[diekhans]

It's an interesting package, and I have some of the use cases it appears to address. However, the documentation is inadequate to quickly understand how to robustly build some of the more complex cases. In particular, how to build bash-style process substitution. Robust here is the pipeline exits non-zero if any of the substituted processes fail, as demonstrated by this example:

    #!/bin/bash
    set -beEu -o pipefail
    cat <(date) <(false)
    echo did not exit non-zero

If this is addressed, it would be worth more time to figure out Pipexec.