From fd008f0d8069abb8bba74412da8fd320d0754604 Mon Sep 17 00:00:00 2001
From: Fraser Tweedale <frase@frase.id.au>
Date: Tue, 6 Sep 2022 12:05:32 +1000
Subject: [PATCH] Implement GitHub matrix job limit check

GitHub has a limit of 256 jobs.  Validate that the size of the
matrix does not exceed this limit.
---
 fixtures/matrix-extra-toomany.args    |   2 +
 fixtures/matrix-extra-toomany.bash    | 520 ++++++++++++++++++++++++++
 fixtures/matrix-extra-toomany.github  |   2 +
 fixtures/matrix-extra-toomany.project |   1 +
 fixtures/matrix-extra-toomany.travis  | 298 +++++++++++++++
 src/HaskellCI/GitHub.hs               |  13 +
 test/Tests.hs                         |   1 +
 7 files changed, 837 insertions(+)
 create mode 100644 fixtures/matrix-extra-toomany.args
 create mode 100644 fixtures/matrix-extra-toomany.bash
 create mode 100644 fixtures/matrix-extra-toomany.github
 create mode 100644 fixtures/matrix-extra-toomany.project
 create mode 100644 fixtures/matrix-extra-toomany.travis

diff --git a/fixtures/matrix-extra-toomany.args b/fixtures/matrix-extra-toomany.args
new file mode 100644
index 00000000..6b69595d
--- /dev/null
+++ b/fixtures/matrix-extra-toomany.args
@@ -0,0 +1,2 @@
+--matrix-extra=abc:1,2,3
+--matrix-extra=foo:bar,baz
diff --git a/fixtures/matrix-extra-toomany.bash b/fixtures/matrix-extra-toomany.bash
new file mode 100644
index 00000000..a2982a09
--- /dev/null
+++ b/fixtures/matrix-extra-toomany.bash
@@ -0,0 +1,520 @@
+# SUCCESS
+# *INFO* Generating Bash script for testing for GHC versions: 7.0.1 7.0.2 7.0.3 7.0.4 7.2.1 7.2.2 7.4.1 7.4.2 7.6.1 7.6.2 7.6.3 7.8.1 7.8.2 7.8.3 7.8.4 7.10.1 7.10.2 7.10.3 8.0.1 8.0.2 8.2.1 8.2.2 8.4.1 8.4.2 8.4.3 8.4.4 8.6.1 8.6.2 8.6.3 8.6.4 8.6.5 8.8.1 8.8.2 8.8.3 8.8.4 8.10.1 8.10.2 8.10.3 8.10.4 8.10.5 8.10.6 8.10.7 9.0.1 9.0.2 9.2.1 9.2.2 9.2.3 9.2.4 9.4.1 9.4.2 ghcjs-8.4
+#!/bin/bash
+# shellcheck disable=SC2086,SC2016,SC2046
+# REGENDATA ["--matrix-extra=abc:1,2,3","--matrix-extra=foo:bar,baz","bash","matrix-extra-toomany.project"]
+
+set -o pipefail
+
+# Mode
+##############################################################################
+
+if [ "$1" = "indocker" ]; then
+    INDOCKER=true
+    shift
+else
+    INDOCKER=false
+fi
+
+# Run configuration
+##############################################################################
+
+CFG_CABAL_STORE_CACHE=""
+CFG_CABAL_REPO_CACHE=""
+CFG_JOBS="9.4.2 9.4.1 9.2.4 9.2.3 9.2.2 9.2.1 9.0.2 9.0.1 8.10.7 8.10.6 8.10.5 8.10.4 8.10.3 8.10.2 8.10.1 8.8.4 8.8.3 8.8.2 8.8.1 8.6.5 8.6.4 8.6.3 8.6.2 8.6.1 8.4.4 8.4.3 8.4.2 8.4.1 8.2.2 8.2.1 8.0.2 8.0.1 7.10.3 7.10.2 7.10.1 7.8.4 7.8.3 7.8.2 7.8.1 7.6.3 7.6.2 7.6.1 7.4.2 7.4.1 7.2.2 7.2.1 7.0.4 7.0.3 7.0.2 7.0.1"
+CFG_CABAL_UPDATE=false
+
+SCRIPT_NAME=$(basename "$0")
+START_TIME="$(date +'%s')"
+
+XDG_CONFIG_HOME=${XDG_CONFIG_HOME:-$HOME/.config}
+
+# Job configuration
+##############################################################################
+
+GHC_VERSION="non-existing"
+CABAL_VERSION=3.2
+HEADHACKAGE=false
+
+# Locale
+##############################################################################
+
+export LC_ALL=C.UTF-8
+
+# Utilities
+##############################################################################
+
+SGR_RED='\033[1;31m'
+SGR_GREEN='\033[1;32m'
+SGR_BLUE='\033[1;34m'
+SGR_CYAN='\033[1;96m'
+SGR_RESET='\033[0m' # No Color
+
+put_info() {
+    printf "$SGR_CYAN%s$SGR_RESET\n" "### $*"
+}
+
+put_error() {
+    printf "$SGR_RED%s$SGR_RESET\n" "!!! $*"
+}
+
+run_cmd() {
+    local PRETTYCMD="$*"
+    local PROMPT
+    if $INDOCKER; then
+        PROMPT="$(pwd) >>>"
+    else
+        PROMPT=">>>"
+    fi
+
+    printf "$SGR_BLUE%s %s$SGR_RESET\n" "$PROMPT" "$PRETTYCMD"
+
+    local start_time end_time cmd_duration total_duration
+    start_time=$(date +'%s')
+
+    "$@"
+    local RET=$?
