Compiling against 2 versions of an API

[Parker8283]

I am working on a mod that compiles against two versions of the BuildCraft API, mostly because they changed a lot between 5.x and 6.0.x. However, I am having problems making Gradle work to do this. I can't get it to download both APIs from the Forge Maven (it just downloads the newest one), and after putting one of the APIs in src/api/java and keeping the other one in the dependencies block in my build.gradle, my IDE said that all was good, but Gradle failed on recompile. The API in src/api/java compiled correctly, but Gradle still used the API defined in the dependencies block to compile against. Is there any way that I can accomplish this, or should I just drop the 5.x API support?

[LexManos]

Just drop 5.x and use 6. Its a no brainer, dont mix and match api versions -.-

[Parker8283]

I expected that, but the thing is, I didn't originally write this, so the guy that did somehow got it to compile (I believe without FG), so I was kinda wondering how... but yea, totally expected that.