bug#29365: openmolar looking in /usr/share/openmolar

[Quiliro Ordonez Baca <quiliro@riseup.net>]

Chris Marusich <cmmarusich@gmail.com> writes:

> Quiliro Ordonez Baca <quiliro@riseup.net> writes:
>
>> When starting OpenMolar for the first time, it has an error when it
>> creates the application database: 
>>
>> ERROR - error creating database tables
>> Traceback (most recent call last):
>>   File "/gnu/store/smx5rayf45ylqn59czjkvx2hcrl95p5x-openmolar-1.0.15-gd81f9e5/lib/python3.5/site-packages/openmolar/create_db.py", line 145, in create_tables
>>     f = open(fp, "r")
>> FileNotFoundError: [Errno 2] No existe el fichero o el directorio: '/usr/share/openmolar/resources/schema.sql'
>>
>> when it should look for the following file:
>> /gnu/store/smx5rayf45ylqn59czjkvx2hcrl95p5x-openmolar-1.0.15-gd81f9e5/share/openmolar/resources/schema.sql
>>
>> The flaw in the definition is in:
>> /gnu/store/smx5rayf45ylqn59czjkvx2hcrl95p5x-openmolar-1.0.15-gd81f9e5/lib/python3.5/site-packages/openmolar/settings/localsettings.py:    SHARE_DIR = os.path.join("/usr", "share", "openmolar")
>>
>> I do not know haw to fix it. Please instruct how to do it.
>
> Based on your assessment, it looks like the problem is that the
> application hard-codes the "/usr" directory path.

Yes.

> One solution for this problem is to replace that line of code in the
> source with the correct path.  You can do this in the package definition
> by using the substitute* macro provided by the (guix build utils)
> module.  In fact, it looks like the current package definition for
> openmolar already attempts to do this.  Run "guix edit openmolar" to
> view the current package definition.

Exactly. It already attempts to do that in:

   (arguments
    `(#:use-setuptools? #f
      #:phases
      (modify-phases %standard-phases
        (add-after 'unpack 'patch-/usr
          (lambda* (#:key outputs #:allow-other-keys)
            (substitute* "setup.py"
              (("/usr") (assoc-ref outputs "out")))
            #t)))))

> Perhaps you could modify the package definition to also replace the path
> in localsettings.py?  You might also want to look around in the source
> for other paths that need to be fixed (a command such as "grep -r /usr"
> might be helpful).

$ grep -R /usr
lib/python3.5/site-packages/openmolar/dbtools/records_in_use.py:#! /usr/bin/env p
lib/python3.5/site-packages/openmolar/settings/localsettings.py:    SHARE_DIR = os.path.join("/usr", "share", "openmolar")
Coincidencia en el fichero binario lib/python3.5/site-packages/openmolar/settings/__pycache__/localsettings.cpython-35.pyc

openmolar has three dependencies:
python-pyqt+sqcintilla
python-mysqlclient
qscintilla

But only python-pyqt+sqcintilla files have /usr on them (besides openmolar's). Perhaps the
problem is that package definition. But I cannot figure how to do it yet.

> For information on how to use substitute*, please refer to
> guix/build/utils.scm in the Guix source tree.  For general information
> on hacking on Guix, check the section titled "Contributing" in the
> manual (e.g., run info '(guix) Contributing' in a terminal).

I find that it is needed to download the source. But I do not have a
connection to the web. I have to travel 1 hour every time I need to
connect. Is there any way i can use Emacs to have all necesary files for
hacking on Guix?