[Mageia-dev] Minimal patching vs. fixing the whole Universe

Thu Jun 23 03:44:31 CEST 2011

Le mercredi 22 juin 2011 à 23:08 +0100, Colin Guthrie a écrit :
+> 'Twas brillig, and David W. Hodgins at 22/06/11 22:51 did gyre and gimble:
+> > On Wed, 22 Jun 2011 16:47:40 -0400, Radu-Cristian FOTESCU
+> > <beranger5ca at yahoo.ca> wrote:
+> > 
+> >> As long as '/usr/bin/env python' _works_, I see no point in trying to
+> >> rewrite other people's work.
+> > 
+> > Excluding the calibre scripts, in /usr/bin of a Mageia 1 kde clean
+> > installation ...
+> > # grep -I python *|grep '#!'|grep env
+> > ebook-convert:#!/usr/bin/env python
+> > ebook-device:#!/usr/bin/env python
+> > ebook-meta:#!/usr/bin/env python
+> > ebook-viewer:#!/usr/bin/env python
+> > epub-fix:#!/usr/bin/env python
+> > fetch-ebook-metadata:#!/usr/bin/env python
+> > gsettings-schema-convert:#!/usr/bin/env python
+> > jack_control:#!/usr/bin/env python
+> > lrf2lrs:#!/usr/bin/env python
+> > lrfviewer:#!/usr/bin/env python
+> > lrs2lrf:#!/usr/bin/env python
+> > markdown-calibre:#!/usr/bin/env python
+> > pdfmanipulate:#!/usr/bin/env python
+> > pykdeuic4:#!/usr/bin/env python
+> > pykdeuic4:header = """#!/usr/bin/env python
+> > web2disk:#!/usr/bin/env python
+> > 
+> > In general, I agree with you.  If it isn't broken, don't fix it.
+> > 
+> > However, in this case, the python2 had to be changed to python.
+> > 
+> > The environment is not being modified, so it is adding an unneeded process,
+> > which should be discouraged.
+> > 
+> > Since you have to change the line anyway, I have to agree with Ahmad, that
+> > it should be changed to #!/usr/bin/python.
+> 
+> 
+> I think it's relatively unimportant overall, but:
+> 
+>  1) /usr/bin/python should be marginally faster
+>  2) /usr/bin/python prevents you testing easily with a new python
+> version (or just a new build) in a custom prefix).
+> 
+> So 1) is a (very slight) pro for everyone, but 2) is a pretty big con
+> for developers playing with python builds.... of course in that case a
+> simple "sudo mv /usr/bin/python /usr/bin/python.orig; ln -s
+> /path/to/my/custom/build/of/python /usr/bin/python" should allow said
+> developer to test fine.
+
+If python point to a different version ( like some self compiled python
+2.6, or python 3 ), I fear that using env will silently break lots of
+applications, since the library and modules would likely not be there.
+
+
+-- 
+Michael Scherer
+
+