+
+    end_time=$(date +'%s')
+    cmd_duration=$((end_time - start_time))
+    total_duration=$((end_time - START_TIME))
+
+    cmd_min=$((cmd_duration / 60))
+    cmd_sec=$((cmd_duration % 60))
+
+    total_min=$((total_duration / 60))
+    total_sec=$((total_duration % 60))
+
+    if [ $RET -eq 0 ]; then
+        printf "$SGR_GREEN%s$SGR_RESET (%dm%02ds; %dm%02ds)\n" "<<< $PRETTYCMD" "$cmd_min" "$cmd_sec" "$total_min" "$total_sec"
+    else
+        printf "$SGR_RED%s$SGR_RESET\n" "!!! $PRETTYCMD"
+        exit 1
+    fi
+}
+
+run_cmd_if() {
+    local COND=$1
+    shift
+
+    if [ $COND -eq 1 ]; then
+        run_cmd "$@"
+    else
+        local PRETTYCMD="$*"
+        local PROMPT
+        PROMPT="$(pwd) (skipping) >>>"
+
+        printf "$SGR_BLUE%s %s$SGR_RESET\n" "$PROMPT" "$PRETTYCMD"
+    fi
+}
+
+run_cmd_unchecked() {
+    local PRETTYCMD="$*"
+    local PROMPT
+    if $INDOCKER; then
+        PROMPT="$(pwd) >>>"
+    else
+        PROMPT=">>>"
+    fi
+
+    printf "$SGR_BLUE%s %s$SGR_RESET\n" "$PROMPT" "$PRETTYCMD"
+
+    local start_time end_time cmd_duration total_duration cmd_min cmd_sec total_min total_sec
+    start_time=$(date +'%s')
+
+    "$@"
+
+    end_time=$(date +'%s')
+    cmd_duration=$((end_time - start_time))
+    total_duration=$((end_time - START_TIME))
+
+    cmd_min=$((cmd_duration / 60))
+    cmd_sec=$((cmd_duration % 60))
+
+    total_min=$((total_duration / 60))
+    total_sec=$((total_duration % 60))
+
+    printf "$SGR_GREEN%s$SGR_RESET (%dm%02ds; %dm%02ds)\n" "<<< $PRETTYCMD" "$cmd_min" "$cmd_sec" "$total_min" "$total_sec"
+}
+
+change_dir() {
+    local DIR=$1
+    if [ -d "$DIR" ]; then
+        printf "$SGR_BLUE%s$SGR_RESET\n" "change directory to $DIR"
+        cd "$DIR" || exit 1
+    else
+        printf "$SGR_RED%s$SGR_RESET\n" "!!! cd $DIR"
+        exit 1
+    fi
+}
+
+change_dir_if() {
+    local COND=$1
+    local DIR=$2
+
+    if [ $COND -ne 0 ]; then
+        change_dir "$DIR"
+    fi
+}
+
+echo_to() {
+    local DEST=$1
+    local CONTENTS=$2
+
+    echo "$CONTENTS" >> "$DEST"
+}
+
+echo_if_to() {
+    local COND=$1
+    local DEST=$2
+    local CONTENTS=$3
+
+    if [ $COND -ne 0 ]; then
+        echo_to "$DEST" "$CONTENTS"
+    fi
+}
+
+install_cabalplan() {
+    put_info "installing cabal-plan"
+
+    if [ ! -e $CABAL_REPOCACHE/downloads/cabal-plan ]; then
+        curl -L https://github.com/haskell-hvr/cabal-plan/releases/download/v0.6.2.0/cabal-plan-0.6.2.0-x86_64-linux.xz > /tmp/cabal-plan.xz || exit 1
+        (cd /tmp && echo "de73600b1836d3f55e32d80385acc055fd97f60eaa0ab68a755302685f5d81bc  cabal-plan.xz" | sha256sum -c -)|| exit 1
+        mkdir -p $CABAL_REPOCACHE/downloads
+        xz -d < /tmp/cabal-plan.xz > $CABAL_REPOCACHE/downloads/cabal-plan || exit 1
+        chmod a+x $CABAL_REPOCACHE/downloads/cabal-plan || exit 1
+    fi
+
+    mkdir -p $CABAL_DIR/bin || exit 1
+    ln -s $CABAL_REPOCACHE/downloads/cabal-plan $CABAL_DIR/bin/cabal-plan || exit 1
+}
+
+# Help
+##############################################################################
+
+show_usage() {
+cat <<EOF
+./haskell-ci.sh - build & test
+
+Usage: ./haskell-ci.sh [options]
+  A script to run automated checks locally (using Docker)
+
+Available options:
+  --jobs JOBS               Jobs to run (default: $CFG_JOBS)
+  --cabal-store-cache PATH  Directory to use for cabal-store-cache
+  --cabal-repo-cache PATH   Directory to use for cabal-repo-cache
+  --skip-cabal-update       Skip cabal update (useful with --cabal-repo-cache)
+  --no-skip-cabal-update
+  --help                    Print this message
+
+EOF
+}
+
+# getopt
+#######################################################################
+
+process_cli_options() {
+    while [ $# -gt 0 ]; do
+        arg=$1
+        case $arg in
+            --help)
+                show_usage
+                exit
+                ;;
+            --jobs)
+                CFG_JOBS=$2
+                shift
+                shift
+                ;;
+            --cabal-store-cache)
+                CFG_CABAL_STORE_CACHE=$2
