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selfhostblocks/postgresdb/default.nix

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Nix

{ stdenv
, pkgs
, lib
}:
{ postgresDatabase
, postgresUsername
, postgresPassword ? null
, postgresPasswordFile ? null
}:
assert lib.assertMsg (
(postgresPassword == null && postgresPasswordFile != null)
|| (postgresPassword != null && postgresPasswordFile == null)
) "set either postgresPassword or postgresPasswordFile";
# From https://github.com/svanderburg/dysnomia/blob/master/dysnomia-modules/postgresql-database.in
# and https://github.com/svanderburg/dysnomia/blob/master/tests/deployment/postgresql-database.nix
#
# On activation, an initial dump can be restored. If the mutable component
# contains a sub folder named postgresql-databases/, then the dump files stored
# inside get imported.
stdenv.mkDerivation {
name = postgresDatabase;
src = pkgs.writeTextDir "${postgresDatabase}.sql" ''
CREATE USER "${postgresUsername}" WITH PASSWORD '${postgresPassword}';
GRANT ALL PRIVILEGES ON DATABASE "${postgresUsername}" TO "${postgresDatabase}";
'';
buildCommand = ''
mkdir -p $out/postgresql-databases
cp $src/*.sql $out/postgresql-databases
'';
}