sudo apt-get install qt-creator
Reading Package Lists... Done
Building Dependency Tree... Done
The following extra packages will be installed:
  clang10.0-libs clang7.0-libs gcc-c++ gcc-c++-common gcc8-c++ libOpenGL libX11 libX11-devel
  libX11-locales libglvnd-devel libqt5-concurrent libqt5-designer libqt5-designercomponents
  libqt5-help libqt5-opengl libqt5-quickwidgets libqt5-script libqt5-test libstdc++8-devel
  libvulkan-devel libxcb-devel libxkbcommon-devel llvm10.0-libs llvm7.0-libs qt-creator-data
  qt5-base-devel qt5-quickcontrols qt5-script-common qt5-tools qt5-tools-common
  rpm-macros-qt5 xorg-proto-devel
The following packages will be upgraded
  libX11 libX11-locales
The following NEW packages will be installed:
  clang10.0-libs clang7.0-libs gcc-c++ gcc-c++-common gcc8-c++ libOpenGL libX11-devel
  libglvnd-devel libqt5-concurrent libqt5-designer libqt5-designercomponents libqt5-help
  libqt5-opengl libqt5-quickwidgets libqt5-script libqt5-test libstdc++8-devel
  libvulkan-devel libxcb-devel libxkbcommon-devel llvm10.0-libs llvm7.0-libs qt-creator
  qt-creator-data qt5-base-devel qt5-quickcontrols qt5-script-common qt5-tools
  qt5-tools-common rpm-macros-qt5 xorg-proto-devel
2 upgraded, 31 newly installed, 0 removed and 147 not upgraded.
Need to get 130MB of archives.
After unpacking 592MB of additional disk space will be used.
Do you want to continue? [Y/n] n
Abort.

Хотелось бы установить только среду разработки, без Qt5, X11 и прочих
-devel, которые я всё равно не буду использовать. В Qt Creator вполне
можно писать "обычный" C код (модули ядра, например).