Simpler GitHub Actions CI

.github/install-nim.sh

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+#!/bin/bash
+# Heavily borrowed from https://github.com/alaviss/setup-nim/blob/master/setup.sh
+# So I guess that makes this GPL?  Can someone add a license here if it's needed.
+
+usage() {
+  cat <<EOF
+This script will install Nim for GitHub Actions from a variety of
+sources.  Provide a single command-line argument of the following
+format:
+
+  From source by downloading a tarball:
+
+    $0 sourcetar:https://github.com/nim-lang/nightlies/releases/download/latest-version-1-0/source.tar.xz
+
+  From a published release version:
+
+    $0 release:1.4.0
+
+  From a prebuilt nightly binary:
+
+    $0 nightly:https://github.com/nim-lang/nightlies/releases/latest-version-1-0/
+    $0 nightly:https://github.com/nim-lang/nightlies/releases/tag/2020-10-26-version-1-0-0ca09f64cf6ecf2050b58bc26ebc622f856b4dc2
+
+  From a specific Git SHA or branch of the github.com/nim-lang/Nim.git repo:
+
+    $0 git:2382937843092342342556456
+    $0 git:devel
+
+  Using choosenim:
+
+    $0 choosenim:stable
+    $0 choosenim:1.4.0
+
+Set NIMDIR=path/where/nim/will/be
+EOF
+}
+set +x
+NIMDIR=${NIMDIR:-nim}
+
+
+abspath() {
+  python -c "import os; import sys; print(os.path.realpath(sys.argv[1]))" "$1"
+}
+add-path() {
+  echo "$1" >> "$GITHUB_PATH"
+  export PATH="$1:$PATH"
+  echo "Directory '$1' has been added to PATH."
+}
+
+guess_archive_name() {
+  # Guess the archive name 
+  local ext=.tar.xz
+  local os; os=$(uname)
+  os=$(tr '[:upper:]' '[:lower:]' <<< "$os")
+  case "$os" in
+    'darwin')
+      os=macosx
+      ;;
+    'windows_nt'|mingw*)
+      os=windows
+      ext=.zip
+      ;;
+  esac
+  local arch; arch=$(uname -m)
+  case "$arch" in
+    aarch64)
+      arch=arm64 ;;
+    armv7l)
+      arch=arm ;;
+    i*86)
+      arch=x32 ;;
+    x86_64)
+      arch=x64 ;;
+  esac
+  echo "${os}_${arch}${ext}"
+}
+
+unpack_prebuilt() {
+  archive_url=$1
+  archive_name=${archive_url##*/}
+  echo "archive name: $archive_name"
+
+  echo "Creating output dir..."
+  mkdir -p "$NIMDIR"
+  cd "$NIMDIR"
+
+  echo "Downloading $archive_url ..."
+  if ! curl -f -LO "$archive_url"; then
+    echo "Failed to download"
+    exit 1
+  fi
+  echo "Extracting $archive_name to $(pwd)"
+  if [[ $archive_name == *.zip ]]; then
+    tmpdir=$(mktemp -d)
+    7z x "$archive_name" "-o$tmpdir"
+    extracted=( "$tmpdir"/* )
+    mv "${extracted[0]}/"* .
+    rm -rf "$tmpdir"
+    unset tmpdir
+  else
+    tar -xf "$archive_name" --strip-components 1
+  fi
+}
+
+build_nim() {
+  if [ -e build.sh ]; then
+    sh build.sh
+  else
+    sh build_all.sh
+  fi
+  bin/nim c koch
+  ./koch boot -d:release
+}
+
+#------------------------------------------------
+# Install a published released version of Nim
+#------------------------------------------------
+install_release() {
+  version=$1
+  echo "Installing Nim ${version}"
+  local os; os=$(uname)
+  if [ "$os" == "Darwin" ]; then
+    # macos: install from source
+    install_sourcetar "https://nim-lang.org/download/nim-${version}.tar.xz"
+  elif [ "$os" == "Linux" ]; then
+    # linux: install from binary
+    archive_name=$(guess_archive_name)
+    echo "Archive pattern: $archive_name"
+    url="https://nim-lang.org/download/nim-${version}-${archive_name}"
+    echo "Guessed URL: $url"
+    unpack_prebuilt "$url"
+  else
+    # windows: install from binary
+    archive_name=$(guess_archive_name)
+    if echo "$archive_name" | grep x64; then
+      url="https://nim-lang.org/download/nim-${version}_x64.zip"
+    else
+      url="https://nim-lang.org/download/nim-${version}_x32.zip"
+    fi
+    echo "Guessed URL: $url"
+    unpack_prebuilt "$url"
+  fi
+}
+
+#------------------------------------------------
+# Install from a git SHA/branch
+#------------------------------------------------
+install_git() {
+  shalike=$1
+  echo "Installing from Git: ${shalike}"
+  git clone -n https://github.com/nim-lang/Nim.git "$NIMDIR"
+  cd "$NIMDIR"
+  git checkout "$shalike"
+  ls -al
+  build_nim
+}
+
+#------------------------------------------------
+# Install from a source tarball URL
+#------------------------------------------------
+install_sourcetar() {
+  tarurl=$1
+  echo "Installing from source: $tarurl"
+  curl -L -o source.tar.xz "$tarurl"
+  mkdir -p nimtmp
+  tar xf source.tar.xz -C nimtmp
+  cd nimtmp
+  mv $(ls) "../$NIMDIR"
+  cd ..
+  rm source.tar.xz
+  rm -r nimtmp
+  cd "$NIMDIR"
+  build_nim
+}
+
+#------------------------------------------------
+# Install nightly prebuild binaries
+# from a GitHub release URL
+#------------------------------------------------
+install_nightly() {
+  url=${1%/}
+  echo "Installing prebuilt binaries from: $url"
+  archive_name=$(guess_archive_name)
+  echo "Archive pattern: $archive_name"
+  local archive_url; archive_url=
+  tag=${url##*/}
+  echo "tag: $tag"
+  archive_url=$(curl -H "Accept: application/vnd.github.v3+json" "https://api.github.com/repos/nim-lang/nightlies/releases/tags/$tag" | grep '"browser_download_url"' | grep "$archive_name" | head -n1 | cut -d'"' -f4)
+  if [ -z "$archive_url" ]; then
+    echo "ERROR: unable to find archive for $archive_name"
+    exit 1
+  fi
+  echo "archive url: $archive_url"
+  unpack_prebuilt "$archive_url"
+}
+
+#------------------------------------------------
+# Install using choosenim
+#------------------------------------------------
+install_choosenim() {
+  target="$1"
+  echo "Installing via choosenim for: $target"
+  export CHOOSENIM_NO_ANALYTICS=1
+  curl https://nim-lang.org/choosenim/init.sh -sSf | sh -s -- -y
+  add-path "$HOME/.nimble/bin"
+  add-path "$(abspath "$HOME/.nimble/bin")"
+  choosenim "$target"
+}
+
+#------------------------------------------------
+# main
+#------------------------------------------------
+set -e
+TARGET=$1
+if [ -z "$TARGET" ]; then
+  usage
+  exit 1
+fi
+
+install_type=$(echo "$TARGET" | cut -d: -f1)
+install_arg=$(echo "$TARGET" | cut -d: -f2-)
+
+#------------------------------------------------
+# Install Nim
+#------------------------------------------------
+echo "Install type: $install_type"
+echo "       param: $install_arg"
+(install_${install_type} "${install_arg}")
+
+#------------------------------------------------
+# Set up PATH
+#------------------------------------------------
+if [ -z "$GITHUB_PATH" ]; then
+  echo "Not setting up PATH since GITHUB_PATH is not defined"
+else
+  echo "Setting up PATH"
+  add-path "$(abspath "$NIMDIR/bin")"
+  add-path "$(pwd)/$NIMDIR/bin"
+  add-path "$HOME/.nimble/bin"
+fi

