The whole "conditions" part of the MIT license is this: "The above copyright notice and this permission notice shall be included in all copies or substantial p

The whole "conditions" part of the MIT license is this: "The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software." No requirements for you to keep the licensing constant for unmodified files. If you fork ViviumLab, you're subject to GPL (plus the sublicenses?, but GPL covers that anyway if you don't remove the licenses from your source code); if you fork HomeLab, you're subject to MIT. They don't need to change anything for you to be subject to GPL.