snapcraft list-plugins could present the list more compactly

[Mark Shuttleworth]

As the list of plugins for snapcraft grows it will be much easier to read if it is presented compactly to avoid scrolling. This would be a good example, much like ls:

  $ snapcraft list-plugins
  ant copy kernel nodejs tar-content
  autotools go make python2
  catkin jdk maven python3
  cmake kbuild nil scons

Ideally, use two spaces between each column, and use no more than 120 characters wide.

This is low priority unless there is a nice helper function that we can bring in to do it easily :)

[Impact]

 * The output of snapcraft list-plugins is ugly.
 * This is just a cosmetic change to improve the snapcraft experience.

[Test Case]

 * Run snapcraft list-plugins.
 * Check that the output is nice.

[Regression Potential]

 * Listing the plugins could stop working. We have an integration test that calls the binary and prevents this regression.

[Didier Roche-Tolomelli (didrocks)]

Fix proposed in https://github.com/ubuntu-core/snapcraft/pull/534

[Launchpad Janitor (janitor)]

This bug was fixed in the package snapcraft - 2.10+16.10

---------------
snapcraft (2.10+16.10) yakkety; urgency=medium

  [ Martin Wimpress ]
  * Correct autotools tests to use configflags (#521)

  [ Leo Arias ]
  * Run the integration tests against a local fake server when the user
    password is not in the environment. (#511) (LP: #1585023)
  * Move the login and logout methods to a client. (#518) (LP: #1586504)
  * Improve the config handling. (#519) (LP: #1586511)
  * Fix the one-time password login. (#529) (LP: #1586832)
  * Moved the download to the store client. (#530) (LP: #1586836)
  * Moved the upload to the store client. (#531) (LP: #1586836)
  * Updated the documentation about the icon. (#542) (LP: #1578231)
  * Improve the error message when a part binary is not found. (#541)
    (LP: #1582367)
  * Reenable the ROS demo for autopackage testing. (#520) (LP: #1588098)
  * Add macaroon support to login, upload and download. (#532) (LP: #1586910)
  * Set the no_proxy environment variable to access the local fake servers.
    (#546) (LP: #1588631)

  [ Stephen Stewart ]
  * nodejs plugin: Support configurable node version (#509) (LP: #1586104)

  [ Kyle Fazzari ]
  * Use correct cross-build packages for ppc64le. (#539) (LP: #1570944)

  [ Sergio Schvezov ]
  * Support zip files as source (#523) (LP: #1577062)
  * A nicer error message for incorrect stage-packages (#524) (LP: #1568131)
  * Support the assumes keyword (#525) (LP: #1586429)
  * Improve the template for snapcraft init (#528) (LP: #1575581)
  * Filter out *.snap from sourcedir (#535) (LP: #1575628)
  * Support setting a gopath for a go project from vcs (#538) (LP: #1583426)
  * Add a ticker for snapping (#540) (LP: #1582955)
  * Rename strip to prime (#543) (LP: #1582515)

  [ Didier Roche ]
  * Wrap plugin list output content (#534) (LP: #1587057)
  * Add snapcraft examples to scaffold getting started tour (#513)
    (LP: #1586137)

  [ Joe Talbott ]
  * Add support for parsing the parts wiki (#545) (LP: #1587583)

 -- Sergio Schvezov <email address hidden> Fri, 03 Jun 2016 13:37:58 -0300

[Leo Arias (elopio)]

Tested in an up-to-date xenial:

- update snapcraft to 2.10
- snapcraft list-plugins
- The plugins are shown in columns.

I'm marking this bug as verified.

[Launchpad Janitor (janitor)]

This bug was fixed in the package snapcraft - 2.10.1

---------------
snapcraft (2.10.1) xenial; urgency=medium

  * Backwards compatible clean with strip (#556) (LP: #1590256)

 -- Sergio Schvezov <email address hidden> Wed, 08 Jun 2016 16:32:27 -0300