Anyone who has manually installed a massive component suite like DevExpress VCL knows the pain. You must close the IDE, run the installer, wait for 100+ packages to compile, manually add source paths, and then repeat for each version of Delphi you support (e.g., Delphi 2007, Delphi XE7, Delphi 10 Seattle). A single misstep could lead to "Fatal: F2051 Unit XXX was compiled with a different version of YYY."
This version was a significant milestone for developers using RAD Studio DevExpress VCL 15.2.2 with DxAutoInstaller 2.1.5