+                shift
+                shift
+                ;;
+            --cabal-repo-cache)
+                CFG_CABAL_REPO_CACHE=$2
+                shift
+                shift
+                ;;
+            --skip-cabal-update)
+                CFG_CABAL_UPDATE=false
+                shift
+                ;;
+            --no-skip-cabal-update)
+                CFG_CABAL_UPDATE=true
+                shift
+                ;;
+            *)
+                echo "Unknown option $arg"
+                exit 1
+        esac
+    done
+}
+
+process_indocker_options () {
+    while [ $# -gt 0 ]; do
+        arg=$1
+
+        case $arg in
+            --ghc-version)
+                GHC_VERSION=$2
+                shift
+                shift
+                ;;
+            --cabal-version)
+                CABAL_VERSION=$2
+                shift
+                shift
+                ;;
+            --start-time)
+                START_TIME=$2
+                shift
+                shift
+                ;;
+            --cabal-update)
+                CABAL_UPDATE=$2
+                shift
+                shift
+                ;;
+            *)
+                echo "Unknown option $arg"
+                exit 1
+        esac
+    done
+}
+
+if $INDOCKER; then
+    process_indocker_options "$@"
+
+else
+    if [ -f "$XDG_CONFIG_HOME/haskell-ci/bash.config" ]; then
+        process_cli_options $(cat "$XDG_CONFIG_HOME/haskell-ci/bash.config")
+    fi
+
+    process_cli_options "$@"
+
+    put_info "jobs:              $CFG_JOBS"
+    put_info "cabal-store-cache: $CFG_CABAL_STORE_CACHE"
+    put_info "cabal-repo-cache:  $CFG_CABAL_REPO_CACHE"
+    put_info "cabal-update:      $CFG_CABAL_UPDATE"
+fi
+
+# Constants
+##############################################################################
+
+SRCDIR=/hsci/src
+BUILDDIR=/hsci/build
+CABAL_DIR="$BUILDDIR/cabal"
+CABAL_REPOCACHE=/hsci/cabal-repocache
+CABAL_STOREDIR=/hsci/store
+
+# Docker invoke
+##############################################################################
+
+# if cache directory is specified, use it.
+# Otherwise use another tmpfs host
+if [ -z "$CFG_CABAL_STORE_CACHE" ]; then
+    CABALSTOREARG="--tmpfs $CABAL_STOREDIR:exec"
+else
+    CABALSTOREARG="--volume $CFG_CABAL_STORE_CACHE:$CABAL_STOREDIR"
+fi
+
+if [ -z "$CFG_CABAL_REPO_CACHE" ]; then
+    CABALREPOARG="--tmpfs $CABAL_REPOCACHE:exec"
+else
+    CABALREPOARG="--volume $CFG_CABAL_REPO_CACHE:$CABAL_REPOCACHE"
+fi
+
+echo_docker_cmd() {
+    local GHCVER=$1
+
+    # TODO: mount /hsci/src:ro (readonly)
+    echo docker run \
+        --tty \
+        --interactive \
+        --rm \
+        --label haskell-ci \
+        --volume "$(pwd):/hsci/src" \
+        $CABALSTOREARG \
+        $CABALREPOARG \
+        --tmpfs /tmp:exec \
+        --tmpfs /hsci/build:exec \
+        --workdir /hsci/build \
+        "phadej/ghc:$GHCVER-bionic" \
+        "/bin/bash" "/hsci/src/$SCRIPT_NAME" indocker \
+        --ghc-version "$GHCVER" \
+        --cabal-update "$CFG_CABAL_UPDATE" \
+        --start-time "$START_TIME"
+}
+
+# if we are not in docker, loop through jobs
+if ! $INDOCKER; then
+    for JOB in $CFG_JOBS; do
+        put_info "Running in docker: $JOB"
+        run_cmd $(echo_docker_cmd "$JOB")
+    done
+
+    run_cmd echo "ALL OK"
+    exit 0
+fi
+
+# Otherwise we are in docker, and the rest of script executes
+put_info "In docker"
+
+# Environment
+##############################################################################
+
+GHCDIR=/opt/ghc/$GHC_VERSION
+
+HC=$GHCDIR/bin/ghc
+HCPKG=$GHCDIR/bin/ghc-pkg
+HADDOCK=$GHCDIR/bin/haddock
+
+CABAL=/opt/cabal/$CABAL_VERSION/bin/cabal
+
+CABAL="$CABAL -vnormal+nowrap"
+
+export CABAL_DIR
+export CABAL_CONFIG="$BUILDDIR/cabal/config"
+
+PATH="$CABAL_DIR/bin:$PATH"
+
+# HCNUMVER
+HCNUMVER=$(${HC} --numeric-version|perl -ne '/^(\d+)\.(\d+)\.(\d+)(\.(\d+))?$/; print(10000 * $1 + 100 * $2 + ($3 == 0 ? $5 != 1 : $3))')
+GHCJSARITH=0
+
+put_info "HCNUMVER: $HCNUMVER"
+
+# Args for shorter/nicer commands
