Am 08.07.2014 13:53, schrieb Sylvain Joyeux:
I don't like this, as in most situations people *want* the GUI. The nogui
case is a special case. all packages including the GUI is the common case.
Note that gui/vizkit was already part of rock.toolchain before the
migration.
For me the gui should be also not a part of the toolchain. The toolchain should contain tools for building and running a system. The gui is used to visualize and debugging.

Moreover, rock.simulation is not part of rock.core, and should IMO not be.
That was just an example on how metapackages should depend on each other.

Finally: in principle, one should not *have* to use rock.core on a
"finalized" system (such as a robot) as he can enumerate the packages he
needs instead of selecting rock.core. Since we are talking about having
e.g. a robot, it would IMO be a better approach as it ensures that, on the
headless system, there are only packages that are useful.
I agree here. If one selects rock.core, all drivers (even unused) will be installed.

But there should be one metapackage (rock.minimal?) that only contains the packages from the infrastructure that every installation really needs, for example orogen, rtt, base-types, roby, syskit. Without them you cannot build and run any rock installation. All specific packages like drivers, image_processing and gui should be in their own optional metapackages.

By just using the minimal packageset I don't need to select all required packages manually and you are not forced to install optional packages.

Regards,
Christian


Sylvain


On Tue, Jul 8, 2014 at 1:27 PM, Christian Rauch <[email protected]>
wrote:

Hi,

I am hitting the same problem about the gui dependency in rock.core now
and would like to reopen that discussion again:

Am 04.07.2014 09:32, schrieb Sylvain Joyeux:

  On Fri, Jul 4, 2014 at 9:29 AM, Matthias Goldhoorn <
[email protected]> wrote:

    So what's the best way to solve this?

  Create a rock.core.nogui metapackage. Make it a duplicate of the
rock.core
metapackage, but without the GUI packages.

  Wouldn't it be better to have it the other way around?
There should be one metapackage containing only the necessary packages to
have the robot running and have additional metapackages for gui and
simulation.

E.g. a package rock.core itself should not depend on gui packages, but
should contain the toolchain and drivers. Two additional metapackages
rock.gui and rock.simulation should depend on rock.core and add their
additional packages.

Suggestions?

Regards,
Christian


  Sylvain



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  Christian Rauch
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_______________________________________________
Rock-dev mailing list
[email protected]
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--
 Christian Rauch
 Space Robotics

 Universität Bremen
 FB 3 - Mathematik und Informatik
 AG Robotik
 Robert-Hooke-Straße 1
 28359 Bremen, Germany

 Zentrale: +49 421 178 45-6611

 Besuchsadresse der Nebengeschäftstelle:
 Robert-Hooke-Straße 5
 28359 Bremen, Germany

 Tel:     +49 421 178 45-6619
 Empfang: +49 421 178 45-6600
 Fax:     +49 421 178 45-4150
 E-Mail:  [email protected]

 Weitere Informationen: http://www.informatik.uni-bremen.de/robotik


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