Build site with habitat plan

.holobranches/site/skeleton-v1.sh

@@ -0,0 +1,3 @@
+src_url="https://github.com/JarvusInnovations/emergence-skeleton.git"
+src_ref=master
+src_merge=parent

.holobranches/site/skeleton-v2.sh

@@ -0,0 +1,6 @@
+src_url="https://github.com/JarvusInnovations/emergence-skeleton-v2.git"
+src_ref=master
+src_merge=parent
+src_before=(
+  skeleton-v1
+)

habitat/plan.sh

@@ -0,0 +1,100 @@
+pkg_name=laddr
+pkg_origin=codeforphilly
+pkg_maintainer="Chris Alfano <chris@codeforphilly.org>"
+pkg_upstream_url=https://github.com/CodeForPhilly/laddr
+pkg_license=(MIT)
+
+pkg_build_deps=(
+  core/git
+)
+
+emergence_parents=(
+  skeleton-v2
+  skeleton-v1
+)
+
+
+# implement git-based dynamic version strings
+pkg_version() {
+  if [ -n "${pkg_last_tag}" ]; then
+    echo "${pkg_last_version}-git+${pkg_last_tag_distance}.${pkg_commit}"
+  else
+    echo "${pkg_last_version}-git+${pkg_commit}"
+  fi
+}
+
+
+# implement build workflow
+do_before() {
+  do_default_before
+
+  # configure git repository
+  export GIT_DIR="${PLAN_CONTEXT}/../.git"
+
+  # load version information from git
+  pkg_commit="$(git rev-parse --short HEAD)"
+  pkg_last_tag="$(git describe --tags --abbrev=0 ${pkg_commit} || true 2>/dev/null)"
+
+  if [ -n "${pkg_last_tag}" ]; then
+    pkg_last_version=${pkg_last_tag#v}
+    pkg_last_tag_distance="$(git rev-list ${pkg_last_tag}..${pkg_commit} --count)"
+  else
+    pkg_last_version="0.0.0"
+  fi
+
+  # initialize pkg_version
+  update_pkg_version
+
+  # setup emergence build
+  SOURCES_CACHE_PATH="${HAB_CACHE_SRC_PATH}/sources"
+}
+
+do_unpack() {
+  mkdir "${CACHE_PATH}"
+  build_line "Extracting ${GIT_DIR}#${pkg_commit}"
+  git archive "${pkg_commit}" | tar -x --directory="${CACHE_PATH}"
+}
+
+do_build() {
+  pushd "${CACHE_PATH}" > /dev/null
+
+  for src_name in "${emergence_parents[@]}"; do
+    source <(
+      source "/src/.holobranches/site/${src_name}.sh";
+      echo "src_url='${src_url[*]}'";
+      echo "src_ref='${src_ref[*]}'";
+      #echo "src_merge='${src_merge[*]}'";
+    )
+
+    # force merge to parent for now
+    src_merge="parent"
+
+    build_line "Applying parent ${src_name} from ${src_url}#${src_ref}"
+
+    src_cache_path="${SOURCES_CACHE_PATH}/${src_name}"
+    src_cache_ref="refs/sources/${src_name}"
+
+    git fetch "${src_url}" "${src_ref}:${src_cache_ref}"
+
+    tar_args=(-x --directory="${CACHE_PATH}")
+
+    if [ "${src_merge}" = "parent" ]; then
+      tar_args+=(--skip-old-files)
+    fi
+
+    git archive "${src_cache_ref}" | tar "${tar_args[@]}"
+  done
+
+  popd > /dev/null
+
+  return 0
+}
+
+do_install() {
+  pushd "${pkg_prefix}" > /dev/null
+  mkdir site
+  cp -r "${CACHE_PATH}"/*/ site/
+  popd > /dev/null
+
+  return 0
+}