# In reply to @mratsim "https://github.com/nim-lang/Nim/issues/7632": This ended
# up being the solution:
# <../util.nim>
import std/tables

const TYPE_COLORS = {"type1": "red", ...}.to_table()

proc date_formatter(in_stamp: string): string =
    ...


# <Module where these are used>
import std/tables
import std/strformat
import ../util

proc generic_metadata_printer(
  struct: MetadataType1 | MetadataType2
): string =
    # Both `MetadataType1` and `MetadataType2` have the fields `event_stamp` and
`mdtype`
    block:
        let dformat {.inject.} = date_formatter
        result &= &"Let's format a datestamp: {dformat(struct.event_stamp)}\n"

    block:
        proc `[]`[K, V](t: Table[K, V], key: K): V {.inject.} =
            return t.getOrDefault(key)
        result &= &"Let's also pick a color: {TYPE_COLORS[struct.mdtype]}\n"
    ...