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Bug 534274 - "(masked by: )" related to [flag=] dependency
Summary: "(masked by: )" related to [flag=] dependency
Status: UNCONFIRMED
Alias: None
Product: Portage Development
Classification: Unclassified
Component: Core - Dependencies (show other bugs)
Hardware: All All
: Normal normal (vote)
Assignee: Portage team
URL:
Whiteboard:
Keywords:
Depends on:
Blocks: 155723 autounmask
  Show dependency tree
 
Reported: 2015-01-02 06:07 UTC by Arfrever Frehtes Taifersar Arahesis
Modified: 2016-01-22 18:13 UTC (History)
2 users (show)

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

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Description Arfrever Frehtes Taifersar Arahesis 2015-01-02 06:07:57 UTC 
I use Portage trunk (605846a0b98869c9d1cbf19660969fb24e5c680b).

# cat app-misc/A/A-0.ebuild
EAPI="5"
SLOT="0"
KEYWORDS="*"
IUSE="+flag"
# cat app-misc/B/B-0.ebuild
EAPI="5"
SLOT="0"
KEYWORDS="*"
IUSE="+flag"
RDEPEND="app-misc/A[flag=]"
# cat app-misc/C/C-0.ebuild
EAPI="5"
SLOT="0"
KEYWORDS="*"
IUSE="flag"
RDEPEND="app-misc/A[flag=] app-misc/B[flag=]"
# cat app-misc/D/D-0.ebuild
EAPI="5"
SLOT="0"
KEYWORDS="*"
RDEPEND="app-misc/B app-misc/C"
# emerge -1 app-misc/B
...
# emerge -ptv app-misc/D

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

Calculating dependencies... done!
[ebuild  N     ] app-misc/D-0::local  0 KiB
[ebuild  N     ]  app-misc/C-0::local  USE="-flag" 0 KiB
[ebuild   R    ]   app-misc/B-0::local  USE="-flag*" 0 KiB
[ebuild   R    ]    app-misc/A-0::local  USE="-flag*" 0 KiB

Total: 4 packages (2 new, 2 reinstalls), Size of downloads: 0 KiB

The following USE changes are necessary to proceed:
 (see "package.use" in the portage(5) man page for more details)
# required by app-misc/C-0::local
# required by app-misc/D-0::local
# required by app-misc/D (argument)
>=app-misc/B-0 -flag
# required by app-misc/C-0::local
# required by app-misc/D-0::local
# required by app-misc/D (argument)
>=app-misc/A-0 -flag

!!! All ebuilds that could satisfy "app-misc/A[flag=]" have been masked.
!!! One of the following masked packages is required to complete your request:
- app-misc/A-0::local (masked by: )

(dependency required by "app-misc/B-0::local" [ebuild])
(dependency required by "app-misc/C-0::local" [ebuild])
(dependency required by "app-misc/D-0::local" [ebuild])
(dependency required by "app-misc/D" [argument])
For more information, see the MASKED PACKAGES section in the emerge
man page or refer to the Gentoo Handbook.
Comment 1 Arfrever Frehtes Taifersar Arahesis 2015-01-02 07:06:01 UTC 
These problems are absent with --autounmask=n.

Another situation: Slot conflict with incorrect suggestion about changing of USE flags (especially incorrect for "another_flag" USE flag):

# cat app-misc/E/E-0.ebuild
EAPI="5"
SLOT="0"
KEYWORDS="*"
IUSE="+flag another_flag"
# cat app-misc/F/F-0.ebuild
EAPI="5"
SLOT="0"
KEYWORDS="*"
IUSE="+flag another_flag"
RDEPEND="app-misc/E[flag=,another_flag=]"
# cat app-misc/G/G-0.ebuild
EAPI="5"
SLOT="0"
KEYWORDS="*"
IUSE="+flag another_flag"
RDEPEND="app-misc/E[flag=,another_flag=] app-misc/F[flag=,another_flag=]"
# cat app-misc/H/H-0.ebuild
EAPI="5"
SLOT="0"
KEYWORDS="*"
IUSE="flag another_flag"
RDEPEND="app-misc/E[flag=,another_flag=] app-misc/F[flag=,another_flag=]"
# cat app-misc/I/I-0.ebuild
EAPI="5"
SLOT="0"
KEYWORDS="*"
RDEPEND="app-misc/G app-misc/H"
# emerge -1 app-misc/F
...
# emerge -ptv app-misc/I