+if [ $((GHCJSARITH || ! GHCJSARITH)) -ne 0 ] ; then ARG_TESTS=--enable-tests; else ARG_TESTS=--disable-tests; fi
+if [ $((GHCJSARITH || ! GHCJSARITH)) -ne 0 ] ; then ARG_BENCH=--enable-benchmarks; else ARG_BENCH=--disable-benchmarks; fi
+ARG_COMPILER="--ghc --with-compiler=$HC"
+
+put_info "tests/benchmarks: $ARG_TESTS $ARG_BENCH"
+
+# Apt dependencies
+##############################################################################
+
+
+# Cabal config
+##############################################################################
+
+mkdir -p $BUILDDIR/cabal
+
+cat > $BUILDDIR/cabal/config <<EOF
+remote-build-reporting: anonymous
+write-ghc-environment-files: always
+remote-repo-cache: $CABAL_REPOCACHE
+logs-dir:          $CABAL_DIR/logs
+world-file:        $CABAL_DIR/world
+extra-prog-path:   $CABAL_DIR/bin
+symlink-bindir:    $CABAL_DIR/bin
+installdir:        $CABAL_DIR/bin
+build-summary:     $CABAL_DIR/logs/build.log
+store-dir:         $CABAL_STOREDIR
+install-dirs user
+  prefix: $CABAL_DIR
+repository hackage.haskell.org
+  url: http://hackage.haskell.org/
+EOF
+
+if $HEADHACKAGE; then
+    put_error "head.hackage is not implemented"
+    exit 1
+fi
+
+run_cmd cat "$BUILDDIR/cabal/config"
+
+# Version
+##############################################################################
+
+put_info "Versions"
+run_cmd $HC --version
+run_cmd_unchecked $HC --print-project-git-commit-id
+run_cmd $CABAL --version
+
+# Build script
+##############################################################################
+
+# update cabal index
+if $CABAL_UPDATE; then
+    put_info "Updating Hackage index"
+    run_cmd $CABAL v2-update -v
+fi
+
+# install cabal-plan
+install_cabalplan
+run_cmd cabal-plan --version
+
+# initial cabal.project for sdist
+put_info "initial cabal.project for sdist"
+change_dir "$BUILDDIR"
+run_cmd touch cabal.project
+echo_to cabal.project "packages: $SRCDIR/splitmix"
+run_cmd cat cabal.project
+
+# sdist
+put_info "sdist"
+run_cmd mkdir -p "$BUILDDIR/sdist"
+run_cmd $CABAL sdist all --output-dir "$BUILDDIR/sdist"
+
+# unpack
+put_info "unpack"
+change_dir "$BUILDDIR"
+run_cmd mkdir -p "$BUILDDIR/unpacked"
+run_cmd find "$BUILDDIR/sdist" -maxdepth 1 -type f -name '*.tar.gz' -exec tar -C "$BUILDDIR/unpacked" -xzvf {} \;
+
+# generate cabal.project
+put_info "generate cabal.project"
+PKGDIR_splitmix="$(find "$BUILDDIR/unpacked" -maxdepth 1 -type d -regex '.*/splitmix-[0-9.]*')"
+run_cmd touch cabal.project
+run_cmd touch cabal.project.local
+echo_to cabal.project "packages: ${PKGDIR_splitmix}"
+echo_if_to $((GHCJSARITH || ! GHCJSARITH && HCNUMVER >= 80200)) cabal.project "package splitmix"
+echo_if_to $((GHCJSARITH || ! GHCJSARITH && HCNUMVER >= 80200)) cabal.project "    ghc-options: -Werror=missing-methods"
+cat >> cabal.project <<EOF
+EOF
+$HCPKG list --simple-output --names-only | perl -ne 'for (split /\s+/) { print "constraints: $_ installed\n" unless /^(splitmix)$/; }' >> cabal.project.local
+run_cmd cat cabal.project
+run_cmd cat cabal.project.local
+
+# dump install plan
+put_info "dump install plan"
+run_cmd $CABAL v2-build $ARG_COMPILER $ARG_TESTS $ARG_BENCH --dry-run all
+run_cmd cabal-plan
+
+# install dependencies
+put_info "install dependencies"
+run_cmd $CABAL v2-build $ARG_COMPILER --disable-tests --disable-benchmarks --dependencies-only -j all
+run_cmd $CABAL v2-build $ARG_COMPILER $ARG_TESTS $ARG_BENCH --dependencies-only -j all
+
+# build w/o tests
+put_info "build w/o tests"
+run_cmd $CABAL v2-build $ARG_COMPILER --disable-tests --disable-benchmarks all
+
+# build
+put_info "build"
+run_cmd $CABAL v2-build $ARG_COMPILER $ARG_TESTS $ARG_BENCH all
+
+# tests
+put_info "tests"
+run_cmd_if $((! GHCJSARITH)) $CABAL v2-test $ARG_COMPILER $ARG_TESTS $ARG_BENCH all --test-show-details=direct
+
+# cabal check
+put_info "cabal check"
+change_dir "${PKGDIR_splitmix}"
+run_cmd ${CABAL} -vnormal check
+change_dir "$BUILDDIR"
+
+# haddock
+put_info "haddock"
+run_cmd_if $((! GHCJSARITH)) $CABAL v2-haddock --haddock-all $ARG_COMPILER --with-haddock $HADDOCK $ARG_TESTS $ARG_BENCH all
