[erlang-bugs] Be able to handle more than one repasitory of software

[Pupeno]

In my system, Erlang is installed in /usr/lib/erlang so I have a repository of 
software, I mean, libraries at /usr/lib/erlang/lib. With lots of nice 
libraries. All those files are managed by a package manager that does a good 
job of upgrading my installation whenever a new package is released.
Now, I do some coding and I don't want my code in there as well for various 
reasons among them that it is not managed by the package management, it is 
experimental and it install more files that should also don't go directly 
into /usr.
I normally install on /usr/local so my libraries go 
into /usr/local/lib/erlang/lib. I don't see any way to tell erlc to also look 
for libraries in /usr/local/lib/erlang/lib and this is my bug report. I 
believe there should be a way. There's -pa, but that requires specifing each 
library path and not a repository of libraries.
Just to make my case a little bit clear, this is how it is done with other 
languages:

- C: there are so many ways to do it here. With gcc you can use 
LD_LIBRARY_PATH to list all the places were you can find libraries. You can 
also set it in ld.so.conf or you can add it to the command line with -L 
(and -I for the includes).

- C++: Same as C.

- Obj-C: Same as C.

- Python: You just set PYTHON_PATH to contain the extra directories to search 
for.

- Haskell: Using ghc you can use the parameter -i to add paths to search for 
modules. I don't know if there's an environment variable to do it, but I am 
sure there is.

- Ruby: You can do it, if I understand it correctly, with -I.

- Java: long ago I remember setting a CLASSPATH environment variable, but I am 
not completely sure.

I believe it is important to give good support for this kind of features that 
are just expected to be there by people using OSs just as GNU/Linux and tools 
such as make, automake/conf, etc.

Thank you.
-- 
Pupeno <pupeno@REDACTED> (http://pupeno.com)
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