WIP: Use GHC 8.6.5 as the minimum bootstrap compiler version

aarch64-linux-deb9/Dockerfile

@@ -25,8 +25,10 @@ RUN curl $LLVM_TARBALL | tar -xJC .. && \
     /opt/llvm6/bin/llc --version
 
 # GHC
-RUN curl http://downloads.haskell.org/~ghc/8.6.2/ghc-8.6.2-aarch64-ubuntu_bionic-linux.tar.xz | tar -xJ
-WORKDIR /ghc-8.6.2
+# Use 8.8.1 to bootstrap, since earlier releases are especially buggy on AArch64
+ENV GHC_VERSION 8.8.1
+RUN curl http://downloads.haskell.org/~ghc/$GHC_VERSION/ghc-$GHC_VERSION-aarch64-ubuntu_bionic-linux.tar.xz | tar -xJ
+WORKDIR /ghc-$GHC_VERSION
 RUN ./configure --prefix=/usr/local LLC=/opt/llvm6/bin/llc OPT=/opt/llvm6/bin/opt && \
     make install
 WORKDIR /
@@ -44,15 +46,16 @@ RUN curl $LLVM_TARBALL | tar -xJC .. && \
     $LLC --version
 
 # Cabal
+ENV CABAL_VERSION 3.0.0.0
 RUN git clone https://github.com/haskell/Cabal
 WORKDIR /Cabal
-RUN git checkout cabal-install-v2.4.1.0
+RUN git checkout cabal-install-v$CABAL_VERSION
 WORKDIR /Cabal/cabal-install
 RUN EXTRA_CONFIGURE_OPTS=--disable-optimization ./bootstrap.sh --global --no-doc
 
 RUN ls /Cabal/cabal-install/dist/build
 
-ENV PATH /home/ghc/.local/bin:/opt/cabal/2.2/bin:/opt/ghc/8.4.2/bin:$PATH
+ENV PATH /home/ghc/.local/bin:/opt/ghc/$GHC_VERSION/bin:$PATH
 
 # Create a normal user.
 RUN adduser ghc --gecos "GHC builds" --disabled-password

armv7-linux-deb9/Dockerfile

@@ -26,9 +26,10 @@ RUN curl $LLVM_TARBALL | tar -xJC .. && \
     /opt/llvm5/bin/llc --version
 
 # GHC
-RUN curl http://home.smart-cactus.org/~ben/ghc/ghc-8.4.4-arm-unknown-linux.tar.xz | tar -xJ
-#RUN curl http://downloads.haskell.org/~ghc/8.6.2/ghc-8.6.2-aarch64-ubuntu_bionic-linux.tar.xz | tar -xJ
-WORKDIR /ghc-8.4.4
+# Use 8.8.1 to bootstrap, since earlier releases are especially buggy on AArch64
+ENV GHC_VERSION 8.8.1
+RUN curl http://home.smart-cactus.org/~ben/ghc/ghc-$GHC_VERSION-arm-unknown-linux.tar.xz | tar -xJ
+WORKDIR /ghc-$GHC_VERSION
 RUN ./configure --prefix=/usr/local LLC=/opt/llvm5/bin/llc OPT=/opt/llvm5/bin/opt && \
     make install
 WORKDIR /
@@ -46,15 +47,16 @@ RUN curl $LLVM_TARBALL | tar -xJC .. && \
     $LLC --version
 
 # Cabal
+ENV CABAL_VERSION 3.0.0.0
 RUN git clone https://github.com/haskell/Cabal
 WORKDIR /Cabal
-RUN git checkout cabal-install-v2.4.1.0
+RUN git checkout cabal-install-v$CABAL_VERSION
 WORKDIR /Cabal/cabal-install
 RUN EXTRA_CONFIGURE_OPTS=--disable-optimization ./bootstrap.sh --global --no-doc
 
 RUN ls /Cabal/cabal-install/dist/build
 
-ENV PATH /home/ghc/.local/bin:/opt/cabal/2.2/bin:/opt/ghc/8.4.2/bin:$PATH
+ENV PATH /home/ghc/.local/bin:/opt/ghc/$GHC_VERSION/bin:$PATH
 
