Use GHC 8.8 as the minimum bootstrap compiler version

This patch makes GHC 8.8 the minimum bootstrap compiler across all Docker images in preparation for the same requirement being imposed on GHC. In most cases, I was able to use 8.8.3. The exception is `x86_64-linux-deb10`, where the only 8.8 bindist I could find was 8.8.1.

Use GHC 8.8 as the minimum bootstrap compiler version
This patch makes GHC 8.8 the minimum bootstrap compiler across all Docker images in preparation for the same requirement being imposed on GHC. In most cases, I was able to use 8.8.3. The exception is `x86_64-linux-deb10`, where the only 8.8 bindist I could find was 8.8.1.
93d2060d · Ryan Scott · 408eff66 · 93d2060d · 93d2060d · 93d2060d
Commit 93d2060d authored Mar 25, 2020 by Ryan Scott
11 changed files
--- a/aarch64-linux-deb9/Dockerfile
+++ b/aarch64-linux-deb9/Dockerfile
@@ -19,16 +19,15 @@ RUN apt-get update \
 ENV BOOT_LLVM_DIR /opt/llvm-bootstrap
 ENV BOOT_LLVM_VERSION 7.0.0
 ENV PATH /usr/local/bin:$PATH
-RUN curl http://releases.llvm.org/$BOOT_LLVM_VERSION/clang+llvm-$BOOT_LLVM_VERSION-aarch64-linux-gnu.tar.xz | tar -xJC . && \
+RUN curl -L http://releases.llvm.org/$BOOT_LLVM_VERSION/clang+llvm-$BOOT_LLVM_VERSION-aarch64-linux-gnu.tar.xz | tar -xJC . && \
    mkdir $BOOT_LLVM_DIR && \
    cp -R clang+llvm*/* $BOOT_LLVM_DIR && \
    rm -R clang+llvm* && \
    $BOOT_LLVM_DIR/bin/llc --version

 # GHC
-# 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-deb9-linux.tar.xz | tar -xJ
+ENV GHC_VERSION 8.8.3
+RUN curl -L http://downloads.haskell.org/~ghc/$GHC_VERSION/ghc-$GHC_VERSION-aarch64-deb9-linux.tar.xz | tar -xJ
 WORKDIR /ghc-$GHC_VERSION
 RUN ./configure --prefix=/usr/local LLC=$BOOT_LLVM_DIR/bin/llc OPT=$BOOT_LLVM_DIR/bin/opt && \
    make install
@@ -40,7 +39,7 @@ RUN ghc --version
 ENV LLVM_DIR /opt/llvm
 ENV LLVM_VERSION 9.0.0
 ENV PATH $LLVM_DIR/bin:$PATH
-RUN curl http://releases.llvm.org/$LLVM_VERSION/clang+llvm-$LLVM_VERSION-aarch64-linux-gnu.tar.xz | tar -xJC . && \
+RUN curl -L http://releases.llvm.org/$LLVM_VERSION/clang+llvm-$LLVM_VERSION-aarch64-linux-gnu.tar.xz | tar -xJC . && \
    mkdir $LLVM_DIR && \
    cp -R clang+llvm*/* $LLVM_DIR && \
    rm -R clang+llvm* && \
@@ -48,13 +47,7 @@ RUN curl http://releases.llvm.org/$LLVM_VERSION/clang+llvm-$LLVM_VERSION-aarch64

 # Cabal
 ENV CABAL_VERSION 3.0.0.0
-#RUN git clone https://github.com/haskell/Cabal
-#WORKDIR /Cabal
-#RUN git checkout cabal-install-v$CABAL_VERSION
-#WORKDIR /Cabal/cabal-install
-#RUN EXTRA_CONFIGURE_OPTS=--disable-optimization ./bootstrap.sh --global --no-doc
-#RUN ls /Cabal/cabal-install/dist/build
-RUN curl http://home.smart-cactus.org/~ben/ghc/cabal-install-$CABAL_VERSION-aarch64-debian9-linux.tar.xz | tar -Jx && \
+RUN curl -L http://home.smart-cactus.org/~ben/ghc/cabal-install-$CABAL_VERSION-aarch64-debian9-linux.tar.xz | tar -Jx && \
    mv cabal /usr/local/bin/cabal

