[GRASS-dev] [GRASS GIS] #2968: g.extension problem with module containing various python files: "ImportError: No module named"

[GRASS GIS]

#2968: g.extension problem with module containing various python files:
"ImportError: No module named"
-------------------------+-------------------------
 Reporter:  lrntct       |      Owner:  grass-dev@…
     Type:  defect       |     Status:  new
 Priority:  major        |  Milestone:  7.0.4
Component:  Addons       |    Version:  svn-trunk
 Keywords:  g.extension  |        CPU:  x86-64
 Platform:  Linux        |
-------------------------+-------------------------
 I encounter an error while trying to install r.agent:
 {{{
 Fetching <r.agent> from GRASS GIS Addons repository (be patient)...
 Compiling...
 Traceback (most recent call last):
   File "/tmp/grass7-laurent-26795/tmpSuOPAa/r.agent/scripts/r.agent.aco",
 line 234, in <module>
     import error, grassland, anthill
 ImportError: No module named error
 make[1]: *** [r.agent.aco.tmp.html] Error 1
 /bin/sh: 1: cannot create /usr/lib/grass71/error.log: Permission denied
 make: *** [r.agent.aco] Error 2
 ERROR: Compilation failed, sorry. Please check above error messages.
 }}}

 The same error occurs while trying to install v.class.ml (although it
 worked once, but then stopped working):
 {{{
 Fetching <v.class.ml> from GRASS GIS Addons repository (be patient)...
 Compiling...
 Traceback (most recent call last):
   File
 "/tmp/grass7-laurent-26795/tmpZf46jp/v.class.ml/scripts/v.class.ml", line
 386, in <module>
     from training_extraction import extract_training
 ImportError: No module named training_extraction
 make: *** [v.class.ml.tmp.html] Error 1
 ERROR: Compilation failed, sorry. Please check above error messages.
 }}}

 It seems to be related to python modules that includes several python
 files.
 I encounter the same problem with a module of mine(cf.
 https://lists.osgeo.org/pipermail/grass-dev/2016-March/079481.html)

 Meanwhile, v.in.wfs2 installation goes well, although its Makefile is very
 similar to v.class.ml.

 It might be related to :
 #2480 #2534 #2865

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Ticket URL: <https://trac.osgeo.org/grass/ticket/2968>
GRASS GIS <https://grass.osgeo.org>