Re: [gentoo-dev] Re: [PATCH python-utils-r1] Move python_fix_shebang to python-utils-r1 and rewrite it clean.

[Michał Górny]

Dnia 2014-05-20, o godz. 14:27:04
Mike Gilbert <floppym@g.o> napisał(a):

> On Tue, May 20, 2014 at 2:19 PM, Michał Górny <mgorny@g.o> wrote:
> > It serves both as public shebang fixing function and replacement of
> > _python_rewrite_shebang internal function. For the sake of having common
> > code and consistent behavior.
> >
> > Notes on the 'new' function:
> >
> > 1. takes a list of files and/or directories to fix. Directories are
> > processed recursively,
> >
> > 2. files, depending on the shebang:
> >
> > a) with shebang matching $EPYTHON (e.g. already having pythonX.Y) are
> > skipped silently (but see 3),
> >
> > b) with shebang 'compatible' with $EPYTHON (e.g. python3 -> python3.2,
> > but not python2 -> python3.2) are mangled verbosely,
> >
> > c) with shebang 'incompatible' with $EPYTHON (e.g. python3 -> python2.7,
> > python3.2 -> python3.3) raise a fatal error,
> >
>
> This fatal behavior is a little annoying. I seem to recall people
> asking if there is a way to just force it, no matter if the shebang is
> 'compatible' or not.

I literally spent weeks cleaning up this function and you already
request new features :P.

> Unfortunately, I do not have example handy, but I know I have been
> asked the question.

Well, I think it was about some random package having files with
'python3' shebang while they worked with python2.7 as well. I guess we
may add some -f/--force option at a point. While at it, it would
probably be good if we could work on some consistency in argument
parsing of various helper functions.

-- 
Best regards,
Michał Górny