From: Alan Mackenzie <acm@muc.de>
To: David De La Harpe Golden <david@harpegolden.net>
Cc: Andreas Schwab <schwab@linux-m68k.org>, emacs-devel@gnu.org
Subject: Re: 'bzr init-repo .' crashes for lack of module bz2. Help, please!
Date: Sun, 3 Jan 2010 17:33:42 +0000 [thread overview]
Message-ID: <20100103173342.GA1653@muc.de> (raw)
In-Reply-To: <4B3CD9A9.9030705@harpegolden.net>
Hi, David,
On Thu, Dec 31, 2009 at 05:04:41PM +0000, David De La Harpe Golden wrote:
> Alan Mackenzie wrote:
> >I was lacking this file [bzlib.h], so I downloaded and built the
> >latest version of bzip2.
> And rebuild python against this version, right, with "bz2" absent from
> the list of modules that failed to build this time due to failure to
> "find the necessary bits"? Does the "python" to
> get a python repl then "import bz2" test succeed now?
That's what I did, and no "import bz2" didn't succeed. However, it did
once I'd remembered to do "make install" on the newly build Python.
[ .... ]
> >I still get the same error message, which I don't understand,
> >namely:
> > bzr: ERROR: exceptions.ImportError: failed to load
> > bzrlib.repofmt.groupcompress_repo.RepositoryFormat2a: No module
> > named bz2
> >Presumably "bzrlib.repofmt.groupcompress_repo" means the file
> >.../bzrlib/repofmt/groupcompress_repo.py, but what, exactly, is a "module
> >named bz2"?
> In this case, it means a python extension "module" being a python
> binding to libbz2 (*). Such extensions are atypical python modules
> implemented as C libs rather than python. The C code uses the python C
> implementation's ("cpython") C API to act like a python module to python
> code running under that implementation, providing additional
> python-callable functions and python-usable data types. It's actually a
> pretty typical way of extending scripting languages implemented in C,
> though python has now also introduced the more Lisp-conventional "FFI"
> approach for such things in module "ctypes" (just mentioning for
> completeness).
> http://docs.python.org/extending/index.html
> http://docs.python.org/library/ctypes.html
Thanks for this explanation.
I've now got bzip2, Python and bzr installed and talking to each other,
such that I can carry on with the BzrForEmacsDevs on the Emacs wiki.
Thanks!
--
Alan Mackenzie (Nuremberg, Germany).
next prev parent reply other threads:[~2010-01-03 17:33 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-28 17:04 'bzr init-repo .' crashes for lack of module bz2. Help, please! Alan Mackenzie
2009-12-28 21:14 ` Karl Fogel
2009-12-28 23:05 ` David De La Harpe Golden
2009-12-29 20:08 ` Alan Mackenzie
2009-12-29 20:19 ` Andreas Schwab
2009-12-29 20:57 ` Alan Mackenzie
2009-12-29 23:49 ` David De La Harpe Golden
2009-12-31 12:06 ` Alan Mackenzie
2009-12-31 17:04 ` David De La Harpe Golden
2010-01-03 17:33 ` Alan Mackenzie [this message]
2010-01-03 18:16 ` Tassilo Horn
2010-01-03 21:56 ` Alan Mackenzie
2010-01-04 0:06 ` Miles Bader
2010-01-04 0:13 ` Jason Rumney
2010-01-06 13:30 ` Alan Mackenzie
2010-01-04 8:16 ` Tassilo Horn
2010-01-04 16:23 ` Richard Stallman
2010-01-04 20:42 ` Gentoo GNU/Linux and non-free packages (was: 'bzr init-repo .' crashes for lack of module bz2. Help, please!) Tassilo Horn
2010-01-05 9:03 ` Gentoo GNU/Linux and non-free packages Ulrich Mueller
2010-01-05 20:45 ` Richard Stallman
2010-01-05 20:45 ` Gentoo GNU/Linux and non-free packages (was: 'bzr init-repo .' crashes for lack of module bz2. Help, please!) Richard Stallman
2010-01-06 0:10 ` Jonas Bernoulli
2010-01-06 20:45 ` Richard Stallman
2010-01-07 8:35 ` Gentoo GNU/Linux and non-free packages Tassilo Horn
2010-01-07 22:49 ` Richard Stallman
2010-01-08 0:06 ` Marek Aaron Sapota
2010-01-08 9:30 ` Tassilo Horn
2010-01-08 11:20 ` Marek Aaron Sapota
[not found] ` <20100108111454.GC1426@fencepost.localnet>
2010-01-08 11:56 ` Tassilo Horn
2010-01-08 12:44 ` Marek Aaron Sapota
2010-01-08 14:44 ` Tassilo Horn
2010-01-08 15:47 ` Marek Aaron Sapota
2010-01-08 15:23 ` Yavor Doganov
2010-01-08 15:57 ` Marek Aaron Sapota
2010-01-08 16:23 ` Tassilo Horn
2010-01-08 16:46 ` David Kastrup
2010-01-08 8:56 ` Tassilo Horn
2010-01-08 23:01 ` Richard Stallman
2010-01-06 7:35 ` Tassilo Horn
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