 # Create a normal user.
 RUN adduser ghc --gecos "GHC builds" --disabled-password

i386-linux-deb8/Dockerfile

@@ -23,16 +23,18 @@ RUN apt-get update -qq \
 
 WORKDIR /tmp
 # Get i386 GHC bindist for 32 bit CI builds.
-RUN curl https://downloads.haskell.org/~ghc/8.4.4/ghc-8.4.4-i386-deb8-linux.tar.xz | tar -Jx;
-WORKDIR /tmp/ghc-8.4.4
-RUN setarch i386 ./configure --prefix=/opt/ghc-i386/8.4.4 CFLAGS=-m32 --target=i386-unknown-linux --build=i386-unknown-linux --host=i386-unknown-linux; \
+ENV GHC_VERSION 8.6.5
+RUN curl https://downloads.haskell.org/~ghc/$GHC_VERSION/ghc-$GHC_VERSION-i386-deb8-linux.tar.xz | tar -Jx;
+WORKDIR /tmp/ghc-$GHC_VERSION
+RUN setarch i386 ./configure --prefix=/opt/ghc-i386/$GHC_VERSION CFLAGS=-m32 --target=i386-unknown-linux --build=i386-unknown-linux --host=i386-unknown-linux; \
     make install; \
-    rm -rf /tmp/ghc-8.4.4
-ENV PATH /opt/ghc-i386/8.4.4/bin:$PATH
+    rm -rf /tmp/ghc-$GHC_VERSION
+ENV PATH /opt/ghc-i386/$GHC_VERSION/bin:$PATH
 
 WORKDIR /tmp
 # Get Cabal
-RUN curl https://downloads.haskell.org/cabal/cabal-install-2.4.1.0/cabal-install-2.4.1.0-i386-unknown-linux.tar.xz | tar -Jx && \
+ENV CABAL_VERSION 2.4.1.0
+RUN curl https://downloads.haskell.org/cabal/cabal-install-$CABAL_VERSION/cabal-install-$CABAL_VERSION-i386-unknown-linux.tar.xz | tar -Jx && \
     mv cabal /usr/local/bin/cabal
 
 # Create a normal user.

i386-linux-deb9/Dockerfile

@@ -20,16 +20,18 @@ RUN apt-get update -qq \
 
 WORKDIR /tmp
 # Get i386 GHC bindist for 32 bit CI builds.
-RUN curl https://downloads.haskell.org/~ghc/8.4.4/ghc-8.4.4-i386-deb8-linux.tar.xz | tar -Jx;
-WORKDIR /tmp/ghc-8.4.4
-RUN setarch i386 ./configure --prefix=/opt/ghc-i386/8.4.4 CFLAGS=-m32 --target=i386-unknown-linux --build=i386-unknown-linux --host=i386-unknown-linux; \
+ENV GHC_VERSION 8.6.5
+RUN curl https://downloads.haskell.org/~ghc/$GHC_VERSION/ghc-$GHC_VERSION-i386-deb8-linux.tar.xz | tar -Jx;
+WORKDIR /tmp/ghc-$GHC_VERSION
+RUN setarch i386 ./configure --prefix=/opt/ghc-i386/$GHC_VERSION CFLAGS=-m32 --target=i386-unknown-linux --build=i386-unknown-linux --host=i386-unknown-linux; \
     make install; \
-    rm -rf /tmp/ghc-8.4.4
-ENV PATH /opt/ghc-i386/8.4.4/bin:$PATH
+    rm -rf /tmp/ghc-$GHC_VERSION
+ENV PATH /opt/ghc-i386/$GHC_VERSION/bin:$PATH
 
 WORKDIR /tmp
 # Get Cabal
-RUN curl https://downloads.haskell.org/cabal/cabal-install-2.4.1.0/cabal-install-2.4.1.0-i386-unknown-linux.tar.xz | tar -Jx && \
+ENV CABAL_VERSION 2.4.1.0
+RUN curl https://downloads.haskell.org/cabal/cabal-install-$CABAL_VERSION/cabal-install-$CABAL_VERSION-i386-unknown-linux.tar.xz | tar -Jx && \
     mv cabal /usr/local/bin/cabal
 
 # Create a normal user.

linters/Dockerfile

@@ -2,19 +2,35 @@ FROM debian:stretch
 
 ENV LANG C.UTF-8
 
+SHELL ["/bin/bash", "-o", "pipefail", "-c"]
+
 RUN echo 'deb http://ppa.launchpad.net/hvr/ghc/ubuntu xenial main' > /etc/apt/sources.list.d/ghc.list
 
