How I can select which main file I must build in flutter during a release of a desktop application?

Question

In flutter a made a linux application. Is consumes an endoint that varies depending the environment I need to build for. For each environment I have a different main file:

• For production I have a main-prod.dart
• For staging I have a main-staging.dart
• For local development I have a main-dev.dart All files are located into `./lib/ folder with the rest of source code

During building for desktop application via:

• flutter build linux or
• flutter build windows or
• flutter build macos

During run I can provide via -t parameter for example for local development I run:

flutter run -t ./lib/main-dev.dart

But how on Chirst's sake I can do the same for buidling as well?

Answer 1

In you case you can build your application via:

flutter ^device^ -t ^main_file^

Where ^device^ are one of the following:

• windows
• linux
• macos

And the ^main_file^ is the one you use during flutter run` in your case you have theese commands to select from:

environment	file	windows	linux	macos
production	main-prod.dart	flutter build windows -t ./lib/main-prod.dart	flutter build linux -t ./lib/main-prod.dart	flutter build macos -t ./lib/main-prod.dart
development	main-dev.dart	flutter build windows -t ./lib/main-dev.dart	flutter build linux -t ./lib/main-dev.dart	flutter build macos -t ./lib/main-dev.dart
staging	main-staging.dart	flutter build windows -t ./lib/main-staging.dart	flutter build linux -t ./lib/main-staging.dart	flutter build macos -t ./lib/main-staging.dart