You can set the `logMessages` and `logStdErr` options in `SessionConfig` to see what the server is up to.
There are also corresponding environment variables so you can turn them on from the command line:
```
-LSP_TEST_LOG_MESSAGES=1 cabal test
+LSP_TEST_LOG_MESSAGES=1 LSP_TEST_LOG_STDERR=1 cabal test
```
## Developing