 ENV PATH /home/ghc/.local/bin:/opt/ghc/$GHC_VERSION/bin:$PATH

--- a/armv7-linux-deb9/Dockerfile
+++ b/armv7-linux-deb9/Dockerfile
@@ -20,16 +20,15 @@ RUN apt-get update \
 ENV BOOT_LLVM_DIR /opt/llvm-bootstrap
 ENV BOOT_LLVM_VERSION 7.0.0
 ENV PATH /usr/local/bin:$PATH
-RUN curl http://releases.llvm.org/$BOOT_LLVM_VERSION/clang+llvm-$BOOT_LLVM_VERSION-armv7a-linux-gnueabihf.tar.xz | tar -xJC . && \
+RUN curl -L http://releases.llvm.org/$BOOT_LLVM_VERSION/clang+llvm-$BOOT_LLVM_VERSION-armv7a-linux-gnueabihf.tar.xz | tar -xJC . && \
    mkdir $BOOT_LLVM_DIR && \
    cp -R clang+llvm*/* $BOOT_LLVM_DIR && \
    rm -R clang+llvm* && \
    $BOOT_LLVM_DIR/bin/llc --version

 # GHC
-# Use 8.8.1 to bootstrap, since earlier releases are especially buggy on AArch64
-ENV GHC_VERSION 8.8.1
-RUN curl https://downloads.haskell.org/ghc/$GHC_VERSION/ghc-$GHC_VERSION-armv7l-deb9-linux.tar.xz | tar -xJ
+ENV GHC_VERSION 8.8.3
+RUN curl -L https://downloads.haskell.org/ghc/$GHC_VERSION/ghc-$GHC_VERSION-armv7l-deb9-linux.tar.xz | tar -xJ
 WORKDIR /ghc-$GHC_VERSION
 RUN ./configure --prefix=/usr/local LLC=$BOOT_LLVM_DIR/bin/llc OPT=$BOOT_LLVM_DIR/bin/opt && \
    make install
@@ -41,7 +40,7 @@ RUN ghc --version
 ENV LLVM_DIR /opt/llvm
 ENV LLVM_VERSION 9.0.0
 ENV PATH $LLVM_DIR/bin:$PATH
-RUN curl http://releases.llvm.org/$LLVM_VERSION/clang+llvm-$LLVM_VERSION-armv7a-linux-gnueabihf.tar.xz | tar -xJC . && \
+RUN curl -L http://releases.llvm.org/$LLVM_VERSION/clang+llvm-$LLVM_VERSION-armv7a-linux-gnueabihf.tar.xz | tar -xJC . && \
    mkdir $LLVM_DIR && \
    cp -R clang+llvm*/* $LLVM_DIR && \
    rm -R clang+llvm* && \
@@ -49,13 +48,7 @@ RUN curl http://releases.llvm.org/$LLVM_VERSION/clang+llvm-$LLVM_VERSION-armv7a-

 # Cabal
 ENV CABAL_VERSION 3.0.0.0
-#RUN git clone https://github.com/haskell/Cabal
-#WORKDIR /Cabal
-#RUN git checkout cabal-install-v$CABAL_VERSION
-#WORKDIR /Cabal/cabal-install
-#RUN EXTRA_CONFIGURE_OPTS=--disable-optimization ./bootstrap.sh --global --no-doc
-#RUN ls /Cabal/cabal-install/dist/build
-RUN curl http://home.smart-cactus.org/~ben/ghc/cabal-install-$CABAL_VERSION-armv7l-debian9-linux.tar.xz | tar -Jx && \
+RUN curl -L http://home.smart-cactus.org/~ben/ghc/cabal-install-$CABAL_VERSION-armv7l-debian9-linux.tar.xz | tar -Jx && \
    mv cabal /usr/local/bin/cabal

 ENV PATH /home/ghc/.local/bin:/opt/ghc/$GHC_VERSION/bin:$PATH

--- a/i386-linux-deb9/Dockerfile
+++ b/i386-linux-deb9/Dockerfile
@@ -20,8 +20,8 @@ RUN apt-get update -qq \

 WORKDIR /tmp
 # Get i386 GHC bindist for 32 bit CI builds.
-ENV GHC_VERSION 8.6.5
-RUN curl https://downloads.haskell.org/~ghc/$GHC_VERSION/ghc-$GHC_VERSION-i386-deb9-linux.tar.xz | tar -Jx;
+ENV GHC_VERSION 8.8.3
+RUN curl -L https://downloads.haskell.org/~ghc/$GHC_VERSION/ghc-$GHC_VERSION-i386-deb9-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; \
@@ -30,8 +30,8 @@ ENV PATH /opt/ghc-i386/$GHC_VERSION/bin:$PATH

 WORKDIR /tmp
 # Get Cabal
-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 && \
+ENV CABAL_VERSION 3.0.0.0
+RUN curl -L 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.

