> foo bar

> exists bar

$ copy-file changes/broken.sbt build.sbt

-> foo baz

-> exists baz

$ copy-file changes/working.sbt build.sbt

> foo baz

> exists baz

> foo foo; reload

> exists foo

-> compile

$ copy-file changes/sub.sbt sub/build.sbt

> compile

-> scalafmt

$ copy-file changes/ScalafmtVersion.scala project/project/ScalafmtVersion.scala

> scalafmt

$ delete project/plugins.sbt

-> scalafmt
