This is a rewrite of the Taker's default taker_unixrun into Nim programming language. I hope you'll like it!
Like taker_unixrun, it should work on GNU/Linux, macOS and FreeBSD, but now it was tested only on GNU/Linux and FreeBSD. Maybe I'll test it on other systems later. It can also run on other UNIXes, but some patching may be required.
You will need a nim compiler.
Then just run in shell:
$ nim c taker_unixrun.nim
Currently it's hard to test runners, because Taker's test system is used only for testing taker_unixrun. Some hacking with Taker, of course, will solve the problem.
Later, I'm planning to split runners' tests from the main tests, so the runner can be tested independently of Taker itself.