--- a/linters/Dockerfile
+++ b/linters/Dockerfile
@@ -32,8 +32,8 @@ RUN apt-get update -qq && apt-get install --no-install-recommends -qy \

 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;
+ENV GHC_VERSION 8.8.3
+RUN curl -L 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;
@@ -43,15 +43,15 @@ 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 && \
+ENV CABAL_VERSION 3.0.0.0
+RUN curl -L 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_DIR /opt/llvm
 ENV LLVM_VERSION 9.0.0
 ENV PATH $LLVM_DIR/bin:$PATH
-RUN curl http://releases.llvm.org/$LLVM_VERSION/clang+llvm-$LLVM_VERSION-x86_64-linux-gnu-ubuntu-16.04.tar.xz | tar -xJC .; \
+RUN curl -L http://releases.llvm.org/$LLVM_VERSION/clang+llvm-$LLVM_VERSION-x86_64-linux-gnu-ubuntu-16.04.tar.xz | tar -xJC .; \
    mkdir $LLVM_DIR && \
    cp -R clang+llvm*/* $LLVM_DIR && \
    rm -R clang+llvm* && \
@@ -77,7 +77,7 @@ RUN pip3 install mypy==0.701
 USER ghc

 RUN cabal update
-ENV LINTER_COMMIT 265c74fb4f5a341e23dbe2d89a87a5a2516bf3e8
+ENV LINTER_COMMIT b5650c094c98daec9416ceac92ca2cf3c099640f
 RUN git clone https://gitlab.haskell.org/ghc/git-haskell-org-hooks && \
    git -C git-haskell-org-hooks checkout $LINTER_COMMIT
 WORKDIR /home/ghc/git-haskell-org-hooks

--- a/x86_64-freebsd/build-toolchain.sh
+++ b/x86_64-freebsd/build-toolchain.sh
@@ -11,7 +11,7 @@ mkdir binutils
 cd binutils

 # Build binutils for target platform.
-curl https://ftp.gnu.org/gnu/binutils/binutils-$BINUTILS.tar.bz2 | tar xjf -
+curl -L https://ftp.gnu.org/gnu/binutils/binutils-$BINUTILS.tar.bz2 | tar xjf -

 mkdir binutils-build
 cd binutils-build
@@ -34,7 +34,7 @@ case "$ARCH" in
 esac

 URL=https://download.freebsd.org/ftp/releases/$FREEBSD_ARCH/$FREEBSD/base.txz
-curl $URL | tar xJf - -C freebsd ./usr/include ./usr/lib ./lib
+curl -L $URL | tar xJf - -C freebsd ./usr/include ./usr/lib ./lib

 dst=/usr/local/$ARCH-unknown-freebsd10

@@ -58,7 +58,7 @@ cp freebsd/lib/libncursesw.so.8 $dst/lib

 # Install iconv port in target env.
 URL_ICONV=http://pkg.freebsd.org/FreeBSD:11:$FREEBSD_ARCH/latest/All/libiconv-1.14_11.txz
-curl $URL_ICONV | tar xJf - -C freebsd
+curl -L $URL_ICONV | tar xJf - -C freebsd
 cp -r freebsd/usr/local/include $dst/
 cp -d freebsd/usr/local/lib/* $dst/lib

@@ -75,7 +75,7 @@ rm -rf freebsd
 # Build gcc for target platform.
 mkdir gcc
 cd gcc
-curl https://ftp.gnu.org/gnu/gcc/gcc-$GCC/gcc-$GCC.tar.gz | tar xzf -
+curl -L https://ftp.gnu.org/gnu/gcc/gcc-$GCC/gcc-$GCC.tar.gz | tar xzf -
 cd gcc-$GCC
 ./contrib/download_prerequisites


