hugo_mybuild.sh

#!/usr/bin/env bash
# Time-stamp: <2017-10-23 12:14:47 kmodi>

# Hugo build script.. for hugo version build after switching to Go dep.
# (v0.31-DEV+)

# Usage: ./hugo_mybuild.sh # Installs using origin/master
#        ./hugo_mybuild.sh --rev v0.30.2

#${GOPATH}/src/github.com/gohugoio/hugo/README.md
# http://matthewkwilliams.com/index.php/2014/09/28/go-executables-are-statically-linked-except-when-they-are-not/

set -euo pipefail # http://redsymbol.net/articles/unofficial-bash-strict-mode
IFS=$'\n\t'

here=$(pwd)

hugo_rev="origin/master"

while [ $# -gt 0 ]
do
    case "$1" in
        "-r"|"--rev" ) shift
                       hugo_rev="$1";;
        * ) echo >&2 "Error: Invalid option: $*"
    esac
    shift # expose next argument
done

# If ${hugo_rev} is origin/master, ${hugo_rev_basename} = master
# If ${hugo_rev} is v0.30.2, ${hugo_rev_basename} = v0.30.2
hugo_rev_basename=$(basename "${hugo_rev}")

dep_src="github.com/golang/dep/cmd/dep"
hugo_src="github.com/gohugoio/hugo"
chroma_src="github.com/alecthomas/chroma"

export CGO_ENABLED=0
export GO_EXTLINK_ENABLED=0

# Install hugo for the first time so that the ${GOPATH}/src/${hugo_src}
# directory gets populated.
if [[ ! -d "${GOPATH}/src/${hugo_src}" ]] || ( ! hash hugo 2>/dev/null )
then
    go get -u -v ${hugo_src}
fi

# cd to the hugo source directory to update to the needed version.
cd "${GOPATH}/src/${hugo_src}" || exit

git fetch --all # fetch new branch names if any
git reset --hard "${hugo_rev}"
git checkout "${hugo_rev_basename}"
git reset --hard "${hugo_rev}"

echo ""

# Synchronize all the dependent packages
if ! hash dep 2>/dev/null
then
    go get -u -v "${dep_src}"
fi
dep ensure

hugo_commithash=$(git rev-parse --short HEAD 2>/dev/null)
builddate=$(date +%FT%T%z)

# Update dependent packages from their master branches if building hugo from its
# master branch.
if [[ "${hugo_rev_basename}" == "master" ]]
then
    # https://discourse.gohugo.io/t/building-hugo-with-the-latest-version-of-chroma/8543/2?u=kaushalmodi
    go get -u -v ${chroma_src}/...
    rm -rf "${GOPATH}/src/${hugo_src}/vendor/${chroma_src}"
    chroma_commithash=$(cd "${GOPATH}/src/${chroma_src}" && git rev-parse --short HEAD 2>/dev/null)
    hugo_commithash="${hugo_commithash}:chroma-${chroma_commithash}"
fi

cmd="go build -v \
     -ldflags \"-X ${hugo_src}/hugolib.CommitHash=${hugo_commithash} \
               -X ${hugo_src}/hugolib.BuildDate=${builddate}\" \
     ${hugo_src}"
echo "${cmd}"
eval "${cmd}"

hugo_install_dir="${STOW_PKGS_ROOT}/hugo/${hugo_rev_basename}"
mkdir -p "${hugo_install_dir}/bin"
cp -f ./hugo "${hugo_install_dir}/bin/." # We are still in ${GOPATH}/src/${hugo_src}

# Version check
"${hugo_install_dir}"/bin/hugo version

cd "${here}" || exit

echo ""
echo "Now update the '~/scripts/bash/stow_it.sh' script and rerun that script if needed."
echo "  That would be needed if you are installing 'hugo' for the first time, or changing the version."

Thanks for making this available. My install script stopped working after the extended versions became available, so I will try your techniques as a starting point, @kaushalmodi.