ikiwiki: mark build broken

The test suite fails after we updated to Imagemagick from version 6.9.7-6 to
6.9.8-4. https://ikiwiki.info/bugs/imagemagick_6.9.8_test_suite_failure/ has
more details.

+1 -1
+1 -1
pkgs/applications/misc/ikiwiki/default.nix
··· 84 description = "Wiki compiler, storing pages and history in a RCS"; 85 homepage = http://ikiwiki.info/; 86 license = stdenv.lib.licenses.gpl2Plus; 87 - 88 platforms = stdenv.lib.platforms.linux; 89 maintainers = [ stdenv.lib.maintainers.peti ]; 90 }; 91 }
··· 84 description = "Wiki compiler, storing pages and history in a RCS"; 85 homepage = http://ikiwiki.info/; 86 license = stdenv.lib.licenses.gpl2Plus; 87 platforms = stdenv.lib.platforms.linux; 88 maintainers = [ stdenv.lib.maintainers.peti ]; 89 + broken = true; # https://ikiwiki.info/bugs/imagemagick_6.9.8_test_suite_failure/ 90 }; 91 }