--- a/x86_64-linux-alpine/Dockerfile
+++ b/x86_64-linux-alpine/Dockerfile
-FROM alpine:3.10.2
+FROM alpine:3.11.5

 SHELL ["/bin/ash", "-eo", "pipefail", "-c"]

@@ -6,33 +6,38 @@ RUN echo "Installing GHC build dependencies..." && \
    apk add --no-cache \
        autoconf=~2.69 \
        automake=~1.16 \
-        binutils-gold=~2.32 \
+        binutils-gold=~2.33 \
        build-base=~0.5 \
        coreutils=~8.31 \
-        cpio=~2.12 \
+        cpio=~2.13 \
        linux-headers=~4.19 \
        libffi-dev=~3.2 \
        musl-dev=~1 \
        ncurses-dev=~6.1 \
-        python3=~3.7 \
-        py3-sphinx=~1.8 \
+        python3=~3.8 \
+        py3-sphinx=~2.2 \
        zlib-dev=~1.2 \
        xz=~5.2 \
        bash=~5.0 \
-        git=~2.22 \
+        git=~2.24 \
        wget=~1.20 \
        sudo=~1.8 \
        grep=~3 \
-        curl=~7.66 \
+        curl=~7.67 \
        gmp-dev=~6.1 \
-        cabal=~2.4
+        cabal=~2.4 \
+        ghc=~8.6

 WORKDIR /tmp
 # Install GHC
-ENV GHC_VERSION 8.6.5
+ENV GHC_VERSION 8.8.3
 # NB: This is not an official bindist, but rather an alternative bindist taken
 #     from https://github.com/redneb/ghc-alt-libc.
 RUN curl -L https://github.com/redneb/ghc-alt-libc/releases/download/ghc-$GHC_VERSION-musl/ghc-$GHC_VERSION-x86_64-unknown-linux-musl.tar.xz | tar -Jx;
+# The ghc-alt-libc bindist requires libtinfow.so.6, so symlink what Alpine
+# provides. This hack can likely be removed when we start using GHC's native
+# Alpine bindists in the future.
+RUN ln -s /usr/lib/libncursesw.so.6 /usr/lib/libtinfow.so.6
 WORKDIR /tmp/ghc-$GHC_VERSION
 RUN ./configure --disable-ld-override --prefix=/opt/ghc/$GHC_VERSION; \
    make install;
@@ -47,10 +52,15 @@ RUN echo "ghc ALL = NOPASSWD : ALL" > /etc/sudoers.d/ghc
 USER ghc
 WORKDIR /home/ghc/

-# Build Haskell tools
+# Install cabal
+ENV BOOT_GHC /usr/bin/ghc
 RUN cabal v2-update && \
-    cabal v2-install hscolour happy alex --constraint 'happy ^>= 1.19.10'
+    cabal v2-install cabal-install --constraint 'cabal-install ^>= 3.0' -w $BOOT_GHC
 ENV PATH /home/ghc/.cabal/bin:$PATH
+
+# Build Haskell tools
+RUN cabal user-config update && \
+    cabal v2-install hscolour happy alex --constraint 'happy ^>= 1.19.10'
 ENV SPHINXBUILD /usr/bin/sphinx-build-3

 CMD ["bash"]
--- a/x86_64-linux-centos7/Dockerfile
+++ b/x86_64-linux-centos7/Dockerfile
@@ -32,8 +32,8 @@ RUN sed -i -e 's/systemd//g' /etc/nsswitch.conf

 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-centos7-linux.tar.xz | tar -Jx
+ENV GHC_VERSION 8.8.3
+RUN curl -L https://downloads.haskell.org/~ghc/$GHC_VERSION/ghc-$GHC_VERSION-x86_64-centos7-linux.tar.xz | tar -Jx
 WORKDIR /tmp/ghc-$GHC_VERSION
 RUN ./configure --prefix=/opt/ghc/$GHC_VERSION && make install

@@ -43,8 +43,8 @@ ENV PATH /opt/ghc/$GHC_VERSION/bin:$PATH

 WORKDIR /tmp
 # 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 && \
+ENV CABAL_VERSION 3.0.0.0
+RUN curl -L 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.