+
+# unconstrained build
+put_info "unconstrained build"
+run_cmd rm -f cabal.project.local
+run_cmd $CABAL v2-build $ARG_COMPILER --disable-tests --disable-benchmarks all
+
+
+# Done
+run_cmd echo OK
diff --git a/fixtures/matrix-extra-toomany.github b/fixtures/matrix-extra-toomany.github
new file mode 100644
index 00000000..acab2e75
--- /dev/null
+++ b/fixtures/matrix-extra-toomany.github
@@ -0,0 +1,2 @@
+# FAILURE
+# *ERROR* The matrix has 306 jobs, exceeding the limit of 256.
diff --git a/fixtures/matrix-extra-toomany.project b/fixtures/matrix-extra-toomany.project
new file mode 100644
index 00000000..b1f6a74e
--- /dev/null
+++ b/fixtures/matrix-extra-toomany.project
@@ -0,0 +1 @@
+packages: splitmix
diff --git a/fixtures/matrix-extra-toomany.travis b/fixtures/matrix-extra-toomany.travis
new file mode 100644
index 00000000..c70073f4
--- /dev/null
+++ b/fixtures/matrix-extra-toomany.travis
@@ -0,0 +1,298 @@
+# SUCCESS
+# *INFO* Generating Travis-CI config for testing for GHC versions: 7.0.1 7.0.2 7.0.3 7.0.4 7.2.1 7.2.2 7.4.1 7.4.2 7.6.1 7.6.2 7.6.3 7.8.1 7.8.2 7.8.3 7.8.4 7.10.1 7.10.2 7.10.3 8.0.1 8.0.2 8.2.1 8.2.2 8.4.1 8.4.2 8.4.3 8.4.4 8.6.1 8.6.2 8.6.3 8.6.4 8.6.5 8.8.1 8.8.2 8.8.3 8.8.4 8.10.1 8.10.2 8.10.3 8.10.4 8.10.5 8.10.6 8.10.7 9.0.1 9.0.2 9.2.1 9.2.2 9.2.3 9.2.4 9.4.1 9.4.2 ghcjs-8.4
+# This Travis job script has been generated by a script via
+#
+#   haskell-ci '--matrix-extra=abc:1,2,3' '--matrix-extra=foo:bar,baz' 'travis' 'matrix-extra-toomany.project'
+#
+# To regenerate the script (for example after adjusting tested-with) run
+#
+#   haskell-ci regenerate
+#
+# For more information, see https://github.com/haskell-CI/haskell-ci
+#
+version: ~> 1.0
+language: c
+os: linux
+dist: bionic
+git:
+  # whether to recursively clone submodules
+  submodules: false
+cache:
+  directories:
+    - $HOME/.cabal/packages
+    - $HOME/.cabal/store
+    - $HOME/.hlint
+before_cache:
+  - rm -fv $CABALHOME/packages/hackage.haskell.org/build-reports.log
+  # remove files that are regenerated by 'cabal update'
+  - rm -fv $CABALHOME/packages/hackage.haskell.org/00-index.*
+  - rm -fv $CABALHOME/packages/hackage.haskell.org/*.json
+  - rm -fv $CABALHOME/packages/hackage.haskell.org/01-index.cache
+  - rm -fv $CABALHOME/packages/hackage.haskell.org/01-index.tar
+  - rm -fv $CABALHOME/packages/hackage.haskell.org/01-index.tar.idx
+  - rm -rfv $CABALHOME/packages/head.hackage
+jobs:
+  include:
+    - compiler: ghcjs-8.4
+      addons: {"apt":{"packages":["ghcjs-8.4","cabal-install-3.4","ghc-8.4.4","nodejs"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"},{"sourceline":"deb http://ppa.launchpad.net/hvr/ghcjs/ubuntu bionic main"},{"key_url":"https://deb.nodesource.com/gpgkey/nodesource.gpg.key","sourceline":"deb https://deb.nodesource.com/node_10.x bionic main"}]}}
+      os: linux
+    - compiler: ghc-9.4.2
+      addons: {"apt":{"packages":["ghc-9.4.2","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-9.4.1
+      addons: {"apt":{"packages":["ghc-9.4.1","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-9.2.4
+      addons: {"apt":{"packages":["ghc-9.2.4","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-9.2.3
+      addons: {"apt":{"packages":["ghc-9.2.3","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-9.2.2
+      addons: {"apt":{"packages":["ghc-9.2.2","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-9.2.1
+      addons: {"apt":{"packages":["ghc-9.2.1","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-9.0.2
+      addons: {"apt":{"packages":["ghc-9.0.2","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-9.0.1
+      addons: {"apt":{"packages":["ghc-9.0.1","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-8.10.7
+      addons: {"apt":{"packages":["ghc-8.10.7","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-8.10.6
+      addons: {"apt":{"packages":["ghc-8.10.6","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-8.10.5
+      addons: {"apt":{"packages":["ghc-8.10.5","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-8.10.4
