Err when trying to build the editor without its required modules

[YuriSizov]

See #74546 (comment). I didn't add the same check for the text server being disabled, because you can extend it with a third party module instead, and I don't think we can detect that there is no text server implementation whatsoever during this validation step.

[ajreckof]

I really like what is done here but i think there is way more modules that are needed for the editor not to crash. I tried a bit, with only the two modules checked here plus the text server, it crashes. So tried to find which ones are needed but could only find that it needed a language (added gdscript). After that vulkan driver complains about no pipeline being set.
Not sure which module is needed for the pipeline and the driver part of the source code is too hard for me.

[akien-mga]

This check used to exist (still does in 3.x) but was removed in 951a101, possibly as an oversight. CC @Faless

Makes sense to add back.

I really like what is done here but i think there is way more modules that are needed for the editor not to crash. I tried a bit, with only the two modules checked here plus the text server, it crashes. So tried to find which ones are needed but could only find that it needed a language (added gdscript). After that vulkan driver complains about no pipeline being set.
Not sure which module is needed for the pipeline and the driver part of the source code is too hard for me.

The editor should be able to run without GDScript, as long as you're not trying to run GDScript code. So if it doesn't, this should be fixed.

Likewise for rendering, it should work in headless mode if no valid renderer is compiled, so this would be worth looking into separately.

[YuriSizov]

Makes sense to add back.

Do you want me to try and restore it as it was, without hardcoding these two specific dependencies?

[akien-mga]

Yeah I think the old format was a bit more flexible to add more modules to the array.

In theory the module dependency graph added by Fabio could be used for this too but since the editor isn't a module, it doesn't run this check.

[YuriSizov]

Okay, made the changes. The output looks something like this now:

scons: Reading SConscript files ...
Found MSVC version 14.2, arch x86_64
Building for platform "windows", architecture "x86_64", target "editor".
NOTE: Developer build, with debug optimization level and debug symbols (unless overridden).
Disabling 'editor' module as the following dependencies are not satisfied: freetype, svg
Not all modules required by editor builds are enabled.

We still need to explicitly list the dependencies, if I understand correctly. I don't see that being done in the old version, I'm not sure it even worked?

[akien-mga]

Thanks!

[YuriSizov]

Cherry-picked for 4.0.3.