PGF Backend with LuaLaTeX: Permission denied error

[lachholden]

Using the PGF backend for Matplotlib, a permission denied error is occurring when using LuaLaTeX as the texsystem.

The minimal example as follows:

import matplotlib as mpl

mpl.use('pgf')
mplparams = {
    "font.family": "serif",
    "text.usetex": True,
    "pgf.texsystem": "lualatex",
    "pgf.rcfonts": False,
    "pgf.preamble": [r"\usepackage{fourier}"]
}
mpl.rcParams.update(mplparams)

import matplotlib.pyplot as plt
plt.title("Example Plot")
plt.plot([1, 2, 3, 4, 5])

plt.savefig('output.pdf')

Gives me the following error:

This is LuaTeX, Version beta-0.76.0-2013062820 (rev 4627)
(c:/users/lholden/appdata/local/temp/mpl_pgf_5oh3zg/figure.tex
LaTeX2e <2011/06/27>
Babel <v3.8m> and hyphenation patterns for english, afrikaans, ancientgreek, ara

<snip>

*geometry* driver: auto-detecting
*geometry* detected driver: pdftex
(C:/Users/LHolden/AppData/Roaming/MiKTeX/2.9/tex/context/base/supp-pdf.mkii
[Loading MPS to PDF converter (version 2006.09.02).]
) ABD: EveryShipout initializing macroslualatex: Permission denied: c:/users/lho
lden/appdata/local/temp/mpl_pgf_5oh3zg/figure.pgf
lualatex: Data: c:/users/lholden/appdata/local/temp/mpl_pgf_5oh3zg/figure.pgf

I'm using 64-bit Python 2.7.8 from Anaconda 2.1.0, running Windows 8. luatex --version results in This is LuaTeX, Version beta-0.76.0-2013062820 (MiKTeX 2.9) (rev 4627). I am on version 1.4.2 of matplotlib.

Executing the same example within an administrator command prompt gave the same result. The same example with "pgf.texsystem": "lualatex" commented out completed successfully, except only the numbers were in the font specified in the preamble - the text was still in the default font.

[lachholden]

Update:
After reading that xelatex was the default texsystem, I tried again changing pgf.texsystem to pdflatex, which worked perfectly. This error has only occurred for me when using lualatex.

[tacaswell]

pgf is making the temporary directories using the standard library machinery and on skimming seems to dot all it's i's and cross all it's t's with the file writing.

I strongly suspect that something is borked with your luatex installation.

[lachholden]

Tried removing and reintalling all lua* packages within MikTeX with no success. Will try uninstalling and doing a fresh reinstall of MikTeX in a little bit and will report back.

[lachholden]

Update:
Complete re-install of MikTeX completed, still getting the same error.

[cgohlke]

I can reproduce this issue.

[jankatins]

I can't reproduce this (win7, no admin, portable miktex, updated a few month ago, mpl 1.5.1, conda system)

[cgohlke]

I can also no longer reproduce this issue with mpl 1.5.1 and LuaTeX beta-0.80.0.

[anntzer]

Closing for lack of activity and reproduction.
Feel free to request a reopen if still an issue.