feat: make Rust feature compatible with Alpine

Signed-off-by: Georg Lauterbach <44545919+georglauterbach@users.noreply.github.com>

Author: georglauterbach

src/rust/common.sh

@@ -1,7 +1,7 @@
 // ref: https://github.com/devcontainers/spec/blob/main/schemas/devContainerFeature.schema.json
 {
   "id": "rust",
-  "version": "7.1.5",
+  "version": "8.0.0",
   "name": "Development Container Feature - Rust",
   "documentationURL": "https://github.com/georglauterbach/dev-container-features/tree/main/src/rust",
   "description": "Work efficiently and effortlessly with the Rust programming language",

src/rust/devcontainer-feature.json

@@ -1,273 +1,11 @@
-#! /usr/bin/env bash
+#! /bin/sh
 
-# -----------------------------------------------
-# ----  Prologue  -------------------------------
-# -----------------------------------------------
+set -e
 
-set -eE -u -o pipefail
-shopt -s inherit_errexit
+. /etc/os-release
 
-CURRENT_DIR="$(realpath -eL "$(dirname "${BASH_SOURCE[0]}")")"
-readonly CURRENT_DIR
+if [ "${ID}" = "alpine" ]; then
+  apk add --no-cache bash
+fi
 
-# shellcheck source=./common.sh
-source "${CURRENT_DIR}/common.sh"
-
-readonly DATA_DIR="${DATA_BASE_DIR}/rust"
-mkdir -p "${DATA_DIR}"
-
-# -----------------------------------------------
-# ----  Argument Parsing  -----------------------
-# -----------------------------------------------
-
-function parse_dev_container_options() {
-  log 'info' 'Parsing input from options'
-
-  readonly RUST_INSTALL="${RUST_INSTALL:?RUST_INSTALL not set or null}"
-  readonly RUST_INSTALL_BASE_PACKAGES="${RUST_INSTALL_BASE_PACKAGES:?RUST_INSTALL_BASE_PACKAGES not set or null}"
-  readonly RUST_RUSTUP_DEFAULT_TOOLCHAIN=${RUST_RUSTUP_DEFAULT_TOOLCHAIN:?RUST_RUSTUP_DEFAULT_TOOLCHAIN not set or null}
-  readonly RUST_RUSTUP_DEFAULT_TOOLCHAIN_FILE=${RUST_RUSTUP_DEFAULT_TOOLCHAIN_FILE?RUST_RUSTUP_DEFAULT_TOOLCHAIN_FILE not set}
-  readonly RUST_RUSTUP_UPDATE_DEFAULT_TOOLCHAIN=${RUST_RUSTUP_UPDATE_DEFAULT_TOOLCHAIN:?RUST_RUSTUP_UPDATE_DEFAULT_TOOLCHAIN not set or null}
-  readonly RUST_RUSTUP_PROFILE=${RUST_RUSTUP_PROFILE:?RUST_RUSTUP_PROFILE not set or null}
-  readonly RUST_RUSTUP_ADDITIONAL_TARGETS=${RUST_RUSTUP_ADDITIONAL_TARGETS?RUST_RUSTUP_ADDITIONAL_TARGETS not set}
-  readonly RUST_RUSTUP_ADDITIONAL_COMPONENTS=${RUST_RUSTUP_ADDITIONAL_COMPONENTS?RUST_RUSTUP_ADDITIONAL_COMPONENTS not set}
-  readonly RUST_RUSTUP_DIST_SERVER=${RUST_RUSTUP_DIST_SERVER:?RUST_RUSTUP_DIST_SERVER not set or null}
-  readonly RUST_RUSTUP_UPDATE_ROOT=${RUST_RUSTUP_UPDATE_ROOT:?RUST_RUSTUP_UPDATE_ROOT not set or null}
-  RUST_RUSTUP_RUSTUP_INIT_HOST_TRIPLE=${RUST_RUSTUP_RUSTUP_INIT_HOST_TRIPLE?RUST_RUSTUP_RUSTUP_INIT_HOST_TRIPLE not set or null}
-
-  readonly SYSTEM_PACKAGES_PACKAGE_MANAGER_SET_PROXIES=${SYSTEM_PACKAGES_PACKAGE_MANAGER_SET_PROXIES:?SYSTEM_PACKAGES_PACKAGE_MANAGER_SET_PROXIES not set or null}
