[dev-context] internal mptopdf not found in Context MkIV 2013.04.20

Sanjoy Mahajan sanjoy at olin.edu
Sun Jun 30 16:24:21 CEST 2013

Partly to test Norbert's TeXLive 2013 packages for Debian, I just
installed the whole set of packages, which include Context MkIV
2013.04.20.  With it I get an error not present with the older (2012)
format, namely that the internal conversion of mps files to pdf fails.

I don't know whether it is a Debian-specific problem or shared with
upstream, hence I am also sending this to dev-context.

Here's the minimal example (mytest.tex):


(You'll need an actual mps file of that name to get the error below.)

Then running it with

  $ context --trackers=list mytest

produces the error

  graphics        > inclusion > no converter for 'mps' to 'pdf'
  [MP to PDF]
  ! LuaTeX error [string "\directlua "]:1: attempt to index field 'mptopdf' (a nil value)

Here's the full log:

mtx-context     | warning: no (local) file './mytest', proceeding
mtx-context     | run 1: luatex --fmt="/var/lib/texmf/luatex-cache/context/f919750633122078d706dd10f1cfd39b/formats/luatex/cont-en" --jobname="mytest" --lua="/var/lib/texmf/luatex-cache/context/f919750633122078d706dd10f1cfd39b/formats/luatex/cont-en.lui" --no-parse-first-line --c:currentrun=1 --c:fulljobname="./mytest" --c:input="./mytest" --c:kindofrun=1 --c:maxnofruns=8 --c:trackers="list" "cont-yes.mkiv"
This is LuaTeX, Version beta-0.76.0-2013052015 (rev 4627) 
 \write18 enabled.

ConTeXt  ver: 2013.04.20 01:15 MKIV current  fmt: 2013.6.28  int: english/english

system          > 'cont-new.mkiv' loaded
system          > files > jobname 'mytest', input './mytest', result 'mytest'
fonts           > latin modern fonts are not preloaded
languages       > language 'en' is active
fonts           > preloading latin modern fonts (second stage)
fonts           > typescripts > unknown library 'loc'
fonts           > 'fallback modern rm 12pt' is loaded
graphics        > inclusion > checking conversion of 'fig/whole-tree.1', fullname 'fig/whole-tree.1', old format 'mps', new format 'pdf', conversion 'default', resolution 'default'
graphics        > inclusion > no converter for 'mps' to 'pdf'
[MP to PDF]
! LuaTeX error [string "\directlua "]:1: attempt to index field 'mptopdf' (a nil value)
stack traceback:
	[string "\directlua "]:1: in main chunk.

system          > tex > error on line 4 in file /home/sanjoy/sfse/mytest.tex: LuaTeX error  ...

1     \enabletrackers[graphics.conversion]
2     \starttext
3     \externalfigure[fig/whole-tree.1]
4 >>  \stoptext

\convertMPtoPDF ...onvertmpstopdf("\MPfilename ")}
                                                  \removeunwantedspaces \egr...
\grph_include_process_mps ...convertMPtoPDF {#1}11
l.4 }
\grph_include_place ...e \ctxlua {figures.check()}
                                                  \ctxlua {figures.include()...
\grph_include_figure ...include_place [#1][#2][#3]
\syst_helpers_triple_empty_two_spaced ...{#2}][][]
l.4 \stoptext
? X

mkiv lua stats  > used config file: selfautodir:/share/texmf/web2c/texmfcnf.lua
mkiv lua stats  > used cache path: readable: '/var/lib/texmf/luatex-cache/context/f919750633122078d706dd10f1cfd39b' | readable+writable: '/home/sanjoy/.texmf-var/luatex-cache/context/f919750633122078d706dd10f1cfd39b'
mkiv lua stats  > resource resolver: loadtime 0.113 seconds, 0 scans with scantime 0.000 seconds, 0 shared scans, 12 found files, scanned paths: <none>
mkiv lua stats  > stored bytecode data: 326 modules (0.400 sec), 69 tables (0.000 sec), 395 chunks (0.400 sec)
mkiv lua stats  > cleaned up reserved nodes: 38 nodes, 9 lists of 441
mkiv lua stats  > node memory usage: 2 hlist, 12 attribute, 21 glue_spec, 4 attribute_list, 3 temp, 3 if_stack, 4 dir
mkiv lua stats  > used backend: pdf (backend for directly generating pdf output)
mkiv lua stats  > loaded patterns: en::2
mkiv lua stats  > jobdata time: 0.000 seconds saving, 0.002 seconds loading
mkiv lua stats  > callbacks: 38 direct, 179 indirect, 217 total
mkiv lua stats  > randomizer: resumed with value 0.27778996726395
mkiv lua stats  > result saved in file: mytest.pdf, compresslevel 3, objectcompreslevel 3
mkiv lua stats  > loaded fonts: 2 files: latinmodern-math.otf lmroman12-regular.otf
mkiv lua stats  > fonts load time: 0.320 seconds 
mkiv lua stats  > luatex banner: this is luatex, version beta-0.76.0-2013052015  (tex live 2013/dev/debian)(rev 4627)
mkiv lua stats  > control sequences: 37286 of 65536 + 100000
mkiv lua stats  > current memory usage: 25 MB (ctx: 24 MB)
mkiv lua stats  > runtime: 277.615 seconds

mtx-context     | fatal error: return code: 1

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