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Iirc you are setting a constraint on the version of the platform, not set the constraints in the platform.
You probably want that plaform dependency outside the constraints block.

Looks like that does the trick:
```javaPlatform.allowDependencies()
dependencies {
    constraints {
        api(platform("org.springframework.boot:spring-boot-dependencies:2.7.5"))
    }
    api(platform("org.springframework.boot:spring-boot-dependencies:2.7.5"))
}```
The above does make the platform available transitively.

That doesn't sound correct though.
Are you sure it does not work with `allowDependencies` and without the `constraints` block?

I did not test, but wouldn't I also want a constraint on the platform version?

Ah, no you are right about the `allowDependendies`, it's even documented :slightly_smiling_face:

If you also want a constraint for the platform, sure, but I think then it should be without `platform`

So probably something like
```javaPlatform.allowDependencies()
dependencies {
    constraints {
        api("org.springframework.boot:spring-boot-dependencies:2.7.5")
    }
    api(platform("org.springframework.boot:spring-boot-dependencies:2.7.5"))
}```


The constraint should afair just care about the version for the coordinates.
The `platform(...)` just sets attributes for a dependency so that the platform variant is used. I think for a constraint this should at best be unnecessary clutter.