 RUN apt-get update -qq; apt-get install --no-install-recommends -qy gnupg sudo git python3 dirmngr ca-certificates \
     && apt-key adv --keyserver keyserver.ubuntu.com --recv-keys F6F88286 \
     && apt-get update \
-    && apt-get install --no-install-recommends -qy cabal-install-2.2 ghc-8.4.2 \
     && apt-get install --no-install-recommends -qy python3-pip \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/*
 
 RUN pip3 install mypy==0.701
 
-ENV PATH /opt/local/bin:/home/ghc/.local/bin:/opt/cabal/2.2/bin:/opt/ghc/8.4.2/bin:$PATH
+WORKDIR /tmp
+# Install GHC and cabal
+ENV GHC_VERSION 8.6.5
+RUN curl https://downloads.haskell.org/~ghc/$GHC_VERSION/ghc-$GHC_VERSION-x86_64-deb9-linux.tar.xz | tar -Jx;
+WORKDIR /tmp/ghc-$GHC_VERSION
+RUN ./configure --prefix=/opt/ghc/$GHC_VERSION; \
+    make install;
+
+WORKDIR /tmp
+RUN rm -rf /tmp/ghc-$GHC_VERSION
+ENV PATH /opt/ghc/$GHC_VERSION/bin:$PATH
+
+# Get Cabal
+ENV CABAL_VERSION 2.4.1.0
+RUN curl https://downloads.haskell.org/cabal/cabal-install-$CABAL_VERSION/cabal-install-$CABAL_VERSION-x86_64-unknown-linux.tar.xz | tar -Jx && \
+    mv cabal /usr/local/bin/cabal
 
 RUN mkdir -p /opt/local/bin
 

x86_64-linux-centos7/Dockerfile

@@ -32,17 +32,19 @@ RUN sed -i -e 's/systemd//g' /etc/nsswitch.conf
 
 WORKDIR /tmp
 # Install GHC and cabal
-RUN curl https://downloads.haskell.org/~ghc/8.4.4/ghc-8.4.4-x86_64-centos70-linux.tar.xz | tar -Jx
-WORKDIR /tmp/ghc-8.4.4
-RUN ./configure --prefix=/opt/ghc/8.4.4 && make install
+ENV GHC_VERSION 8.6.5
+RUN curl https://downloads.haskell.org/~ghc/$GHC_VERSION/ghc-$GHC_VERSION-x86_64-centos70-linux.tar.xz | tar -Jx
+WORKDIR /tmp/ghc-$GHC_VERSION
+RUN ./configure --prefix=/opt/ghc/$GHC_VERSION && make install
 
 WORKDIR /tmp
-RUN rm -rf /tmp/ghc-8.4.4
-ENV PATH /opt/ghc/8.4.4/bin:$PATH
+RUN rm -rf /tmp/ghc-$GHC_VERSION
+ENV PATH /opt/ghc/$GHC_VERSION/bin:$PATH
 
 WORKDIR /tmp
 # Get Cabal
-RUN curl https://downloads.haskell.org/cabal/cabal-install-2.4.1.0/cabal-install-2.4.1.0-x86_64-unknown-linux.tar.xz | tar -Jx && \
+ENV CABAL_VERSION 2.4.1.0
+RUN curl https://downloads.haskell.org/cabal/cabal-install-$CABAL_VERSION/cabal-install-$CABAL_VERSION-x86_64-unknown-linux.tar.xz | tar -Jx && \
     mv cabal /usr/local/bin/cabal
 
 # Create a normal user.

x86_64-linux-deb8/Dockerfile

@@ -18,17 +18,19 @@ RUN apt-get update -qq && apt-get install --no-install-recommends -qy zlib1g-dev
 
 WORKDIR /tmp
 # Install GHC and cabal
-RUN curl https://downloads.haskell.org/~ghc/8.4.4/ghc-8.4.4-x86_64-deb8-linux.tar.xz | tar -Jx;
-WORKDIR /tmp/ghc-8.4.4
-RUN ./configure --prefix=/opt/ghc/8.4.4; \
+ENV GHC_VERSION 8.6.5
+RUN curl https://downloads.haskell.org/~ghc/$GHC_VERSION/ghc-$GHC_VERSION-x86_64-deb8-linux.tar.xz | tar -Jx;
+WORKDIR /tmp/ghc-$GHC_VERSION
+RUN ./configure --prefix=/opt/ghc/$GHC_VERSION; \
     make install;
 