--- a/x86_64-linux-deb10/Dockerfile
+++ b/x86_64-linux-deb10/Dockerfile
@@ -33,8 +33,8 @@ RUN apt-get update -qq && apt-get install --no-install-recommends -qy \
 WORKDIR /tmp
 # Install GHC and cabal
 ENV GHC_VERSION 8.8.1
-#RUN curl https://downloads.haskell.org/~ghc/$GHC_VERSION/ghc-$GHC_VERSION-x86_64-fedora27-linux.tar.xz | tar -Jx;
-RUN curl http://home.smart-cactus.org/~ben/ghc/release-prep/$GHC_VERSION/ghc-$GHC_VERSION-x86_64-deb10-linux.tar.xz | tar -Jx;
+#RUN curl -L https://downloads.haskell.org/~ghc/$GHC_VERSION/ghc-$GHC_VERSION-x86_64-deb10-linux.tar.xz | tar -Jx;
+RUN curl -L http://home.smart-cactus.org/~ben/ghc/release-prep/$GHC_VERSION/ghc-$GHC_VERSION-x86_64-deb10-linux.tar.xz | tar -Jx;
 WORKDIR /tmp/ghc-$GHC_VERSION
 RUN ./configure --prefix=/opt/ghc/$GHC_VERSION; \
    make install;
@@ -44,15 +44,15 @@ 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 && \
+ENV CABAL_VERSION 3.0.0.0
+RUN curl -L 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_DIR /opt/llvm
 ENV LLVM_VERSION 7.0.0
 ENV PATH $LLVM_DIR/bin:$PATH
-RUN curl http://releases.llvm.org/$LLVM_VERSION/clang+llvm-$LLVM_VERSION-x86_64-linux-gnu-ubuntu-16.04.tar.xz | tar -xJC .; \
+RUN curl -L http://releases.llvm.org/$LLVM_VERSION/clang+llvm-$LLVM_VERSION-x86_64-linux-gnu-ubuntu-16.04.tar.xz | tar -xJC .; \
    mkdir $LLVM_DIR && \
    cp -R clang+llvm*/* $LLVM_DIR && \
    rm -R clang+llvm* && \

--- a/x86_64-linux-deb8/Dockerfile
+++ b/x86_64-linux-deb8/Dockerfile
@@ -18,8 +18,8 @@ RUN apt-get update -qq && apt-get install --no-install-recommends -qy zlib1g-dev

 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-deb8-linux.tar.xz | tar -Jx;
+ENV GHC_VERSION 8.8.3
+RUN curl -L 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;
@@ -29,8 +29,8 @@ 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 && \
+ENV CABAL_VERSION 3.0.0.0
+RUN curl -L 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.

--- a/x86_64-linux-deb9/Dockerfile
+++ b/x86_64-linux-deb9/Dockerfile
@@ -32,8 +32,8 @@ RUN apt-get update -qq && apt-get install --no-install-recommends -qy \

 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;
+ENV GHC_VERSION 8.8.3
+RUN curl -L 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;
@@ -43,15 +43,15 @@ 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 && \
+ENV CABAL_VERSION 3.0.0.0
+RUN curl -L 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_DIR /opt/llvm
 ENV LLVM_VERSION 9.0.0
 ENV PATH $LLVM_DIR/bin:$PATH
-RUN curl http://releases.llvm.org/$LLVM_VERSION/clang+llvm-$LLVM_VERSION-x86_64-linux-gnu-ubuntu-16.04.tar.xz | tar -xJC .; \
+RUN curl -L http://releases.llvm.org/$LLVM_VERSION/clang+llvm-$LLVM_VERSION-x86_64-linux-gnu-ubuntu-16.04.tar.xz | tar -xJC .; \
    mkdir $LLVM_DIR && \
    cp -R clang+llvm*/* $LLVM_DIR && \
    rm -R clang+llvm* && \

--- a/x86_64-linux-fedora27/Dockerfile
+++ b/x86_64-linux-fedora27/Dockerfile
@@ -32,8 +32,8 @@ RUN sed -i -e 's/systemd//g' /etc/nsswitch.conf

 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-fedora27-linux.tar.xz | tar -Jx;
+ENV GHC_VERSION 8.8.3
+RUN curl -L 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; \
@@ -42,8 +42,8 @@ ENV PATH /opt/ghc/$GHC_VERSION/bin:$PATH

 WORKDIR /tmp
 # 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 && \
+ENV CABAL_VERSION 3.0.0.0
+RUN curl -L 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.