-  readonly SYSTEM_PACKAGES_ADDITIONAL_PACKAGES="${SYSTEM_PACKAGES_ADDITIONAL_PACKAGES?SYSTEM_PACKAGES_ADDITIONAL_PACKAGES not set}"
-
-  readonly LINKER_MOLD_INSTALL=${LINKER_MOLD_INSTALL:?LINKER_MOLD_INSTALL not set or null}
-  readonly LINKER_MOLD_VERSION=${LINKER_MOLD_VERSION?LINKER_MOLD_VERSION not set}
-
-  readonly DOWNLOAD_ACQUIRE_INSECURE="${DOWNLOAD_ACQUIRE_INSECURE:?DOWNLOAD_ACQUIRE_INSECURE set or null}"
-
-  [[ -v http_proxy ]]  || export http_proxy=${PROXY_HTTP_HTTP_ADDRESS?PROXY_HTTP_HTTP_ADDRESS not set}
-  [[ -v https_proxy ]] || export https_proxy=${PROXY_HTTP_HTTPS_ADDRESS?PROXY_HTTP_HTTPS_ADDRESS not set}
-  [[ -v no_proxy ]]    || export no_proxy=${PROXY_HTTP_NO_PROXY_ADDRESS?PROXY_HTTP_NO_PROXY_ADDRESS not set}
-
-  return 0
-}
-
-# -----------------------------------------------
-# ----  Pre-Flight Checks  ----------------------
-# -----------------------------------------------
-
-function pre_flight_checks() {
-  log 'info' 'Running pre-flight checks'
-
-  case "${LINUX_DISTRIBUTION_NAME}" in
-    ( 'debian' )
-      if value_is_true SYSTEM_PACKAGES_PACKAGE_MANAGER_SET_PROXIES; then
-        log 'debug' 'Setting proxies for APT'
-        local APT_CONFIG_FILE='/etc/apt/apt.conf' ; readonly APT_CONFIG_FILE
-        mkdir --parents "$(dirname "${APT_CONFIG_FILE}")"
-        if [[ -n ${https_proxy} ]]; then
-          echo "Acquire::http::Proxy \"${https_proxy}\";" >>"${APT_CONFIG_FILE}"
-        elif [[ -n ${http_proxy} ]]; then
-          echo "Acquire::http::Proxy \"${http_proxy}\";"  >>"${APT_CONFIG_FILE}"
-        fi
-      fi
-
-      if value_is_true RUST_INSTALL_BASE_PACKAGES; then
-        log 'debug' 'Updating APT package index and installing required base packages'
-        apt-get --yes --quiet=2 --option=Dpkg::Use-Pty=0 update
-        apt-get --yes --quiet=2 --option=Dpkg::Use-Pty=0 install --no-install-recommends \
-          'build-essential' 'ca-certificates' 'curl'
-      fi
-      ;;
-
-    ( * ) ;;
-  esac
-
-  return 0
-}
-
-# -----------------------------------------------
-# ----  Actual Functionality  -------------------
-# -----------------------------------------------
-
-function install_additional_packages() {
-  if [[ -n ${SYSTEM_PACKAGES_ADDITIONAL_PACKAGES} ]]; then
-    local __SYSTEM_PACKAGES_ADDITIONAL_PACKAGES
-    IFS=',' read -r -a __SYSTEM_PACKAGES_ADDITIONAL_PACKAGES <<< "${SYSTEM_PACKAGES_ADDITIONAL_PACKAGES// /}"
-
-    case "${LINUX_DISTRIBUTION_NAME}" in
-      ( 'debian' )
-        log 'info' 'Installing additional packages via APT'
-        apt-get --yes --quiet=2 --option=Dpkg::Use-Pty=0 update
-        apt-get --yes --quiet=2 --option=Dpkg::Use-Pty=0 install --no-install-recommends \
-          "${__SYSTEM_PACKAGES_ADDITIONAL_PACKAGES[@]}"
-        ;;
-
-      ( * )
-        log 'error' 'Distribution unknown - installing additional packages is not supported'
-        exit 1
-        ;;
-    esac
-  fi
-
-  return 0
-}
-
-function install_rustup() {