 WORKDIR /tmp
-RUN rm -rf /tmp/ghc-8.4.4
-ENV PATH /opt/ghc/8.4.4/bin:$PATH
+RUN rm -rf /tmp/ghc-$GHC_VERSION
+ENV PATH /opt/ghc/$GHC_VERSION/bin:$PATH
 
 # Get Cabal
-RUN curl https://downloads.haskell.org/cabal/cabal-install-2.4.1.0/cabal-install-2.4.1.0-x86_64-unknown-linux.tar.xz | tar -Jx && \
+ENV CABAL_VERSION 2.4.1.0
+RUN curl https://downloads.haskell.org/cabal/cabal-install-$CABAL_VERSION/cabal-install-$CABAL_VERSION-x86_64-unknown-linux.tar.xz | tar -Jx && \
     mv cabal /usr/local/bin/cabal
 
 # Create a normal user.

x86_64-linux-deb9/Dockerfile

@@ -26,12 +26,26 @@ RUN apt-get update -qq && apt-get install --no-install-recommends -qy \
     valgrind \
     # Documentation tools
     python3-sphinx texlive-xetex texlive-latex-extra texlive-binaries texlive-fonts-recommended lmodern texlive-generic-extra \
-    cabal-install-2.4 ghc-8.4.4 \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/*
 
 
-ENV PATH /home/ghc/.local/bin:/opt/cabal/2.4/bin:/opt/ghc/8.4.4/bin:$PATH
+WORKDIR /tmp
+# Install GHC and cabal
+ENV GHC_VERSION 8.6.5
+RUN curl https://downloads.haskell.org/~ghc/$GHC_VERSION/ghc-$GHC_VERSION-x86_64-deb9-linux.tar.xz | tar -Jx;
+WORKDIR /tmp/ghc-$GHC_VERSION
+RUN ./configure --prefix=/opt/ghc/$GHC_VERSION; \
+    make install;
+
+WORKDIR /tmp
+RUN rm -rf /tmp/ghc-$GHC_VERSION
+ENV PATH /opt/ghc/$GHC_VERSION/bin:$PATH
+
+# Get Cabal
+ENV CABAL_VERSION 2.4.1.0
+RUN curl https://downloads.haskell.org/cabal/cabal-install-$CABAL_VERSION/cabal-install-$CABAL_VERSION-x86_64-unknown-linux.tar.xz | tar -Jx && \
+    mv cabal /usr/local/bin/cabal
 
 # LLVM
 ENV LLVM_TARBALL http://releases.llvm.org/7.0.0/clang+llvm-7.0.0-x86_64-linux-gnu-ubuntu-16.04.tar.xz

x86_64-linux-fedora27/Dockerfile

@@ -32,16 +32,18 @@ RUN sed -i -e 's/systemd//g' /etc/nsswitch.conf
 
 WORKDIR /tmp
 # Install GHC and cabal
-RUN curl https://downloads.haskell.org/~ghc/8.4.4/ghc-8.4.4-x86_64-fedora27-linux.tar.xz | tar -Jx;
-WORKDIR /tmp/ghc-8.4.4
-RUN ./configure --prefix=/opt/ghc/8.4.4; \
+ENV GHC_VERSION 8.6.5
+RUN curl https://downloads.haskell.org/~ghc/$GHC_VERSION/ghc-$GHC_VERSION-x86_64-fedora27-linux.tar.xz | tar -Jx;
+WORKDIR /tmp/ghc-$GHC_VERSION
+RUN ./configure --prefix=/opt/ghc/$GHC_VERSION; \
     make install; \
-    rm -rf /tmp/ghc-8.4.4
-ENV PATH /opt/ghc/8.4.4/bin:$PATH
+    rm -rf /tmp/ghc-$GHC_VERSION
+ENV PATH /opt/ghc/$GHC_VERSION/bin:$PATH
 
 WORKDIR /tmp
 # Get Cabal
-RUN curl https://downloads.haskell.org/cabal/cabal-install-2.4.1.0/cabal-install-2.4.1.0-x86_64-unknown-linux.tar.xz | tar -Jx && \
+ENV CABAL_VERSION 2.4.1.0
+RUN curl https://downloads.haskell.org/cabal/cabal-install-$CABAL_VERSION/cabal-install-$CABAL_VERSION-x86_64-unknown-linux.tar.xz | tar -Jx && \
     mv cabal /usr/local/bin/cabal
 
 # Create a normal user.