[BRAINSTORM] shebang fixing framework

[Baptiste Daroussin]

Hi all,

For a while now: http://www.freebsd.org/cgi/query-pr.cgi?pr=ports/51152 we are
looking for a framework/helpers to help patching scripts shebang so that they
fit where the interpreters is on FreeBSD.

We also want to get rid of /usr/bin/perl
http://www.freebsd.org/cgi/query-pr.cgi?pr=ports/170219 and such helpers would
help

here is what I do propose: http://people.freebsd.org/~bapt/shebangfix.mk.txt
How the above works:

USES=	shebangfix
SHEBANG_LANG=	perl
perl_FILES=	*.pl

you want to create a custom one for the joescript?

USES=	shebangfix
SHEBANG_LANG=	joescript
joescript_FILES=	*.joe
joescript_OLD_CMD=	/usr/bin/joe
joescript_CMD=		${LOCALBASE}/bin/joe

How to fix both python and perl scripts:
USES=	shebangfix
SHEBANG_LANG=	perl python
perl_FILES=	*.pl
python_FILES=	bin/*.py myscript/script.py


the _FILES should be relative to ${WRKSRC} it can be globbing

So far what has been proposed already is:
- replace ${lang}_FILES by FIX_${lang}
- nuke SHEBANG_LANG in favor of USES= shebangfix:perl:python
- nuke SHEBANG_LANG in favor of USES= shebangfix:"perl python"
- nuke SHEBANG_LANG in favor of USES= shebangfix:perl+python

What do you guys think about it, what do you propose.
What majority prefers will be implemented and committed during BSDCan!

regards,
Bapt
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