def Lean.Compiler.LCNF.collectUsedDecls (decls : Array Name) : CoreM (Array (Decl Purity.impure) × Array (Signature Purity.impure))

Find all declarations that the declarations in decls transitively depend on. They are returned partitioned into the declarations from the current module and declarations from other modules.

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def Lean.Compiler.LCNF.usesModuleFrom (env : Environment) (modulePrefix : Name) : Bool

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• Lean.Compiler.LCNF.usesModuleFrom env modulePrefix = env.header.modules.any fun (mod : Lean.EffectiveImport) => mod.irPhases != Lean.IRPhases.comptime && modulePrefix.isPrefixOf mod.module