sci-geosciences/qgis-2.18.14::gentoo seems to need x11-libs/qwtpolar-1.1.1-r1::gentoo with +Qt4 flag, but QT4 has reached EOL https://htmlpreview.github.io/?https://raw.github.com/qgis/QGIS/master/doc/INSTALL.html indicate it's possible to compile the master branch with qt5. https://htmlpreview.github.io/?https://raw.github.com/qgis/QGIS/release-2_18/doc/INSTALL.html indicate the 2.18 series is meant to be compiled with qt4
What is this bug about, exactly? - Fix your qwtpolar USE flags (+qt4 -qt5) - not a bug. - qgis future bump bug exists - bug 635798
About this : > These are the packages that would be merged, in order: > > Calculating dependencies... done! > > emerge: there are no ebuilds built with USE flags to satisfy ">=x11-libs/qwtpolar-1[qt4(-)]". > !!! One of the following packages is required to complete your request: > - x11-libs/qwtpolar-1.1.1-r1::gentoo (Change USE: +qt4, this change violates use flag constraints defined by x11-libs/qwtpolar-1.1.1-r1: 'exactly-one-of ( qt4 qt5 )') > (dependency required by "sci-geosciences/qgis)
(In reply to Andreas Sturmlechner from comment #1) > - Fix your qwtpolar USE flags (+qt4 -qt5) - not a bug. As I already wrote above ^ that's not a bug, just set it straight (in /etc/portage/package.use).
And see also bug 633650 about why there is no currently good solution for qwtpolar.
