DSL are used in runtime and compile time. At runtime they help customising the software through scripts or rules. Systems expose ability to customise the functionality/behaviour through the DSLs. For example rules editor in a firebase - Security Rules language | Firebase Security Rules . Quite a lot of google cloud services use Common Expression Language - GitHub - cel-expr/cel-spec: Common Expression Language -- specification and binary representation · GitHub
The complete guide to (external) Domain Specific Languages - Strumenta covers a lot of things about DSLs.
Elixir has metaprogramming through macros which is compile time.Ecto has DSL for simplifying queries for accessing the data. If your use case is writing a compile time DSL - elixir metaprogramming makes it easy. Runtime DSL in elixir needs a lot of things - like interpreter, etc to be implemented.
Implementing a DSL needs grammar to be formalised as language spec.
What are you trying to achieve with DSL in your application? Is it runtime or compile time ?
