ghc.df

FROM arm64v8/debian:buster-20200720
ENV LANG            C.UTF-8
RUN apt-get update \
 && apt-get install -y wget curl git xz-utils \
                       gcc make \
                       libncurses5 zlib1g-dev libtinfo-dev libnuma-dev
RUN mkdir /root/ghc && cd /root/ghc

# Mostly based on this: https://www.haskell.org/ghc/blog/20200515-ghc-on-arm.html
#
# Note 1:
# The GHC ARM binaries are distributed with 'deb9' in their name. However we
# can't seem to use Debian 9 for this build. Why? Because GHC-8.10.1 requires
# llvm-9 for code generation on aarch64 and llvm-9 requires glibc>=2.27 but
# Debian 9 ships with 2.24. So why does GHCHQ ship GHC binaries for aarch64
# built on Debian 9? No clue. We are using Debian 10 for the build. This
# assumes that the GHC binaries built on Debian 9 will work on Debian 10

# Note 2:
# cabal-install-3.2.0.0 for aarch64 (required for ghc-8.10.1) needs to be
# downloaded from this non GHCHQ source : home.smart-cactus.org/~ben which
# seems to be okay given that Ben Gamari works on GHC.

RUN wget 'https://downloads.haskell.org/ghc/8.10.1/ghc-8.10.1-aarch64-deb9-linux.tar.xz' \
 && tar -xf ghc-8.10.1-aarch64-deb9-linux.tar.xz \
 && cd ghc-8.10.1 \
 && ./configure \
 && make install \
 && cd .. && rm -rf ghc-8.10.1 ghc-8.10.1-aarch64-deb9-linux.tar.xz

RUN wget 'http://home.smart-cactus.org/~ben/ghc/cabal-install-3.2.0.0-aarch64-debian9-linux.tar.xz' \
 && tar -xf cabal-install-3.2.0.0-aarch64-debian9-linux.tar.xz \
 && mv cabal /usr/local/bin/ \
 && rm -rf cabal-install-3.2.0.0-aarch64-debian9-linux.tar.xz

# Why aren't we using apt.llvm.org for installing llvm-9? Because aarch64 is
# not a supported architecture

RUN wget 'https://github.com/llvm/llvm-project/releases/download/llvmorg-9.0.1/clang+llvm-9.0.1-aarch64-linux-gnu.tar.xz' \
 && tar -xf clang+llvm-9.0.1-aarch64-linux-gnu.tar.xz \
 && cd clang+llvm-9.0.1-aarch64-linux-gnu/ \
 && cp -R * /usr/local/ \
 && rm -rf clang+llvm-9.0.1-aarch64-linux-gnu.tar.xz clang+llvm-9.0.1-aarch64-linux-gnu/