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rahulmutt / Spec.md
Last active January 12, 2018 01:11
Eta FFI Specification

Eta FFI Specification

Architecture

The Eta FFI Generator will consist of support from three components:

  • The Eta compiler
  • The Etlas build tool
  • The eta-ffi tool

Eta Compiler

Overview of GHCVM

GHCVM has successfully accomplished the goals of Summer of Haskell:

  • compile GHC 7.10.3's Haskell to Java bytecode
  • access the vast Java ecosystem within Haskell
  • port the base library

The initial proposal can be found here.

Motivation

Visa requirements for UK conferences.

First you'll want to check if you need a visa to enter the UK.

  • Nationals of the EU, Switzerland, and EEA countries will not need a visa, and are free to work and conduct business in the UK.
  • Nationals from some designated countries such as USA may travel for tourist or business purposes under a visa exemption. The link above will detail what documents you need to provide in order to travel under a visa exemption.
  • Other nationals will need a visa.

The rules for allowable business travel under a visa exemption are covered by the same rules as those travelling under a vistor visa. If you will be travelling under a visa-exemption and the conference is covering your costs in any way you should make sure to read the relevant section below.