Why "error: the baseline does not contain an entry for port sdl3?"

[MarkCallow]

vcpkg search sdl3 shows:

vcpkg search sdl3
imgui[sdl3-binding]                       Make available SDL3 binding
imgui[sdl3-renderer-binding]              Make available SDL3 Renderer binding
sdl3                     3.2.16           Simple DirectMedia Layer is a cross-platform development library designed ...
sdl3[alsa]                                Support for alsa audio
sdl3[ibus]                                Build with ibus IME support
sdl3[vulkan]                              Vulkan functionality for SDL
sdl3[wayland]                             Build with Wayland support
sdl3[x11]                                 Build with X11 support
sdl3-image               3.2.4            SDL_image is an image file loading library. It loads images as SDL surface...
sdl3-image[jpeg]                          Support for JPEG image format
sdl3-image[png]                           Support for PNG image format
sdl3-image[tiff]                          Support for TIFF image format
sdl3-image[webp]                          Support for WEBP image format.
sdl3-ttf                 3.2.2#1          A library for rendering TrueType fonts with SDL
sdl3-ttf[harfbuzz]                        Enable HarfBuzz support
sdl3-ttf[svg]                             Enable plutosvg for color emoji support
tgui[sdl3]                                Build the SDL3 backend

My vcpkg.json manifest is

{
  "$schema": "https://raw.githubusercontent.com/microsoft/vcpkg-tool/main/docs/vcpkg.schema.json",
  "name": "ktx-software",
  "features": {
    "loadtests": {
      "description": "OpenGL & Vulkan Load Tests.",
      "dependencies": [
        "assimp",
        {
          "name": "sdl3",
          "default-features": true,
          "features": [
            "vulkan"
          ]
        }
      ]
    },
    "glloadtests": {
      "description": "OpenGL Load Tests.",
      "dependencies": [
        {
          "name": "glew",
          "platform": "windows"
        }
      ]
    }
  }
}

When I run the cmake configure I get

Running vcpkg install
error: the baseline does not contain an entry for port sdl3

Given that vcpkg search shows both the requested package and requested feature exist why do I get the error? What is "the baseline"? How do I fix it?

[autoantwort]

What is the content of vcpkg-configuration.json?

[MarkCallow]

What is the content of vcpkg-configuration.json?

{
  "default-registry": {
    "kind": "git",
    "baseline": "7aeffc91033ad35cc4e2c152f213a866ec6c11ac",
    "repository": "https://github.com/microsoft/vcpkg"
  },
  "registries": [
    {
      "kind": "artifact",
      "location": "https://aka.ms/vcpkg-ce-default",
      "name": "microsoft"
    }
  ],
  "overlay-triplets": [
    "./vcpkg-triplets"
  ]
}

I see now. I only added this file because I needed overlay triplets. and copied this from somewhere without real understanding.

Do I have to specify the default-registry in here or can I omit baseline?

This would also explain why I haven't seen some package updates I was expecting.

[MarkCallow]

All the web search results for "baseline" describe it as denoting the minimum version to use. However my observations in practice show it is denoting the maximum version to use. Once I changed it to the vcpkg HEAD commit it found the sdl3 port and an update for another package that fixed some cmake warnings from the earlier version.

Which is it meant to be?

I found that I can't omit baseline. Can I omit default-registry?