go-diff.sh

function go-local-package() {
    go list ./... | head -1 | xargs dirname
}

function go-diff() {
    ROOT_PKG=$(go-local-package)
    go list -f '{{.Name}} {{.ImportPath}} {{.Deps}}' $(go list $ROOT_PKG/...) | \
        grep ^main | \
        grep -w -f <(
            git diff --dirstat ${2:-master}...${1:-HEAD} | \
                awk '{ print "'$ROOT_PKG'/" $2 }' | \
                sed 's:/$::'
        ) | \
        awk '{ print $2 }'
}

function go-diff-file() {
    go-diff "$@" | sed 's:^'$(go-local-package)/'::'
}