rebar3 provider that runs the thrift_generator over IDL files declared in the consumer's rebar.config:

{thrift, [
    {files, ["src/my_api.thrift"]},  %% required, one or more IDL files
    {out_dir, "src"}                 %% optional, default "src"
]}

Four optional axes mirror the standalone generator's flags and apply only to definitions without an explicit annotation of their own: {repr, record|map|native} (like --repr, the erl.struct_type default), {union_type, record|sum} (like --union-type, erl.union_type), {set, list|sets|ordset} (like --set, erl.set) and {typedef_type, alias|nominal} (like --typedef-type, erl.type); a file-wide namespace default overrides the option for its file.

rebar3 thrift regenerates the Erlang sources for every file; files whose content is already up to date are left untouched, so regenerating an unchanged IDL does not churn mtimes. To run it before every compilation, hook it in the consumer's rebar.config:

{provider_hooks, [{pre, [{compile, {default, thrift}}]}]}

rebar3 thrift --check verifies instead of writing: it fails when any generated artifact is missing or stale relative to the IDL — a CI freshness gate.

rebar3 thrift clean deletes the generated files from the out dir: every .erl/.hrl carrying the generator's Autogenerated by Thrift Generator banner, so files orphaned by a removed service or a deleted IDL go too. To run it on project cleanup, hook the namespaced clean provider into rebar3 clean:

{provider_hooks, [{post, [{clean, {thrift, clean}}]}]}