+      addons: {"apt":{"packages":["ghc-8.10.4","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-8.10.3
+      addons: {"apt":{"packages":["ghc-8.10.3","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-8.10.2
+      addons: {"apt":{"packages":["ghc-8.10.2","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-8.10.1
+      addons: {"apt":{"packages":["ghc-8.10.1","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-8.8.4
+      addons: {"apt":{"packages":["ghc-8.8.4","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-8.8.3
+      addons: {"apt":{"packages":["ghc-8.8.3","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-8.8.2
+      addons: {"apt":{"packages":["ghc-8.8.2","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-8.8.1
+      addons: {"apt":{"packages":["ghc-8.8.1","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-8.6.5
+      addons: {"apt":{"packages":["ghc-8.6.5","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-8.6.4
+      addons: {"apt":{"packages":["ghc-8.6.4","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-8.6.3
+      addons: {"apt":{"packages":["ghc-8.6.3","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-8.6.2
+      addons: {"apt":{"packages":["ghc-8.6.2","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-8.6.1
+      addons: {"apt":{"packages":["ghc-8.6.1","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-8.4.4
+      addons: {"apt":{"packages":["ghc-8.4.4","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-8.4.3
+      addons: {"apt":{"packages":["ghc-8.4.3","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-8.4.2
+      addons: {"apt":{"packages":["ghc-8.4.2","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-8.4.1
+      addons: {"apt":{"packages":["ghc-8.4.1","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-8.2.2
+      addons: {"apt":{"packages":["ghc-8.2.2","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-8.2.1
+      addons: {"apt":{"packages":["ghc-8.2.1","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-8.0.2
+      addons: {"apt":{"packages":["ghc-8.0.2","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-8.0.1
+      addons: {"apt":{"packages":["ghc-8.0.1","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-7.10.3
+      addons: {"apt":{"packages":["ghc-7.10.3","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-7.10.2
+      addons: {"apt":{"packages":["ghc-7.10.2","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-7.10.1
+      addons: {"apt":{"packages":["ghc-7.10.1","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-7.8.4
+      addons: {"apt":{"packages":["ghc-7.8.4","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-7.8.3
+      addons: {"apt":{"packages":["ghc-7.8.3","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-7.8.2
+      addons: {"apt":{"packages":["ghc-7.8.2","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-7.8.1
+      addons: {"apt":{"packages":["ghc-7.8.1","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-7.6.3
+      addons: {"apt":{"packages":["ghc-7.6.3","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-7.6.2
+      addons: {"apt":{"packages":["ghc-7.6.2","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-7.6.1
+      addons: {"apt":{"packages":["ghc-7.6.1","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-7.4.2
+      addons: {"apt":{"packages":["ghc-7.4.2","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-7.4.1
+      addons: {"apt":{"packages":["ghc-7.4.1","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-7.2.2
+      addons: {"apt":{"packages":["ghc-7.2.2","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-7.2.1
+      addons: {"apt":{"packages":["ghc-7.2.1","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-7.0.4
+      addons: {"apt":{"packages":["ghc-7.0.4","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-7.0.3
+      addons: {"apt":{"packages":["ghc-7.0.3","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-7.0.2
