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#!/usr/bin/env bash
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set -euo pipefail
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IFS=$'\n\t'
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### Used env vars set by default in GitHub Actions
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# docs: https://docs.github.com/en/actions/learn-github-actions/variables#default-environment-variables
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# GITHUB_ACTIONS
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# RUNNER_OS
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if [ -z "$GITHUB_ACTIONS" ]; then
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  printf "%s\n" "GITHUB_ACTIONS is not set. This script is only intended to be run in GitHub Actions. Exiting."
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  exit 1
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fi
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if [ -z "$RUNNER_OS" ]; then
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  printf "%s\n" "RUNNER_OS is not set. This script is only intended to be run in GitHub Actions. Exiting."
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  exit 1
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fi
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### Set variables for tracking versions
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# Elvish
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elvish_semver="v0.19.2"
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# Fish
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fish_semver="3.7.0"
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fish_apt_semver="${fish_semver}-1~jammy"
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# Nushell
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nushell_semver="0.86.0"
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# Powershell
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powershell_semver="7.3.3"
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powershell_apt_semver="${powershell_semver}-1.deb"
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### Install dependencies on Linux
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if [ "$RUNNER_OS" = "Linux" ]; then
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  printf "%s\n" "Installing dependencies on Linux"
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  curl -fsSLo- https://packages.microsoft.com/keys/microsoft.asc | sudo tee /etc/apt/trusted.gpg.d/microsoft.asc >/dev/null
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  sudo sh -c 'echo "deb [arch=amd64] https://packages.microsoft.com/repos/microsoft-debian-bullseye-prod bullseye main" > /etc/apt/sources.list.d/microsoft.list'
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  sudo add-apt-repository -y ppa:fish-shell/release-3
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  sudo apt-get update
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  sudo apt-get -y install curl parallel \
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    fish="${fish_apt_semver}" \
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    powershell="${powershell_apt_semver}"
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  # Create $HOME/bin
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  mkdir -p "$HOME/bin"
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  # Download elvish binary and add to path
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  curl https://dl.elv.sh/linux-amd64/elvish-${elvish_semver}.tar.gz -o elvish-${elvish_semver}.tar.gz
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  tar xzf elvish-${elvish_semver}.tar.gz
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  rm elvish-${elvish_semver}.tar.gz
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  mv elvish-${elvish_semver} "$HOME/bin/elvish"
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  # Download nushell binary and add to path
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  curl -L https://github.com/nushell/nushell/releases/download/${nushell_semver}/nu-${nushell_semver}-x86_64-unknown-linux-gnu.tar.gz -o nu-${nushell_semver}-x86_64-unknown-linux-gnu.tar.gz
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  tar xzf nu-${nushell_semver}-x86_64-unknown-linux-gnu.tar.gz
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  rm nu-${nushell_semver}-x86_64-unknown-linux-gnu.tar.gz
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  mv nu-${nushell_semver}-x86_64-unknown-linux-gnu/* "$HOME/bin"
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  # Add $HOME/bin to path (add Elvish & Nushell to path)
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  echo "$HOME/bin" >>"$GITHUB_PATH"
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fi
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### Install dependencies on macOS
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if [ "$RUNNER_OS" = "macOS" ]; then
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  printf "%s\n" "Installing dependencies on macOS"
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  brew install coreutils parallel \
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    elvish \
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    fish \
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    nushell \
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    powershell
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fi
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### Install bats-core
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printf "%s\n" "Installing bats-core"
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bats_version=$(grep -Eo "^\\s*bats\\s*.*$" ".tool-versions" | cut -d ' ' -f2-)
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git clone --depth 1 --branch "v$bats_version" https://github.com/bats-core/bats-core.git "$HOME/bats-core"
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echo "$HOME/bats-core/bin" >>"$GITHUB_PATH"
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