ci: Run base install at most once

This should avoid errors when running it twice. For example, network
errors on the second invocation of 'apt update'; or unguarded
modifications such as APPEND_APT_SOURCES_LIST, which will append the
same string repeatedly.

The base install may be run twice in Cirrus CI with dockerfiles, or
locally when running twice with DANGER_RUN_CI_ON_HOST specified.

ci/test/01_base_install.sh

@@ -6,6 +6,12 @@
 
 export LC_ALL=C.UTF-8
 
+CFG_DONE="ci.base-install-done"  # Use a global git setting to remember whether this script ran to avoid running it twice
+
+if [ "$(git config --global ${CFG_DONE})" == "true" ]; then
+  echo "Skip base install"
+  exit 0
+fi
 
 if [ -n "$DPKG_ADD_ARCH" ]; then
   dpkg --add-architecture "$DPKG_ADD_ARCH"
@@ -51,11 +57,9 @@ if [[ ${USE_MEMORY_SANITIZER} == "true" ]]; then
 fi
 
 if [[ "${RUN_TIDY}" == "true" ]]; then
-  if [ ! -d "${DIR_IWYU}" ]; then
   git clone --depth=1 https://github.com/include-what-you-use/include-what-you-use -b clang_16 "${DIR_IWYU}"/include-what-you-use
   cmake -B "${DIR_IWYU}"/build/ -G 'Unix Makefiles' -DCMAKE_PREFIX_PATH=/usr/lib/llvm-16 -S "${DIR_IWYU}"/include-what-you-use
   make -C "${DIR_IWYU}"/build/ install "$MAKEJOBS"
-  fi
 fi
 
 mkdir -p "${DEPENDS_DIR}/SDKs" "${DEPENDS_DIR}/sdk-sources"
@@ -80,3 +84,5 @@ if [ -n "$ANDROID_HOME" ] && [ ! -d "$ANDROID_HOME" ]; then
   unzip -o "$ANDROID_TOOLS_PATH" -d "$ANDROID_HOME"
   yes | "${ANDROID_HOME}"/cmdline-tools/bin/sdkmanager --sdk_root="${ANDROID_HOME}" --install "build-tools;${ANDROID_BUILD_TOOLS_VERSION}" "platform-tools" "platforms;android-${ANDROID_API_LEVEL}" "ndk;${ANDROID_NDK_VERSION}"
 fi
+
+git config --global ${CFG_DONE} "true"

ci/test/04_install.sh

@@ -55,14 +55,8 @@ if [ -z "$DANGER_RUN_CI_ON_HOST" ]; then
                   $CONTAINER_NAME)
   export CI_CONTAINER_ID
   export CI_EXEC_CMD_PREFIX="docker exec ${CI_CONTAINER_ID}"
-  $CI_EXEC_CMD_PREFIX rsync --archive --stats --human-readable /ci_base_install/ "${BASE_ROOT_DIR}"
-  $CI_EXEC_CMD_PREFIX rsync --archive --stats --human-readable /ro_base/ "$BASE_ROOT_DIR"
-  # Fixes permission issues when there is a container UID/GID mismatch with the owner
-  # of the mounted bitcoin src dir.
-  $CI_EXEC_CMD_PREFIX git config --global --add safe.directory "*"
 else
   echo "Running on host system without docker wrapper"
-  "${BASE_ROOT_DIR}/ci/test/01_base_install.sh"
 fi
 
 CI_EXEC () {
@@ -70,6 +64,13 @@ CI_EXEC () {
 }
 export -f CI_EXEC
 
+CI_EXEC rsync --archive --stats --human-readable /ci_base_install/ "${BASE_ROOT_DIR}" || echo "/ci_base_install/ missing"
+CI_EXEC "${BASE_ROOT_DIR}/ci/test/01_base_install.sh"
+CI_EXEC rsync --archive --stats --human-readable /ro_base/ "${BASE_ROOT_DIR}" || echo "Nothing to copy from ro_base"
+# Fixes permission issues when there is a container UID/GID mismatch with the owner
+# of the git source code directory.
+CI_EXEC git config --global --add safe.directory \"*\"
+
 CI_EXEC mkdir -p "${BINS_SCRATCH_DIR}"
 
 if [ "$CI_OS_NAME" == "macos" ]; then