# `Gamend.Repo.MigrationPaths`
[🔗](https://github.com/appsinacup/gamend/blob/v1.0.7/lib/gamend/repo/migration_paths.ex#L1)

Resolves every migration directory that belongs to a gamend deployment.

A host application (the umbrella's `gamend_host`, or a downstream game) runs
**core migrations plus its own**, and core can be present either as an
umbrella app or as a dependency. Anything that walks
migrations — the `host.*` mix tasks, `Gamend.Release`, the admin runtime
page — must consider the same set, so the list lives here rather than being
copied per caller.

Mix and releases locate that set differently, so `all/1` picks one strategy
or the other rather than merging them: under Mix the directories are paths in
the project tree, in a release they live inside each application's own
`lib/<app>-<vsn>/priv`. Returning both would hand Ecto the same migration
file under two names, and duplicate versions are a hard error.

# `all`

```elixir
@spec all(keyword()) :: [String.t()]
```

Existing migration directories, absolute and de-duplicated.

Pass `ensure_host: true` (the mix tasks do) to create the host's own
`priv/repo/migrations` first, so Ecto does not fail on a missing path in a
project that has not written a migration yet.

# `as_args`

```elixir
@spec as_args(keyword()) :: [String.t()]
```

The paths as `--migrations-path <dir>` arguments for the Ecto mix tasks.

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*Consult [api-reference.md](api-reference.md) for complete listing*