Use #[cfg(dev)] in build.rs

[raphaelmenges]

Hello 👋,

I am applying a custom manifest for the Windows variant of my Tauri application. However, I only want the manifest to be applied for production builds via npm run tauri build, not for development builds via npm run tauri dev. To my understanding, #[cfg(dev)] etc. seem to be not available in build.rs.

It this a wrong understanding or is there a different way to determine in build.rs whether it is a development or production build?

[FabianLars]

copying this

tauri/crates/tauri-build/src/lib.rs

Lines 415 to 418 in 3a74dc8

	pub fn is_dev() -> bool {
	env::var("DEP_TAURI_DEV").expect("missing `cargo:dev` instruction, please update tauri to latest")
	== "true"
	}

into your build.rs file should work (at least it seems to work for me)

[raphaelmenges]

Works, thank you!