I normally have setup the Nim compiler to save executables into a `bin`
directory (`switch("outdir", "bin")` in `config.nims`).
However when running my tests via testament this doesn't work: I get
FAIL: test_my_stuff.nim C
Test "test_my_stuff.nim" in category "pattern"
Failure: reExeNotFound
Run
because testament seem to expect the compiler output in the project root. How
can I tell testament to run the executable from the `outdir` location?
