Fix config flags

diesel_derives/src/lib.rs

@@ -1634,38 +1634,40 @@ pub fn table_proc(input: TokenStream) -> TokenStream {
 /// in your enum, and the backend generated by this derive called MultiBackend.
 /// For example to support `diesel::sql_types::TimestamptzSqlite` with the `time` crate:
 /// ```
+/// # #[cfg(all(feature = "sqlite", feature = "time"))]
+/// # fn main() {
 /// use diesel::backend::Backend;
 /// use diesel::deserialize::{self, FromSql};
 /// use diesel::serialize::{self, IsNull, ToSql};
 /// use diesel::sql_types::HasSqlType;
 ///
 /// #[derive(diesel::MultiConnection)]
 /// pub enum AnyConnection {
-/// #   #[cfg(feature = "sqlite")]
 ///     Sqlite(diesel::SqliteConnection),
 /// }
 ///
-/// #   #[cfg(all("sqlite", "time"))]
 /// impl HasSqlType<diesel::sql_types::TimestamptzSqlite> for MultiBackend {
 ///    fn metadata(lookup: &mut Self::MetadataLookup) -> Self::TypeMetadata {
 ///        MultiBackend::lookup_sql_type::<diesel::sql_types::TimestamptzSqlite>(lookup)
 ///    }
 /// }
 ///
-/// #   #[cfg(all("sqlite", "time"))]
 /// impl FromSql<diesel::sql_types::TimestamptzSqlite, MultiBackend> for time::OffsetDateTime {
 ///    fn from_sql(bytes: <MultiBackend as Backend>::RawValue<'_>) -> deserialize::Result<Self> {
 ///        bytes.from_sql::<time::OffsetDateTime, diesel::sql_types::TimestamptzSqlite>()
 ///    }
 /// }
 ///
-/// #   #[cfg(all("sqlite", "time"))]
 /// impl ToSql<diesel::sql_types::TimestamptzSqlite, MultiBackend> for time::OffsetDateTime {
 ///    fn to_sql<'b>(&'b self, out: &mut serialize::Output<'b, '_, MultiBackend>) -> serialize::Result {
 ///        out.set_value((diesel::sql_types::TimestamptzSqlite, self));
 ///        Ok(IsNull::No)
 ///    }
 /// }
+/// # }
+///
+/// # #[cfg(not(all(feature = "sqlite", feature = "time")))]
+/// # fn main() {}
 /// ```
 #[proc_macro_derive(MultiConnection)]
 pub fn derive_multiconnection(input: TokenStream) -> TokenStream {