Always use system curl by default when building utoipa-swagger-ui

[cyqsimon]

Also fixes #1044

[cyqsimon]

It seems to me that the original author of this code assumed conditional compilation within the build script (#[cfg]/cfg!()) and the environment variables presented to the build script at runtime (CARGO_CFG_*) can be used interchangeably, whereas in reality there is a semantic difference that becomes important in cross-compilation.

I haven't bothered scrutinizing other parts of build.rs (or for that matter, the build script of other crates), but I suspect there could be similar oversights too. Maybe this is something worth looking over.

[juhaku]

Great, it is much cleaner as so. 🎉

[juhaku]

I haven't bothered scrutinizing other parts of build.rs (or for that matter, the build script of other crates), but I suspect there could be similar oversights too. Maybe this is something worth looking over.

Sure if you see it worthwhile. (Though other crates does not have any build scripts as of this moment). The cross platform support is mainly relied on community support. Since I am only a linux user. And some choises I have made is based only on assumption of how it suppose to work 😅