I have Mercurial and TortoiseHg installed from the AUR.
Recently I installed all the available updates, and now the version of Mercurial that I have running is 6.4, and the version of TortoiseHg is 6.2.2+2-b619f172c9da which is designed for an older version of Mercurial and is not forward-compatible with Mercurial 6.4. So basically TortoiseHg is now broken.
It seems that whoever maintains the TortoiseHg package has not specified the correct dependency constraints. Where should I report this?