I'd like to keep common base settings together.

If you add base preset like (CMakePresetsBase.json)

{
  "version": 4,
  "configurePresets": [
    {
      "name": "Linux-CPP-only-toolset-configure",
      "hidden": true,
      "generator": "Unix Makefiles",
      "binaryDir": "${sourceDir}/build/${generator}/${presetName}",
      "environment":

{         "PATH": "/opt/rh/gcc-toolset-11/root/usr/bin:$penv\{PATH}

",
        "CXX": "g++",
        "CC": "gcc"
      }
    }
  ],
  "buildPresets": [
    {
      "name": "Linux-CPP-only-toolset-build",
      "hidden": true,
      "verbose": true,
      "jobs": 4,
      "environment":

{         "PATH": "/opt/rh/gcc-toolset-11/root/usr/bin:$penv\{PATH}

",
        "CXX": "g++",
        "CC": "gcc"
      }
    }
  ]
}

 

And then try include this file and try to inherit from these presets - following settings will be lost:

1. environment
2. binary dir
3. generator
4. verbose
5. jobs

...

Basically you will lose everything.

Command line calls of cmake work as expected.
cmake --preset=Release

cmake --build --preset=Release