-  if ! value_is_true RUST_INSTALL; then
-    log 'info' 'Not installing rustup'
-    return 0
-  fi
-
-  log 'info' 'Installing rustup'
-  log 'debug' 'Setting installation environment variables'
-  # These directories contain metadata and files required by
-  # `rustup` (toolchain files, components, etc.) and `cargo`
-  # (crates, etc.).
-  export RUSTUP_HOME="${DATA_DIR}/rustup/home"
-  export CARGO_HOME="${DATA_DIR}/cargo/home"
-
-  mkdir -p "${RUSTUP_HOME}" "${CARGO_HOME}"
-
-  # These variables are used when acquiring and updating `rustup`.
-  export RUSTUP_DIST_SERVER
-  export RUST_RUSTUP_UPDATE_ROOT
-
-  local RUSTUP_INSTALLER_ARGUMENTS=(
-    '-y'
-    '--no-modify-path'
-    '--default-toolchain' "${RUST_RUSTUP_DEFAULT_TOOLCHAIN}"
-    '--profile' "${RUST_RUSTUP_PROFILE}"
-  )
-
-  if ! value_is_true RUST_RUSTUP_UPDATE_DEFAULT_TOOLCHAIN; then
-    # do not update any existing default toolchain after install
-    log 'trace' 'Default toolchain will not be updated'
-    RUSTUP_INSTALLER_ARGUMENTS+=('--no-update-default-toolchain')
-  fi
-
-  if [[ -z ${RUST_RUSTUP_RUSTUP_INIT_HOST_TRIPLE} ]]; then
-    RUST_RUSTUP_RUSTUP_INIT_HOST_TRIPLE="$(uname -m)-unknown-linux-gnu"
-    log 'debug' "Host triple set to '${RUST_RUSTUP_RUSTUP_INIT_HOST_TRIPLE}'"
-  fi
-
-  if command -v curl &>/dev/null; then
-    DOWNLOAD_COMMAND=('curl' '--silent' '--show-error' '--location' '--fail')
-    value_is_true DOWNLOAD_ACQUIRE_INSECURE && DOWNLOAD_COMMAND+=('--insecure')
-    DOWNLOAD_COMMAND+=('--output' "${RUSTUP_HOME}/rustup-init")
-  elif command -v wget &>/dev/null; then
-    DOWNLOAD_COMMAND=('wget')
-    value_is_true DOWNLOAD_ACQUIRE_INSECURE && DOWNLOAD_COMMAND+=('--no-check-certificate')
-    DOWNLOAD_COMMAND+=("--output-document=${RUSTUP_HOME}/rustup-init")
-  else
-    log 'error' "Neither 'curl' nor 'wget' found, but required"
-    exit 1
-  fi
-
-  # This is the point where the actual installation takes place.
-  log 'debug' "Acquiring rustup-init"
-  "${DOWNLOAD_COMMAND[@]}" "${RUST_RUSTUP_UPDATE_ROOT}/dist/${RUST_RUSTUP_RUSTUP_INIT_HOST_TRIPLE}/rustup-init"
-
-  log 'debug' "Installing rustup via rustup-init"
-  chmod +x "${RUSTUP_HOME}/rustup-init"
-  "${RUSTUP_HOME}/rustup-init" "${RUSTUP_INSTALLER_ARGUMENTS[@]}"
-
-  # This commands exports a new PATH with `${CARGO_HOME}/bin` as an additional entry
-  # shellcheck source=/dev/null
-  source "${CARGO_HOME}/env"
-}
-
-function additional_rust_setup() {
-  log 'info' 'Running additional setup steps now'
-
-  log 'debug' 'Installing prettifier for LLDB'
-  cp "${CURRENT_DIR}/prettifier_for_lldb.py" "${DATA_DIR}/prettifier_for_lldb.py"
-
-  if ! command -v rustup &>/dev/null; then
-    log 'warn' "Command 'rustup' could not be located but is required for the mojority of the additional setup steps"
-    return 0
-  fi
-
-  if [[ ${RUST_RUSTUP_DEFAULT_TOOLCHAIN} != 'none' ]]; then
