Re: [Fink-devel] Variants and multiple-choice dependencies

[Charles L. <cl...@gm...>]

On Sun, Nov 23, 2008 at 10:57 AM, Daniel Macks <dm...@ne...> wrote:
> On Sat, Nov 22, 2008 at 08:05:50PM -0500, Charles Lepple wrote:
>> Trying to be clever, I wanted to modify the Trac info file such that
>> it would not require pysqlite2-py26. (Python 2.5 and later come with
>> the sqlite3 library, which is compatible with pysqlite2.)
>>
>> Here's the crazy dependency line:
>>
>> Depends: <<
>> ...
>>     (%type_raw[python] = 2.6) python26 |
>>     (%type_raw[python] = 2.5) python25 |
>>     (%type_raw[python] = 2.4) pysqlite2-py%type_pkg[python] (>=
>> 2.4.1-1) |
>>      mysql-python-py%type_pkg[python] | psycopg2-py%type_pkg[python],
>> ...
>>
>> The basic idea is that you can use either SQLite, MySQL, or Postgres
>> as your database backend.
>>
>> However, the above expands as follows (in -py26, -py25 and -py24
>> variants):
>>
>>     depends: ..., python26 | mysql-python-py26 | psycopg2-py26, ...
>>
>>     depends: ..., pysqlite2-py25 (>= 2.4.1-1) | mysql-python-py25 |
>> psycopg2-py25, ...
>>
>>     depends: ..., pysqlite2-py24 (>= 2.4.1-1) | mysql-python-py24 |
>> psycopg2-py24, ...
>>
>> I'm curious as to why the -py25 variant depends on pysqlite2-py25
>> instead of python25.
>>
>> Is there an order of operations that I should be aware of with variants?
>
> That does look weird. I just tried it, and got:
>
> $ fink dumpinfo -fpackage,depends foo-py2{6,5,4}
> package: foo-py26
> depends: python26 | mysql-python-py26 | psycopg2-py26
> package: foo-py25
> depends: python25 | mysql-python-py25 | psycopg2-py25
> package: foo-py24
> depends: pysqlite2-py24 (>=2.4.1-1) | mysql-python-py24 | psycopg2-py24
>
> which seems like what you (rightly) expect. Try 'fink index -f' to
> make sure the dependencies from some previous editing work you were
> doing aren't cached. Do you have another .info on your system that is
> supplying some of these variants?

Dan,

Good call. I forgot to bump the revision, and the changes I was seeing
on the -py26 variant were happening because there is no trac-py26 in
unstable yet.

thanks,

-- 
- Charles Lepple