I wonder if Xcode 10.1 and the Command Line Tools for Xcode 10.1 (mac OS HighSierra) interfare with each other? Is there an suggested installation order? Or does it not matter? After xip -x and open Xcode, it start installing some components and the Command Line Tools installer runs some package scripts. Don't know which is better to install first.
From the Xcode 10 release notes:
Command Line Tools
New Features
The Command Line Tools package installs the macOS system headers inside the macOS SDK. Software that compiles with the installed tools will search for headers within the macOS SDK provided by either Xcode at:
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk/Library/Developer/CommandLineTools/SDKs/MacOSX.sdkAFAIK, there is no order conflict, just be sure to pay attention to version matching. If using both, I'd install Xcode first, mainly because as the above notes, the install package comes with. Note you can also download the matching CLI tools stand alone installer from downloads/more.
Is there something on your mind that prompts you to ask?