[Octave-bug-tracker] [bug #51632] MS Windows portable (i.e. zip) version cannot find pre-installed packages, needs pkg rebuild, not mentioned at first run

[Nicholas Jankowski]

Follow-up Comment #4, bug #51632 (project octave):

just to answer my own question: no, currently octave_packages cannot handle
variables in paths. 

Took my octave_packages file, replaced the absolute paths for the signal
package from

C:\Octave\OCTAVE~1.1\lib\octave\packages\signal-1.3.2

to 

%OCT_HOME%lib\octave\packages\signal-1.3.2

It renders the entire file unreadable to a 'pkg list'. i.e.:

pkg list: 


>> pkg list
Package Name         | Version | Installation directory
---------------------+---------+-----------------------
     communications  |   1.2.1 |
...\share\octave\packages\communications-1.2.1
            control  |   3.0.0 | ...\share\octave\packages\control-3.0.0
     data-smoothing  |   1.3.0 |
...\share\octave\packages\data-smoothing-1.3.0
           database  |   2.4.2 | ...\share\octave\packages\database-2.4.2
          dataframe  |   1.1.0 | ...\share\octave\packages\dataframe-1.1.0
              dicom  |   0.2.0 | ...\share\octave\packages\dicom-0.2.0
          financial  |   0.5.0 | ...\share\octave\packages\financial-0.5.0
               fits  |   1.0.7 |
...\OCTAVE~1.1\share\octave\packages\fits-1.0.7
fuzzy-logic-toolkit  |   0.4.5 |
...\octave\packages\fuzzy-logic-toolkit-0.4.5
                 ga  |  0.10.0 |
...\OCTAVE~1.1\share\octave\packages\ga-0.10.0
            general  |   2.0.0 | ...\share\octave\packages\general-2.0.0
      generate_html  |   0.3.1 |
...\share\octave\packages\generate_html-0.3.1
           geometry  |   3.0.0 | ...\share\octave\packages\geometry-3.0.0
                gsl  |   2.0.0 |
...\OCTAVE~1.1\share\octave\packages\gsl-2.0.0
              image  |   2.6.1 | ...\share\octave\packages\image-2.6.1
 instrument-control  |   0.2.3 | ...\octave\packages\instrument-control-0.2.3
           interval  |   2.1.0 | ...\share\octave\packages\interval-2.1.0
                 io  |   2.4.7 |
...\OCTAVE~1.1\share\octave\packages\io-2.4.7
     linear-algebra  |   2.2.2 |
...\share\octave\packages\linear-algebra-2.2.2
               lssa  |   0.1.2 |
...\OCTAVE~1.1\share\octave\packages\lssa-0.1.2
              ltfat  |   2.2.0 | ...\share\octave\packages\ltfat-2.2.0
            mapping  |   1.2.1 | ...\share\octave\packages\mapping-1.2.1
      miscellaneous  |   1.2.1 |
...\share\octave\packages\miscellaneous-1.2.1
                nan  |   3.1.2 |
...\OCTAVE~1.1\share\octave\packages\nan-3.1.2
             netcdf  |  1.0.11 | ...\share\octave\packages\netcdf-1.0.11
              nurbs  |  1.3.13 | ...\share\octave\packages\nurbs-1.3.13
                ocs  |   0.1.5 |
...\OCTAVE~1.1\share\octave\packages\ocs-0.1.5
             odepkg  |   0.8.5 | ...\share\octave\packages\odepkg-0.8.5
              optim  |   1.5.2 | ...\share\octave\packages\optim-1.5.2
         quaternion  |   2.4.0 | ...\share\octave\packages\quaternion-2.4.0
           queueing  |   1.2.5 | ...\share\octave\packages\queueing-1.2.5
             signal  |   1.3.2 | ...\share\octave\packages\signal-1.3.2
            sockets  |   1.2.0 | ...\share\octave\packages\sockets-1.2.0
          sparsersb  |   1.0.5 | ...\share\octave\packages\sparsersb-1.0.5
            specfun  |   1.1.0 | ...\share\octave\packages\specfun-1.1.0
            splines  |   1.3.2 | ...\share\octave\packages\splines-1.3.2
         statistics  |   1.3.0 | ...\share\octave\packages\statistics-1.3.0
                stk  |   2.4.2 |
...\OCTAVE~1.1\share\octave\packages\stk-2.4.2
            strings  |   1.2.0 | ...\share\octave\packages\strings-1.2.0
             struct  |  1.0.14 | ...\share\octave\packages\struct-1.0.14
           symbolic  |   2.6.0 | ...\share\octave\packages\symbolic-2.6.0
             tisean  |   0.2.3 | ...\share\octave\packages\tisean-0.2.3
                tsa  |   4.4.5 |
...\OCTAVE~1.1\share\octave\packages\tsa-4.4.5
              video  |   1.2.4 | ...\share\octave\packages\video-1.2.4
            windows  |   1.2.4 | ...\share\octave\packages\windows-1.2.4
             zeromq  |   1.2.1 | ...\share\octave\packages\zeromq-1.2.1


manually change paths in signal section of octave_packages to: 


# name: dir
# type: sq_string
# elements: 1
# length: 55
%OCT_HOME%share\octave\packages\signal-1.3.2


# name: archprefix
# type: sq_string
# elements: 1
# length: 53
%OCT_HOME%lib\octave\packages\signal-1.3.2



and get:


>> pkg list
no packages installed.


change it back to "C:\Octave\Octave~1.1..." and 'pkg list' returns to normal.

so something about that syntax prevents pkg from parsing the entire file. 
(also tested by changing the path to signal and going a 'pkg load control' and
'pkg load video', each listed before and after signal in the file,
respectively. pkg returned a 'package control not installed' until I removed
the %OCT_HOME% from signal.)

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