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nixpkgs/pkgs/servers/mautrix-telegram
Maximilian Bosch 0a94f89fca
mautrix-telegram: patch away alembic dependency
`alembic`[1] is a database migration tool which is invoked from the CLI
when installing the telegram bridge, but never needed during the
runtime.

The reason why `alembic` is required here is to ensure that it
exists in the Python environment when deploying the bridge. However
`alembic` requires `mautrix-telegram` in its environment to create a
database schema from the Python models.

Such a dependency relation may be possible with tools like virtualenv,
however it'll result in an infinite recursion at evaluation time in Nix.

With this patch, `mautrix-telegram` doesn't depend on `alembic` anymore
and provides a patched alembic (`pkgs.mautrix-telegram.alembic`) which
has `mautrix-telegram` in its path.

[1] https://alembic.sqlalchemy.org/en/latest/
2019-05-24 09:35:39 +02:00
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default.nix mautrix-telegram: patch away alembic dependency 2019-05-24 09:35:39 +02:00