Issue #21457 has been updated by nobu (Nobuyoshi Nakada). Status changed from Open to Closed That gem file is generated only for the test. power_assert is the style to bump up its version at the beginning of the next release. https://github.com/ruby/power_assert/blob/ruby-3-5-style-set/lib/power_asser... So the generated gem has the different version than `gems/bundled_gems` file. ---------------------------------------- Bug #21457: Bundled gems - power_assert is not being installed https://bugs.ruby-lang.org/issues/21457#change-113862 * Author: MSP-Greg (Greg L) * Status: Closed * ruby -v: ruby -v: ruby 3.5.0dev (2025-06-28T11:17:35Z master 90abfe6fb7) +PRISM [x64-mingw-ucrt] * Backport: 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN ---------------------------------------- See https://github.com/ruby/ruby/actions/runs/15944248440/job/44976268400#step:8... ``` skipped bundled gems: power_assert-3.0.0dev.gem not found in bundled_gems syslog-0.3.0.gem extensions not found or build failed syslog-0.3.0 ``` -- https://bugs.ruby-lang.org/