Как выглядит сообщение об ошибке

gnome-sharp-2.0
/var/tmp/portage/dev-util/monodevelop-6.0.0.4761/work/monodevelop-6.0/config.log
# rm -rf /var/tmp/portage/dev-util/monodevelop-* && USE="gnome" emerge -v =monodevelop-6.0.0.4761
!!! Repository 'dotnet' has sync-uri attribute, but is missing sync-type attribute
 * WARNING: The FEATURES variable contains one or more values that
 * should be disabled under normal circumstances: keepwork

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

Calculating dependencies... done!
[ebuild     U ~] dev-util/monodevelop-6.0.0.4761::dotnet [5.9.5.9-r1::gentoo] USE="git gnome* subversion -debug% -developer% -doc% -qtcurve" 0 KiB

Total: 1 package (1 upgrade), Size of downloads: 0 KiB

!!! The following installed packages are masked:
- dev-java/oracle-jdk-bin-1.8.0.77::gentoo (masked by: Oracle-BCLA-JavaSE license(s))
A copy of the 'Oracle-BCLA-JavaSE' license is located at '/usr/portage/licenses/Oracle-BCLA-JavaSE'.

- www-client/google-chrome-51.0.2704.106::gentoo (masked by: google-chrome license(s))
A copy of the 'google-chrome' license is located at '/usr/portage/licenses/google-chrome'.

- app-emulation/virtualbox-bin-5.0.20.106931::gentoo (masked by: PUEL license(s))
A copy of the 'PUEL' license is located at '/usr/portage/licenses/PUEL'.

- dev-lang/perl-5.20.2::gentoo (masked by: package.mask)
For more information, see the MASKED PACKAGES section in the emerge
man page or refer to the Gentoo Handbook.



>>> Verifying ebuild manifests

>>> Emerging (1 of 1) dev-util/monodevelop-6.0.0.4761::dotnet
 * monodevelop-6.0.0.4761.tar.bz2 SHA256 SHA512 WHIRLPOOL size ;-) ...                                                                    [ ok ]
 * roslyn-16e117c2400d0ab930e7d89512f9894a169a0e6e.zip SHA256 SHA512 WHIRLPOOL size ;-) ...                                               [ ok ]
 * NUnit-2.5.10.11092.zip SHA256 SHA512 WHIRLPOOL size ;-) ...                                                                            [ ok ]
 * Ebuild doesn't contain USE_DOTNET=
 *  -- USING .NET 4.0 FRAMEWORK -- 
>>> Unpacking source...
>>> Unpacking NUnit-2.5.10.11092.zip to /var/tmp/portage/dev-util/monodevelop-6.0.0.4761/temp
>>> Unpacking monodevelop-6.0.0.4761.tar.bz2 to /var/tmp/portage/dev-util/monodevelop-6.0.0.4761/work
>>> Unpacking roslyn-16e117c2400d0ab930e7d89512f9894a169a0e6e.zip to /var/tmp/portage/dev-util/monodevelop-6.0.0.4761/work/monodevelop-6.0/external
>>> Source unpacked in /var/tmp/portage/dev-util/monodevelop-6.0.0.4761/work
>>> Preparing source in /var/tmp/portage/dev-util/monodevelop-6.0.0.4761/work/monodevelop-6.0 ...
 * Applying 6.0-aspnet-template-references-fix.patch ...                                                                                  [ ok ]
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/dev-util/monodevelop-6.0.0.4761/work/monodevelop-6.0 ...
./configure --prefix=/usr --build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu --mandir=/usr/share/man --infodir=/usr/share/info --datadir=/usr/share --sysconfdir=/etc --localstatedir=/var/lib --disable-silent-rules --libdir=/usr/lib64 --disable-update-mimedb --disable-update-desktopdb --enable-monoextensions --enable-gnomeplatform --enable-subversion --enable-git
checking for a BSD-compatible install... /usr/lib/portage/python3.4/ebuild-helpers/xattr/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking whether UID '250' is supported by ustar format... yes
checking whether GID '250' is supported by ustar format... yes
checking how to create a ustar tar archive... gnutar
checking whether to enable maintainer-specific portions of Makefiles... no
checking for mono... /usr/bin/mono
checking for mcs... /usr/bin/dmcs
checking for pkg-config... /usr/bin/pkg-config
checking for msgfmt... /usr/bin/msgfmt
checking for msgmerge... /usr/bin/msgmerge
checking for x86_64-pc-linux-gnu-pkg-config... (cached) /usr/bin/pkg-config
checking pkg-config is at least version 0.9.0... yes
checking for UNMANAGED_DEPENDENCIES_MONO... yes
checking for mono... /usr/bin/mono
checking for dmcs... /usr/bin/dmcs
checking for GLIB_SHARP... yes
checking for GTK_SHARP... yes
checking for GLADE_SHARP... yes
checking for MONODOC... yes
checking for GNOME_SHARP... no
checking for GNOME_VFS_SHARP... yes
checking for GCONF_SHARP... yes
configure: error: Cannot enable GNOME platform without gnome-sharp-2.0