-    log 'debug' "Setting default toolchain to '${RUST_RUSTUP_DEFAULT_TOOLCHAIN}'"
-    rustup default "${RUST_RUSTUP_DEFAULT_TOOLCHAIN}"
-  fi
-
-  if [[ -n ${RUST_RUSTUP_ADDITIONAL_TARGETS} ]]; then
-    local __RUST_RUSTUP_ADDITIONAL_TARGETS
-    IFS=',' read -r -a __RUST_RUSTUP_ADDITIONAL_TARGETS <<< "${RUST_RUSTUP_ADDITIONAL_TARGETS// /}"
-    log 'debug' "Installing additional rustup targets: ${__RUST_RUSTUP_ADDITIONAL_TARGETS[*]}"
-    rustup target add "${__RUST_RUSTUP_ADDITIONAL_TARGETS[@]}"
-  fi
-
-  if [[ -n ${RUST_RUSTUP_ADDITIONAL_COMPONENTS} ]]; then
-    local __RUST_RUSTUP_ADDITIONAL_COMPONENTS
-    IFS=',' read -r -a __RUST_RUSTUP_ADDITIONAL_COMPONENTS <<< "${RUST_RUSTUP_ADDITIONAL_COMPONENTS// /}"
-    log 'debug' "Adding additional rustup components: ${__RUST_RUSTUP_ADDITIONAL_COMPONENTS[*]}"
-    rustup component add "${__RUST_RUSTUP_ADDITIONAL_COMPONENTS[@]}"
-  fi
-
-  log 'debug' 'Setting up bash completion'
-  mkdir  -p                      /usr/share/bash-completion/completions
-  rustup completions bash       >/usr/share/bash-completion/completions/rustup
-  rustup completions bash cargo >/usr/share/bash-completion/completions/cargo
-
-  log 'trace' "Adjusting permissions for '${DATA_DIR}'"
-  chmod -R 777 "${DATA_DIR}"
-
-  return 0
-}
-
-function linker_install_mold() {
-  value_is_true LINKER_MOLD_INSTALL || return 0
-  log 'info' "Installing linker 'mold'"
-
-  local MOLD_DIR
-  MOLD_DIR="mold-${LINKER_MOLD_VERSION}-$(uname -m)-linux"
-
-  if command -v curl &>/dev/null; then
-    DOWNLOAD_COMMAND=('curl' '--silent' '--show-error' '--location' '--fail')
-    value_is_true DOWNLOAD_ACQUIRE_INSECURE && DOWNLOAD_COMMAND+=('--insecure')
-  elif command -v wget &>/dev/null; then
-    DOWNLOAD_COMMAND=('wget')
-    value_is_true DOWNLOAD_ACQUIRE_INSECURE && DOWNLOAD_COMMAND+=('--no-check-certificate')
-  else
-    log 'error' "Neither 'curl' nor 'wget' found but required for acquiring 'mold'"
-    exit 1
-  fi
-
-  "${DOWNLOAD_COMMAND[@]}" \
-    "https://github.com/rui314/mold/releases/download/v${LINKER_MOLD_VERSION}/${MOLD_DIR}.tar.gz" \
-    | tar xz -C /tmp
-
-  cp "/tmp/${MOLD_DIR}/"{bin/{mold,ld.mold},lib/mold/mold-wrapper.so} /usr/local/bin/
-  rm -r "/tmp/${MOLD_DIR}"
-
-  return 0
-}
-
-function setup_post_start_command() {
-  log 'info' 'Setting up postStartCommand script'
-
-  local SCRIPT_FILE="${DATA_DIR}/post_start_command.sh"
-  readonly SCRIPT_FILE
-
-  cp "${CURRENT_DIR}/post_start_command.sh" "${SCRIPT_FILE}"
-  sed --in-place \
-    "s|RUST_RUSTUP_DEFAULT_TOOLCHAIN_FILE|${RUST_RUSTUP_DEFAULT_TOOLCHAIN_FILE}|g" \
-    "${SCRIPT_FILE}"
-  chmod +x "${SCRIPT_FILE}"
-}
-
-function main() {
-  parse_dev_container_options
-  parse_linux_distribution
-  pre_flight_checks
-
-  install_additional_packages
-  install_rustup
-  additional_rust_setup
-  linker_install_mold
-
-  setup_post_start_command
-}
-
-main "${@}"
+exec /bin/bash "$(dirname "${0}")/install_actual.sh" "${@}"