I built Python from source on my server but forgot to install the xz/lzma dev headers first, and now import…

I built Python from source on my server but forgot to install the xz/lzma dev headers first, and now import…: a task in MiMo-V2.6-RL-harbor-code: MiMo-V2.6-RL Code (Harbor) (Harbor dataset). What the agent is asked, how it is graded, what it runs in, and its files.