I really like this part of pkgx: https://docs.pkgx.sh/pkgx/scripting#ultra-portable-scripts

And while I do prefer writing bash for scripts, I use fish as my terminal shell.

So I'd like to be able to do the following when implementing my fish aliases/functions:

function xc
 eval "$(pkgx +aria2c@latest +xcodes@latest)" # whatever the equivalent of this is in fish
 if test (count $argv) -ge 2; and test $argv[1] = runtimes; and test $argv[2] = install
 sudo xcodes $argv
 else
 xcodes $argv
 end
end

Effectively, I want to be able to declare all my local function dependencies at the very top and not have to worry about how to invoke them throughout my implemention.

Is this feasable?