.github/workflows/ci.yml

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+name: test
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  test:
+    strategy:
+      matrix:
+        os:
+          - windows-latest
+          - macos-latest
+          - ubuntu-latest
+        target:
+          ## Uncomment whichever builds you want:
+          ##   nightly:   download pre-built binaries (this is the fastest on all OSes)
+          ##   release:   download official releases (binaries for linux/win, build from source on macOS)
+          ##   sourcetar: download source archive and build
+          ##   git:       check out a specific tag/commit/branch and build source
+          # - nightly:https://github.com/nim-lang/nightlies/releases/latest-version-1-0/
+          # - nightly:https://github.com/nim-lang/nightlies/releases/latest-version-1-2/
+          # - nightly:https://github.com/nim-lang/nightlies/releases/latest-version-1-4/
+          - nightly:https://github.com/nim-lang/nightlies/releases/tag/2020-11-11-devel-bbe49a14ae827b6474d692042406716a3b3dd71f
+          # - sourcetar:https://github.com/nim-lang/nightlies/releases/download/latest-version-1-0/source.tar.xz
+          # - sourcetar:https://github.com/nim-lang/nightlies/releases/download/latest-version-1-2/source.tar.xz
+          # - sourcetar:https://github.com/nim-lang/nightlies/releases/download/latest-version-1-4/source.tar.xz
+          # - sourcetar:https://github.com/nim-lang/nightlies/releases/download/2020-11-11-devel-bbe49a14ae827b6474d692042406716a3b3dd71f/nim-1.5.1.tar.xz
+          # - release:1.4.0
+          # - release:1.2.8
+          # - release:1.0.10
+          # - git:devel
+          # - git:bbe49a14ae827b6474d692042406716a3b3dd71f
+          # - choosenim:stable
+          - choosenim:1.4.0
+          - choosenim:1.2.8
+          - choosenim:1.0.10
+          # - choosenim:devel
+          # - choosenim:0.20.0
+    name: ${{ matrix.os }} - ${{ matrix.target }}
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install Nim
+        shell: bash
+        run: bash .github/install-nim.sh ${{ matrix.target }}
+      - run: nim --version
+      - name: Run nim c -r tester
+        run: |
+          cd tests
+          nim c -r tester
+      - run: ./src/nimble install -y