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

Calculating dependencies... done!
[ebuild  N     ] app-misc/I-0::local  0 KiB
[ebuild  N     ]  app-misc/H-0::local  USE="-another_flag -flag" 0 KiB
[ebuild   R    ]   app-misc/F-0::local  USE="-another_flag -flag*" 0 KiB
[ebuild  N     ]  app-misc/G-0::local  USE="flag -another_flag" 0 KiB
[nomerge       ] app-misc/F-0::local  USE="-another_flag -flag*" 
[ebuild   R    ]  app-misc/E-0::local  USE="-another_flag -flag*" 0 KiB

Total: 5 packages (3 new, 2 reinstalls), Size of downloads: 0 KiB

!!! Multiple package instances within a single package slot have been pulled
!!! into the dependency graph, resulting in a slot conflict:

app-misc/F:0

  (app-misc/F-0:0/0::local, installed) pulled in by
    app-misc/F[flag=,another_flag=] required by (app-misc/G-0:0/0::local, ebuild scheduled for merge)
               ^^^^^                                                                                   

  (app-misc/F-0:0/0::local, ebuild scheduled for merge) pulled in by
    app-misc/F[flag=,another_flag=] required by (app-misc/H-0:0/0::local, ebuild scheduled for merge)
               ^^^^^                                                                                   

app-misc/E:0

  (app-misc/E-0:0/0::local, installed) pulled in by
    app-misc/E[flag=,another_flag=] required by (app-misc/G-0:0/0::local, ebuild scheduled for merge)
               ^^^^^                                                                                   
    app-misc/E[flag=,another_flag=] required by (app-misc/F-0:0/0::local, installed)
               ^^^^^                                                                  

  (app-misc/E-0:0/0::local, ebuild scheduled for merge) pulled in by
    app-misc/E[flag=,another_flag=] required by (app-misc/H-0:0/0::local, ebuild scheduled for merge)
               ^^^^^                                                                                   
    app-misc/E[flag=,another_flag=] required by (app-misc/F-0:0/0::local, ebuild scheduled for merge)
               ^^^^^                                                                                   


It might be possible to solve these slot collisions
by applying one of the following solutions:
   - app-misc/F-0 (Change USE: +another_flag +flag)
   - app-misc/G-0 (Change USE: +another_flag)
   - app-misc/E-0 (Change USE: +another_flag +flag)
   - app-misc/F-0 (Change USE: +another_flag)
   - app-misc/H-0 (Change USE: +another_flag +flag)


The following USE changes are necessary to proceed:
 (see "package.use" in the portage(5) man page for more details)
# required by app-misc/H-0::local
# required by app-misc/I-0::local
# required by app-misc/I (argument)
>=app-misc/F-0 -flag
# required by app-misc/F-0::local
# required by app-misc/H-0::local
# required by app-misc/I-0::local
# required by app-misc/I (argument)
>=app-misc/E-0 -flag

!!! All ebuilds that could satisfy "app-misc/E[flag=,another_flag=]" have been masked.
!!! One of the following masked packages is required to complete your request:
- app-misc/E-0::local (masked by: )

(dependency required by "app-misc/F-0::local" [ebuild])
(dependency required by "app-misc/H-0::local" [ebuild])
(dependency required by "app-misc/I-0::local" [ebuild])
(dependency required by "app-misc/I" [argument])
For more information, see the MASKED PACKAGES section in the emerge
man page or refer to the Gentoo Handbook.