+      addons: {"apt":{"packages":["ghc-7.0.2","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+    - compiler: ghc-7.0.1
+      addons: {"apt":{"packages":["ghc-7.0.1","cabal-install-3.6"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
+before_install:
+  - |
+    if echo $CC | grep -q ghcjs; then
+        GHCJS=true; GHCJSARITH=1;
+    else
+        GHCJS=false; GHCJSARITH=0;
+    fi
+  - HC=$(echo "/opt/$CC/bin/ghc" | sed 's/-/\//')
+  - WITHCOMPILER="-w $HC"
+  - if [ $((GHCJSARITH)) -ne 0 ] ; then HC=${HC}js ; fi
+  - if [ $((GHCJSARITH)) -ne 0 ] ; then WITHCOMPILER="--ghcjs ${WITHCOMPILER}js" ; fi
+  - HADDOCK=$(echo "/opt/$CC/bin/haddock" | sed 's/-/\//')
+  - if [ $((GHCJSARITH)) -ne 0 ] ; then PATH="/opt/ghc/8.4.4/bin:$PATH" ; fi
+  - HCPKG="$HC-pkg"
+  - unset CC
+  - CABAL=/opt/ghc/bin/cabal
+  - CABALHOME=$HOME/.cabal
+  - export PATH="$CABALHOME/bin:$PATH"
+  - TOP=$(pwd)
+  - "HCNUMVER=$(${HC} --numeric-version|perl -ne '/^(\\d+)\\.(\\d+)\\.(\\d+)(\\.(\\d+))?$/; print(10000 * $1 + 100 * $2 + ($3 == 0 ? $5 != 1 : $3))')"
+  - echo $HCNUMVER
+  - CABAL="$CABAL -vnormal+nowrap"
+  - set -o pipefail
+  - TEST=--enable-tests
+  - BENCH=--enable-benchmarks
+  - HEADHACKAGE=false
+  - rm -f $CABALHOME/config
+  - |
+    echo "verbose: normal +nowrap +markoutput"          >> $CABALHOME/config
+    echo "remote-build-reporting: anonymous"            >> $CABALHOME/config
+    echo "write-ghc-environment-files: never"           >> $CABALHOME/config
+    echo "remote-repo-cache: $CABALHOME/packages"       >> $CABALHOME/config
+    echo "logs-dir:          $CABALHOME/logs"           >> $CABALHOME/config
+    echo "world-file:        $CABALHOME/world"          >> $CABALHOME/config
+    echo "extra-prog-path:   $CABALHOME/bin"            >> $CABALHOME/config
+    echo "symlink-bindir:    $CABALHOME/bin"            >> $CABALHOME/config
+    echo "installdir:        $CABALHOME/bin"            >> $CABALHOME/config
+    echo "build-summary:     $CABALHOME/logs/build.log" >> $CABALHOME/config
+    echo "store-dir:         $CABALHOME/store"          >> $CABALHOME/config
+    echo "install-dirs user"                            >> $CABALHOME/config
+    echo "  prefix: $CABALHOME"                         >> $CABALHOME/config
+    echo "repository hackage.haskell.org"               >> $CABALHOME/config
+    echo "  url: http://hackage.haskell.org/"           >> $CABALHOME/config
+install:
+  - ${CABAL} --version
+  - echo "$(${HC} --version) [$(${HC} --print-project-git-commit-id 2> /dev/null || echo '?')]"
+  - node --version
+  - echo $GHCJS
+  - |
+    echo "program-default-options"                >> $CABALHOME/config
+    echo "  ghc-options: $GHCJOBS +RTS -M6G -RTS" >> $CABALHOME/config
+  - cat $CABALHOME/config
+  - rm -fv cabal.project cabal.project.local cabal.project.freeze
+  - travis_retry ${CABAL} v2-update -v
+  # Generate cabal.project
+  - rm -rf cabal.project cabal.project.local cabal.project.freeze
+  - touch cabal.project
+  - |
+    echo "packages: splitmix" >> cabal.project
+  - if [ $((GHCJSARITH || ! GHCJSARITH && HCNUMVER >= 80200)) -ne 0 ] ; then echo 'package splitmix' >> cabal.project ; fi
+  - "if [ $((GHCJSARITH || ! GHCJSARITH && HCNUMVER >= 80200)) -ne 0 ] ; then echo '  ghc-options: -Werror=missing-methods' >> cabal.project ; fi"
+  - ""
+  - "for pkg in $($HCPKG list --simple-output); do echo $pkg | sed 's/-[^-]*$//' | (grep -vE -- '^(splitmix)$' || true) | sed 's/^/constraints: /' | sed 's/$/ installed/' >> cabal.project.local; done"
+  - cat cabal.project || true
+  - cat cabal.project.local || true
+  - if [ -f "splitmix/configure.ac" ]; then (cd "splitmix" && autoreconf -i); fi
+  - ${CABAL} v2-freeze $WITHCOMPILER ${TEST} ${BENCH}
+  - "cat cabal.project.freeze | sed -E 's/^(constraints: *| *)//' | sed 's/any.//'"
+  - rm  cabal.project.freeze
+  - travis_wait 40 ${CABAL} v2-build $WITHCOMPILER ${TEST} ${BENCH} --dep -j2 all
+  - travis_wait 40 ${CABAL} v2-build $WITHCOMPILER --disable-tests --disable-benchmarks --dep -j2 all
+script:
+  - DISTDIR=$(mktemp -d /tmp/dist-test.XXXX)
+  # Packaging...
