{%- macro yaml2inline_toml(item, depth) -%}
  {%- if item is string or item is number -%}
    {#- First, process all primitive types. -#}
    {{ item | to_json }}
  {%- elif item is mapping -%}
    {#- Second, process all mappings. -#}
    {#- Note that inline mappings must not contain newlines (except inside contained lists). -#}
    {{ "{" }}
    {%- for key, value in item.items() | sort -%}
      {{  " "
        + (key | to_json)
        + " = "
        + yaml2inline_toml(value, depth)
      }}
      {%- if not loop.last -%}{{ "," }}{%- endif -%}
    {%- endfor -%}
    {{ " }" }}
  {%- else -%}
    {#- Third, process all lists. -#}
    {%- if item | length == 0 -%}{{ "[]" }}{%- else -%}
      {{ "[" }}
      {%- for entry in item -%}
        {{  "\n"
          + ("  " * (depth + 1))
          + yaml2inline_toml(entry, depth + 1)
        }}
        {%- if not loop.last -%}{{ "," }}{%- endif -%}
      {%- endfor -%}
      {{ "\n" + ("  " * depth) + "]" }}
    {%- endif -%}
  {%- endif -%}
{%- endmacro -%}

{%- macro yaml2toml(item, super_keys=[]) -%}
  {%- for key, value in item.items() | sort -%}
    {%- if value is not mapping -%}
      {#- First, process all non-mappings. -#}
      {{  ("  " * (super_keys | length))
        + (key | to_json)
        + " = "
        + (yaml2inline_toml(value, super_keys | length))
        + "\n"
      }}
    {%- endif -%}
  {%- endfor -%}
  {%- for key, value in item.items() | sort -%}
    {%- if value is mapping -%}
      {#- Second, process all mappings. -#}
      {{  "\n"
        + ("  " * (super_keys | length))
        + "["
        + ((super_keys+[key]) | map('to_json') | join("."))
        + "]\n"
        + yaml2toml(value, super_keys+[key])
      }}
    {%- endif -%}
  {%- endfor -%}
{%- endmacro -%}