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Bug 374331 - sys-apps/portage: autounmask option should suggest a package without version for USE changes
Summary: sys-apps/portage: autounmask option should suggest a package without version ...
Status: RESOLVED DUPLICATE of bug 379333
Alias: None
Product: Portage Development
Classification: Unclassified
Component: Core - Interface (emerge) (show other bugs)
Hardware: All Linux
: Normal enhancement (vote)
Assignee: Portage team
Depends on:
Blocks: autounmask
  Show dependency tree
Reported: 2011-07-07 11:27 UTC by Pacho Ramos
Modified: 2011-09-20 17:41 UTC (History)
0 users

See Also:
Package list:
Runtime testing required: ---


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Description Pacho Ramos gentoo-dev 2011-07-07 11:27:35 UTC
I saw today emerge autounmask behavior with USE changes:

# USE="doc" emerge -1av --digest gtkmm:2.4

 * The --digest option can prevent corruption from being noticed. The
 * `repoman manifest` command is the preferred way to generate manifests
 * and it is capable of doing an entire repository or category at once.

These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild   R    ] media-libs/gd-2.0.35-r1  USE="fontconfig* jpeg png truetype xpm" 0 kB
[ebuild  N     ] media-gfx/graphviz-2.26.3-r2  USE="cairo doc gtk java nls perl python -examples -lasi -ruby -static-libs -tcl" 0 kB
[ebuild  N     ] app-doc/doxygen-1.7.3  USE="doc latex qt4 -debug -nodot -tcl" 0 kB
[ebuild     U  ] dev-cpp/gtkmm-2.24.1 [2.24.0] USE="doc* test -examples" 0 kB

Total: 4 packages (1 upgrade, 2 new, 1 reinstall), Size of downloads: 0 kB

The following USE changes are necessary to proceed:
#required by media-gfx/graphviz-2.26.3-r2, required by app-doc/doxygen-1.7.3[-nodot], required by dev-cpp/gtkmm-2.24.1[doc], required by gtkmm:2.4 (argument)
=media-libs/gd-2.0.35-r1 fontconfig

NOTE: This --autounmask behavior can be disabled by setting
      EMERGE_DEFAULT_OPTS="--autounmask=n" in make.conf.

Use --autounmask-write to write changes to config files (honoring CONFIG_PROTECT).

From my point of view, USE changes are usually needed for newer versions (at least with the same SLOT) and, then, there is no much sense on adding:
=media-libs/gd-2.0.35-r1 fontconfig

I would simply add "media-libs/gd fontconfig" to prevent to have to add a ton of lines to package.use with any new "gd" version.

Thanks a lot

Reproducible: Always
Comment 1 Zac Medico gentoo-dev 2011-07-07 11:49:36 UTC
When choosing these atoms, it's not necessarily safe to use really broad atoms. For this particular case it seems like we can optimize it more though. The '=' operator might be appropriate if we were making a package.unmask change, but it's too specific for a package.use change.

One problem with the current code is that it uses '=' if the selected package is not the latest version available in its slot, and this is almost never true for stable packages.
Comment 2 Sebastian Luther (few) 2011-09-20 17:41:04 UTC

*** This bug has been marked as a duplicate of bug 379333 ***