On 19 March 2012 06:46, Juan Pablo Carbajal <carba...@ifi.uzh.ch> wrote:
> 2012/3/19 Carnë Draug <carandraug+...@gmail.com>:
>> On 19 March 2012 00:54, Carnë Draug <carandraug+...@gmail.com> wrote:
>>> On 18 March 2012 15:23, Philip Nienhuis <pr.nienh...@hccnet.nl> wrote:
>>>> I tried to update the linear-algebra package as ordinary user and that
>>>> proceeds OK as well; so I conclude there's something wrong in the io pkg
>>>> setup in the ./src subdir.
>>>
>>> Actually the problem seems to be with PKG_ADD as it installs fine if I
>>> remove it. I don't have experience with it and the documentation isn't
>>> very helpful either. I'm trying to look at pkg.m source and see how it
>>> works exactly. It appears to me that when installing the package, a
>>> PKG_ADD file is added to both the .m and .oct directories and the
>>> scripts are ran before the package is loaded. However, since there's
>>> no chk_spreadsheet_support script inside the .oct directory it fails
>>> (remember the package is not loaded yet and therefore the function is
>>> not on the seach path). At least that's what I think is happening.
>>>
>>> I tried to test this by not making the package autoload but that
>>> doesn't solve the problem so maybe it's not that. I'll keep
>>> investigating.
>>
>> I've been looking into this for a while (all the try catch blocks in
>> pkg don't make it much easy) and here's what I found thus far:
>>
>> * the reason why the error still occurs even when autoload is off is
>> because pkg always loads the package at the end of an installation for
>> a short while to generate a cache for documentation
>> * removing the java package solves the problem sincee
>> chk_spreadsheet_support never gets called that way (this took me a
>> while to understand because I kept getting the same error even after
>> removing the src/ directory)
>>
>> I don't understand why you only get the error when you run it as
>> normal user and not as root, that kind of error doesn't validate my
>> hypothesis of being a problem of using a function that is not loaded
>> yet. It kind points to some problem with pkg prefix (or something that
>> uses it).
>>
>> I have created a post_install script that removes the file and that
>> solves the problem (I have hardcoded the path but I think it's
>> possible to guess it with pkg). However, it seems to me that the best
>> approach is to fix something in octave-core. Or maybe not. Maybe it
>> doesn't make sense to have PKG_ADD calling a function that belongs to
>> the package that is gonna be loaded.
>>
> I cannot reproduce the problem. I tried several ways of installing io
> from svn. All of them work. I see no pre_install.m function.
I didn't commit the post_install.m file because it was hardcoded. The
content of the file was
function post_install (desc)
[err, msg] = unlink
("/home/carandraug/octave/io-1.0.18/i686-pc-linux-gnu-api-v48+/PKG_ADD");
endfunction
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