The elvis plugin for rebar3 listed at rebar3_elvis_plugin | Hex appears woefully out of date (it uses a really old version of elvis_core); the “rebar3 lint” plugin fails with Error: undef when loading file "src/my_app.erl"
What’s the state of play for rebar3 and elvis?
Yeah… the supported plugin is rebar3_lint | Hex
This appears to have been caused by having a stale _build directory, probably from my earlier messing around with rebar3_elvis_plugin.
I confirmed that rebar3 lint worked on another project, then deleted the _build directory in this one. Works now.