Escript: setting code code relative to script directory

Question

When I try to set the relative code path in escript with -pz, like this

#!/usr/bin/env escript %% -*- erlang -*- %%! -pz ../dir-of-some-beams 

The path is interpreted relative to the directory from which I am running escript, which makes it useless to set the path relative to the location of the script.

My current “workaround” uses an absolute path that is annoying as it is all part of the repository, and I don't want it to depend on location.

So how can I set the code path relative to the directory where escript is located?

Answer 1

I just found out myself:

At the beginning of the main code, add the following code:

 true = code:add_pathz(filename:dirname(escript:script_name()) ++ "/../dir-of-some-beams"), 

I recommend always testing true with these code functions, because it is easy to type code:add_pathsz , which wants a list of lines and always returns ok , even if you pass it only a line, but it does not set the code path to a single directory (which is quite annoying btw).