Часть гемов в rails не собирается

Создал новый, чистый проект Rails, по пытался установить туда devise и на шаге генерации:

rails g devise:install

Получаю кучу предупреждений об установленных, но не собранных гемах и сообщение об ошибке из-за их, якобы, отсутствия:

Ignoring bcrypt-3.1.18 because its extensions are not built. Try: gem pristine bcrypt --version 3.1.18

Ignoring bindex-0.8.1 because its extensions are not built. Try: gem pristine bindex --version 0.8.1

Ignoring bootsnap-1.13.0 because its extensions are not built. Try: gem pristine bootsnap --version 1.13.0

Ignoring debug-1.6.2 because its extensions are not built. Try: gem pristine debug --version 1.6.2

Ignoring ffi-1.15.5 because its extensions are not built. Try: gem pristine ffi --version 1.15.5

Ignoring msgpack-1.5.6 because its extensions are not built. Try: gem pristine msgpack --version 1.5.6

Ignoring puma-5.6.5 because its extensions are not built. Try: gem pristine puma --version 5.6.5

Ignoring sqlite3-1.4.4 because its extensions are not built. Try: gem pristine sqlite3 --version 1.4.4

Ignoring strscan-3.0.4 because its extensions are not built. Try: gem pristine strscan --version 3.0.4

Ignoring bcrypt-3.1.18 because its extensions are not built. Try: gem pristine bcrypt --version 3.1.18

Ignoring bindex-0.8.1 because its extensions are not built. Try: gem pristine bindex --version 0.8.1

Ignoring bootsnap-1.13.0 because its extensions are not built. Try: gem pristine bootsnap --version 1.13.0

Ignoring debug-1.6.2 because its extensions are not built. Try: gem pristine debug --version 1.6.2

Ignoring ffi-1.15.5 because its extensions are not built. Try: gem pristine ffi --version 1.15.5

Ignoring msgpack-1.5.6 because its extensions are not built. Try: gem pristine msgpack --version 1.5.6

Ignoring puma-5.6.5 because its extensions are not built. Try: gem pristine puma --version 5.6.5

Ignoring sqlite3-1.4.4 because its extensions are not built. Try: gem pristine sqlite3 --version 1.4.4

Ignoring strscan-3.0.4 because its extensions are not built. Try: gem pristine strscan --version 3.0.4

Could not find sqlite3-1.4.4, puma-5.6.5, bootsnap-1.13.0, debug-1.6.2, msgpack-1.5.6, ffi-1.15.5, bindex-0.8.1, bcrypt-3.1.18, strscan-3.0.4 in any of the sources

Run bundle install to install missing gems.

Пытаюсь исправить:

gem pristine --all

Ругается на отсутствие прав:

ERROR: While executing gem ... (Gem::FilePermissionError)

You don't have write permissions for the /usr/share/gems directory.

Повторяю от имени суперпользователя:

sudo gem pristine --all

Команда срабатывает, но не помогает. То же самое при использовании рекомендуемых команд, вроде:

gem pristine bcrypt --version 3.1.18

Срабатывают только от имени супераользователя и не дают никакого эффекта. Попробовал:

sudo rails g devise:install

Но, похоже, Rails стоит локально и из-под рута недоступен:

sudo: rails: command not found

С чем может быть проблема и как её поправить?