!!! Please attach the following file when seeking support:
!!! /var/tmp/portage/dev-util/monodevelop-6.0.0.4761/work/monodevelop-6.0/config.log
 * ERROR: dev-util/monodevelop-6.0.0.4761::dotnet failed (configure phase):
 *   econf failed
 * 
 * Call stack:
 *               ebuild.sh, line  115:  Called src_configure
 *             environment, line 2623:  Called econf '--disable-update-mimedb' '--disable-update-desktopdb' '--enable-monoextensions' '--enable-gnomeplatform' '--enable-subversion' '--enable-git'
 *        phase-helpers.sh, line  662:  Called __helpers_die 'econf failed'
 *   isolated-functions.sh, line  117:  Called die
 * The specific snippet of code:
 *   		die "$@"
 * 
 * If you need support, post the output of `emerge --info '=dev-util/monodevelop-6.0.0.4761::dotnet'`,
 * the complete build log and the output of `emerge -pqv '=dev-util/monodevelop-6.0.0.4761::dotnet'`.
 * The complete build log is located at '/var/tmp/portage/dev-util/monodevelop-6.0.0.4761/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/dev-util/monodevelop-6.0.0.4761/temp/environment'.
 * Working directory: '/var/tmp/portage/dev-util/monodevelop-6.0.0.4761/work/monodevelop-6.0'
 * S: '/var/tmp/portage/dev-util/monodevelop-6.0.0.4761/work/monodevelop-6.0'

>>> Failed to emerge dev-util/monodevelop-6.0.0.4761, Log file:

>>>  '/var/tmp/portage/dev-util/monodevelop-6.0.0.4761/temp/build.log'

 * Messages for package dev-util/monodevelop-6.0.0.4761:

 * Ebuild doesn't contain USE_DOTNET=
 * ERROR: dev-util/monodevelop-6.0.0.4761::dotnet failed (configure phase):
 *   econf failed
 * 
 * Call stack:
 *               ebuild.sh, line  115:  Called src_configure
 *             environment, line 2623:  Called econf '--disable-update-mimedb' '--disable-update-desktopdb' '--enable-monoextensions' '--enable-gnomeplatform' '--enable-subversion' '--enable-git'
 *        phase-helpers.sh, line  662:  Called __helpers_die 'econf failed'
 *   isolated-functions.sh, line  117:  Called die
 * The specific snippet of code:
 *   		die "$@"
 * 
 * If you need support, post the output of `emerge --info '=dev-util/monodevelop-6.0.0.4761::dotnet'`,
 * the complete build log and the output of `emerge -pqv '=dev-util/monodevelop-6.0.0.4761::dotnet'`.
 * The complete build log is located at '/var/tmp/portage/dev-util/monodevelop-6.0.0.4761/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/dev-util/monodevelop-6.0.0.4761/temp/environment'.
 * Working directory: '/var/tmp/portage/dev-util/monodevelop-6.0.0.4761/work/monodevelop-6.0'
 * S: '/var/tmp/portage/dev-util/monodevelop-6.0.0.4761/work/monodevelop-6.0'