+  - ${CABAL} v2-sdist all
+  # Unpacking...
+  - mv dist-newstyle/sdist/*.tar.gz ${DISTDIR}/
+  - cd ${DISTDIR} || false
+  - find . -maxdepth 1 -type f -name '*.tar.gz' -exec tar -xvf '{}' \;
+  - find . -maxdepth 1 -type f -name '*.tar.gz' -exec rm       '{}' \;
+  - PKGDIR_splitmix="$(find . -maxdepth 1 -type d -regex '.*/splitmix-[0-9.]*')"
+  # Generate cabal.project
+  - rm -rf cabal.project cabal.project.local cabal.project.freeze
+  - touch cabal.project
+  - |
+    echo "packages: ${PKGDIR_splitmix}" >> cabal.project
+  - if [ $((GHCJSARITH || ! GHCJSARITH && HCNUMVER >= 80200)) -ne 0 ] ; then echo 'package splitmix' >> cabal.project ; fi
+  - "if [ $((GHCJSARITH || ! GHCJSARITH && HCNUMVER >= 80200)) -ne 0 ] ; then echo '  ghc-options: -Werror=missing-methods' >> cabal.project ; fi"
+  - ""
+  - "for pkg in $($HCPKG list --simple-output); do echo $pkg | sed 's/-[^-]*$//' | (grep -vE -- '^(splitmix)$' || true) | sed 's/^/constraints: /' | sed 's/$/ installed/' >> cabal.project.local; done"
+  - cat cabal.project || true
+  - cat cabal.project.local || true
+  # Building...
+  # this builds all libraries and executables (without tests/benchmarks)
+  - ${CABAL} v2-build $WITHCOMPILER --disable-tests --disable-benchmarks all
+  # Building with tests and benchmarks...
+  # build & run tests, build benchmarks
+  - ${CABAL} v2-build $WITHCOMPILER ${TEST} ${BENCH} all --write-ghc-environment-files=always
+  # Testing...
+  - if [ $((! GHCJSARITH)) -ne 0 ] ; then ${CABAL} v2-test $WITHCOMPILER ${TEST} ${BENCH} all --test-show-details=direct ; fi
+  # cabal check...
+  - (cd ${PKGDIR_splitmix} && ${CABAL} -vnormal check)
+  # haddock...
+  - if [ $((! GHCJSARITH)) -ne 0 ] ; then ${CABAL} v2-haddock --haddock-all $WITHCOMPILER --with-haddock $HADDOCK ${TEST} ${BENCH} all ; fi
+  # Building without installed constraints for packages in global-db...
+  - rm -f cabal.project.local
+  - ${CABAL} v2-build $WITHCOMPILER --disable-tests --disable-benchmarks all
+
+# REGENDATA ["--matrix-extra=abc:1,2,3","--matrix-extra=foo:bar,baz","travis","matrix-extra-toomany.project"]
+# EOF
diff --git a/src/HaskellCI/GitHub.hs b/src/HaskellCI/GitHub.hs
index bd05937e..939a7dec 100644
--- a/src/HaskellCI/GitHub.hs
+++ b/src/HaskellCI/GitHub.hs
@@ -113,6 +113,13 @@ makeGitHub _argv config@Config {..} gitconfig prj jobs@JobVersions {..} = do
             [ "Using submodules on the GitHub Actions backend requires"
             , "Ubuntu 20.04 (Focal Fossa) or later."
             ]
+    when (length matrix > maxMatrixJobs) $
+        throwErr $ ValidationError $ unwords
+            [ "The matrix has"
+            , show (length matrix)
+            , "jobs, exceeding the limit of"
+            , show maxMatrixJobs ++ "."
+            ]
 
     steps <- sequence $ buildList $ do
         -- This have to be first, since the packages we install depend on
@@ -911,3 +918,9 @@ parseGitHubRepo t =
 -- runners support.
 ghcRunsOnVer :: String
 ghcRunsOnVer = "ubuntu-20.04"
+
+-- | GitHub has a limit of 256 jobs.
+-- See https://docs.github.com/en/actions/using-jobs/using-a-matrix-for-your-jobs#using-a-matrix-strategy
+--
+maxMatrixJobs :: Int
+maxMatrixJobs = 256
diff --git a/test/Tests.hs b/test/Tests.hs
index ae950bb6..ce63bfa1 100644
--- a/test/Tests.hs
+++ b/test/Tests.hs
@@ -31,6 +31,7 @@ main = do
         , fixtureGoldenTest "travis-patch"
         , fixtureGoldenTest "enabled-jobs"
         , fixtureGoldenTest "matrix-extra"
+        , fixtureGoldenTest "matrix-extra-toomany"
         , testGroup "copy-fields"
             [ fixtureGoldenTest "copy-fields-all"
             , fixtureGoldenTest "copy-fields-some"