`cabal exec` does not accept relative or absolute paths

[sol]

To Reproduce

$ echo "echo foo" > foo.sh
$ chmod +x foo.sh
$ ./foo.sh
foo

$ cabal exec ./foo.sh
Error: [Cabal-6666]
The program './foo.sh' is required but it could not be found.

$ cabal --version
cabal-install version 3.11.0.0
compiled using version 3.11.0.0 of the Cabal library