Re: [PyX-devel] Installing PyX to a non-standard location.

[Andrea R. <ari...@pi...>]

Hi Andre,
I see your point, and I've made a lot of trials. But I wasn't able to  
get fink to install properly PyX without my patch.

AFA I can understand there are two problems here. I hope to be clear  
even if my english is not so good... :-(

First of all I'll summarize how Fink works. Here there are the main  
steps (AFA I understood them):

1) fink create a new subtree: /sw/src/root-packagename

2) and put in there the expanded tarball and compile it

3) then it create another new subtree: /sw/src/root-packagename/sw

4) and it installs all the files under that subtree

5) at the end of this process you have all your files (in the case of  
PyX) under:

/sw/src/root-pyx-wierda-py23-0.7-6/sw/lib/python2.3/site-packages/pyx- 
py23

/sw/src/root-pyx-wierda-py23-0.7-6/sw/share/pyx-py23

/sw/src/root-pyx-wierda-py23-0.7-6/sw/etc

5) at this point fink calls dpkg (the debian utily) that create a sort  
of debian package.

6) eventually dpkg installs the new package in the right location.

Given the above picture let me start with the first problem.

** pyxrc subtree **

Without the patch line:

> --- PyX-0.7/setup.py.orig       Mon Nov 15 16:30:04 2004                
>                                        +++ PyX-0.7/setup.py    Tue Nov  
> 16 13:24:08 2004
> @@ -53,7 +53,7 @@
>                               "pyx/lfs/foils30pt.lfs",                  
>                                                                       
> "contrib/pyx.def"]),                                                    
>                         # /etc is taken relative to "setup.py install  
> --root=..."                                      -               
> ("/etc", ["pyxrc"])]                                                    
>                         +              ("@PREFIX@/etc", ["pyxrc"])]

self.root is '/sw/src/root-pyx-wierda-py23-0.7-6' and the pyxrc file is  
written under /etc (not /sw/etc!!). As a side effect when the user try  
to remove pyx (with fink remove pyx) dpkg recognize that the only file  
that it has ever installed in /etc is pyxrc and so it removes /etc as  
well!! I've been lucky enough that /etc under MacOSX is a sym-link and  
not the effective directory!!!

** siteconfig.py **

Given the way in which Fink perform the installation process  
sitecofing.py contains the following lines:

lfsdir = '/sw/src/root-pyx-wierda-py23-0.7-6/sw/share/pyx'
sharedir = '/sw/src/root-pyx-wierda-py23-0.7-6/sw/share/pyx'
pyxrc = '/sw/src/root-pyx-wierda-py23-0.7-6/etc/pyxrc'

because self.install_dir is '/sw/src/root-pyx-wierda-py23-0.7-6/sw' so  
that PyX fails. The following patch fix the problem:

> --- PyX-0.7/setup.py.orig       Mon Nov 15 16:30:04 2004
> +++ PyX-0.7/setup.py    Tue Nov 16 13:24:08 2004
>
> @@ -95,8 +98,11 @@
>
>      def run(self):
>          install_data.run(self)
> -        self.pyx_lfsdir = self.pyx_sharedir =  
> os.path.join(self.install_dir, "share", "pyx")
> -        self.pyx_pyxrc = os.path.join(self.root or "/", "etc",  
> "pyxrc")
> +        self.pyx_lfsdir = self.pyx_sharedir =  
> os.path.join("@PREFIX@", "share", "pyx-py@PYTHON_FLAVOR@")
> +        self.pyx_pyxrc = os.path.join("@PREFIX@", "etc", "pyxrc")


Evetually the @PYTHON_FLAVOR@ is mandatory because Fink still has  
Python 2.2 and 2.3 flavours and a user may want to have both installed.

Any suggestion is welcome.

Cheers,
   Andrea.