[PATCH] Makefile: add install-mac for framework-based Python installations (issue1412)
dackze at gmail.com
Mon Jan 5 02:08:10 CST 2009
On Jan 5, 2009, at 12:45 AM, Matt Mackall wrote:
> On Sun, 2009-01-04 at 19:16 -0500, Brodie Rao wrote:
>> # HG changeset patch
>> # User Brodie Rao <me+hg at dackz.net>
>> # Date 1231029019 18000
>> # Node ID 08023510ff113657ef96eb0ef32b86f661062899
>> # Parent 49355875c8054259ffcf4bc913a8d97ff89330b1
>> Makefile: add install-mac for framework-based Python installations
>> Apple's distributions and python.org's binary distributions of
>> Python are
>> installed as self-contained frameworks. In this case site-packages
>> live under /usr/local, and --prefix is already properly configured
>> by the
>> Python installation.
> If you think site-packages normally live under /usr/local/ on, say,
> Linux, you have incompletely understood the problem. There's nothing
> special about OS X here.
> The point here is to *not* install packages by default into filesystem
> spaces controlled and owned by the system software, package managers
> installers so as to not interfere with those tools. This lets people
> have a clear separation between "managed" (automatically installed and
> upgraded) and "unmanaged" (hand-installed and upgraded).
> The bottom line is if you're installing a package from source, you're
> expected to know where things belong on your particular operating
> Mathematics is the supreme nostalgia of our time.
If --prefix is removed for installation on OS X, scripts correctly go
into /usr/local/bin and packages into /Library/Python/2.5/site-
packages, which is the designated place for site-specific packages
under OS X. This is the designated place for unmanaged packages, as
opposed to /System/Library/Frameworks/Python.framework/Versions/2.5/
lib/python2.5/site-packages for system-managed packages.
If --prefix is left in, Mercurial is installed into /usr/local/
python2.5/site-packages. Running hg results in an ImportError because
this folder isn't used by Apple's distribution of Python, effectively
leaving hg in an unusable state.
The point is that --prefix must be omitted for OS X, as it's already
properly configured to install into the unmanaged package area, and
inserting it makes it impossible to install Mercurial correctly using
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