 @@ from typing import Sequence
 REPOS = (
     ('rbenv', 'https://github.com/rbenv/rbenv', '38e1fbb'),
     ('ruby-build', 'https://github.com/rbenv/ruby-build', '9d92a69'),
-    (
-        'ruby-download',
-        'https://github.com/garnieretienne/rvm-download',
-        '09bd7c6',
-    ),
 )
 
 

tests/languages/ruby_test.py

@@ -37,7 +37,7 @@ def test_uses_system_if_both_gem_and_ruby_are_available(find_exe_mck):
 
 @pytest.mark.parametrize(
     'filename',
-    ('rbenv.tar.gz', 'ruby-build.tar.gz', 'ruby-download.tar.gz'),
+    ('rbenv.tar.gz', 'ruby-build.tar.gz'),
 )
 def test_archive_root_stat(filename):
     with resource_bytesio(filename) as f: