Hello,
while rebuilding my Windows system after a disk crash I moved from PyX 0.81 and
MikTeX 2.4 to PyX 0.9 and MikTeX 2.6. After that upgrade, I had two problems
getting an existing PyX program to work again.
The minor problem was that by default, MikTeX uses an installation folder
containing a blank, e.g. "MikTeX 2.6", which PyX 0.9 can't handle. Fortenately,
the patch for text.py in revision 2858 solved the problem.
The bigger problem was that PyX wouldn't find a PostScript header file named
8r.enc. I had installed PyX without building any extension modules and tracked
that down to pykpathsea.find_file, which makes a call to kpsewhich to search
through the local TeX installation.
Calling kpsewhich --help in a Windows shell returns
Usage: kpsewhich [OPTION...]
-alias=APP Pretend to be APP, i.e., use APP's configuration
settings when searching for files.
-expand-path=PATH Deprecated.
-expand-var=VAR Deprecated.
-engine=ENGINE Unsupported.
-file-type=FILETYPE The type of the file to search for.
-format=FORMAT Deprecated.
-list-file-types List known file types.
-must-exist Run the package installer, if necessary.
-progname=PROGNAME Deprecated.
-show-path=FILETYPE Show the search path for a certain file type.
-start Start the associated program.
-version Print version information and exit.
Help options:
-?, --help Show this help message
--usage Display brief usage message
After some experimenting with option syntax and quoting, I came up with
the following hacked version of find_file:
def find_file(filename, kpse_file_format):
#command = 'kpsewhich --format="%s" %s' % (kpse_file_format, filename)
if ' ' in kpse_file_format:
#command = 'kpsewhich --file-type="%s" %s' % (kpse_file_format,
filename)
command = 'kpsewhich "%s" %s' % (kpse_file_format, filename)
else:
#command = 'kpsewhich "%s" %s' % (kpse_file_format, filename)
#command = 'kpsewhich %s %s' % (kpse_file_format, filename)
command = 'kpsewhich --format="%s" %s' % (kpse_file_format, filename)
command = 'kpsewhich --format=%s %s' % (kpse_file_format, filename)
command = 'kpsewhich --file-type="%s" %s' % (kpse_file_format,
filename)
command = 'kpsewhich --file-type=%s %s' % (kpse_file_format,
filename)
if not find_file_cache.has_key(command):
find_file_cache[command] = os.popen(command, "r").readline().strip()
return find_file_cache[command]
Please note that the duplicate assignments to command are in there just to
illustrate what worked for me and what did not (so I commented it out).
Unfortenately, I could not find a form for the call to kpsewhich that worked
under all circumstances. I used --filetype instead of --format because
according to the kpsewhich usage string that is supposed to be deprecated.
I don't know whether my version of find_file would work on other platforms or
even with other TeX distributions for Windows. Hopefully, somebody who knows
more about PyX and TeX could look at this and provide a solution that can make
it into the next version of PyX?
Thanks, Malte
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