Fix slow CI by installing a neovim binary directly (#1059)

1 files changed, 83 insertions, 0 deletions

diff --git a/utils/installer/install-neovim-from-release b/utils/installer/install-neovim-from-release
new file mode 100755
index 00000000..a2ba0513
--- /dev/null
+++ b/utils/installer/install-neovim-from-release
@@ -0,0 +1,83 @@
+#!/usr/bin/env bash
+
+set -eu pipefall
+
+declare -r LV_INSTALL_PREFIX="${INSTALL_PREFIX:-"$HOME/.local"}"
+declare -r RELEASE_VER="${RELEASE_VER:-latest}" # can be set to nightly
+
+declare ARCHIVE_NAME
+declare RELEASE_NAME
+declare OS
+
+OS="$(uname -s)"
+
+if [ "$OS" == "Linux" ]; then
+  ARCHIVE_NAME="nvim-linux64"
+  RELEASE_NAME="nvim-linux64"
+elif [ "$OS" == "Darwin" ]; then
+  ARCHIVE_NAME="nvim-macos"
+  # for some reason the archive has a different name
+  RELEASE_NAME="nvim-osx64"
+else
+  echo "$OS platform is not supported currently"
+  exit 1
+fi
+
+declare -r RELEASE_URL="https://github.com/neovim/neovim/releases/$RELEASE_VER/download/$ARCHIVE_NAME.tar.gz"
+declare -r CHECKSUM_URL="$RELEASE_URL.sha256sum"
+
+DOWNLOAD_DIR="$(mktemp -d)"
+readonly DOWNLOAD_DIR
+
+RELEASE_SHA="$(curl -Ls "$CHECKSUM_URL" | awk '{print $1}')"
+readonly RELEASE_SHA
+
+function main() {
+  if [ ! -d "$LV_INSTALL_PREFIX" ]; then
+    mkdir -p "$LV_INSTALL_PREFIX" || __invalid__prefix__handler
+  fi
+  download_neovim
+  verify_neovim
+  install_neovim
+}
+
+function download_neovim() {
+  echo "Downloading Neovim's binary from $RELEASE_VER release.."
+  if ! curl --progress-bar --fail -L "$RELEASE_URL" -o "$DOWNLOAD_DIR/$ARCHIVE_NAME.tar.gz"; then
+    echo "Download failed.  Check that the release/filename are correct."
+    exit 1
+  fi
+  echo "Download complete!"
+}
+
+function verify_neovim() {
+  echo "Verifying the installation.."
+  DOWNLOADED_SHA="$(sha256sum "$DOWNLOAD_DIR/$ARCHIVE_NAME.tar.gz" | awk '{print $1}')"
+
+  if [ "$RELEASE_SHA" != "$DOWNLOADED_SHA" ]; then
+    echo "Error! checksum mis-match."
+    echo "Expected: $RELEASE_SHA but got: $DOWNLOADED_SHA"
+    exit 1
+  fi
+  echo "Verification complete!"
+}
+
+function install_neovim() {
+
+  echo "Installing Neovim.."
+  pushd "$DOWNLOAD_DIR"
+  tar -xzf "$DOWNLOAD_DIR/$ARCHIVE_NAME.tar.gz"
+  popd
+  # https://dev.to/ackshaey/macos-vs-linux-the-cp-command-will-trip-you-up-2p00
+  cp -r "$DOWNLOAD_DIR/$RELEASE_NAME/." "$LV_INSTALL_PREFIX"
+  echo "Installation complete!"
+  echo "Now you can run $LV_INSTALL_PREFIX/bin/nvim"
+}
+
+function __invalid__prefix__handler() {
+  echo "Error! Invalid value for LV_INSTALL_PREFIX: [$INSTALL_PREFIX]"
+  echo "Please verify that the folder exists and re-run the installer!"
+  exit 1
+}
+
+main "$@"