Looks like it's caused by this commit https://github.com/Valloric/YouCompleteMe/commit/eda368eb350737f67283485a68cfee8f9f03adb9 The build log is attached
Created attachment 377054 [details] build log
I get this instead: >>> Source unpacked in /home/jer/portage/app-vim/youcompleteme-99999999/work >>> Preparing source in /home/jer/portage/app-vim/youcompleteme-99999999/work/youcompleteme-99999999 ... /bin/sed: -e expression #1, char 19: unterminated address regex * ERROR: app-vim/youcompleteme-99999999::gentoo failed (prepare phase): * (no error message)
I wrote a simple patch for the ebuild so that it compiles and merges. Tim, commit it if you like. I also want to note, that youcompleteme installes tons of bundled python modules: pythonfutures requests requests-futures retries argparse bottle frozendict jedi OmniSharpServer waitress Some of them are not even packaged in Gentoo. I will try to look into this issue soon, looks like it's possible to unbundle it.
Created attachment 378374 [details, diff] Patch for 99999999 ebuild
Ok, I've unbundled boost and gmock, patches are accepted upstream. Modified ebuild is commited to the tree, please check and report.