`stack script --compile` crashes

### General summary/comments (optional)

I created a haskell script with a hashbang invoking `stack script --compile`. Running the script crashes.

### Steps to reproduce

I created a file `foo` with the following content:
``` haskell
#!/usr/bin/env stack
{-
stack script
--resolver lts-18.16
--compile
-}

main = return ()
```

I made the file executable (`chmod +x foo`) and then ran it with `./foo`.

### Expected

I expected that `stack` would execute my haskell program. (Which would mean not printing out anything and exiting successfully.)

Note that if I remove `--compile` from the file, it works as I expect it to. I would expect `stack script --compile` to behave exactly like `stack script` only slower on the first run and faster on subsequent runs.

### Actual

I get the following error:
```
target ‘/home/shahn/foo’ is not a module name or a source file
Received ExitFailure 1 when running
Raw command: /home/shahn/.stack/programs/x86_64-linux/ghc-tinfo6-8.10.7/bin/ghc-8.10.7 -i -i/home/shahn/ -hide-all-packages -fdiagnostics-color=always -packagebase /home/shahn/foo
Run from: /home/shahn/
```

### Stack version

```
$ stack --version
Version 2.7.3, Git revision 7927a3aec32e2b2e5e4fb5be76d0d50eddcc197f x86_64 hpack-0.34.4
```

### Method of installation

`stack upgrade`