thanks very much Martin and François for your answers,

I start to understand a little bit more the various options.
But If understand correctlly, it means that under arch linux, If I want to
use scikit image, I need a virtual environment ...

thanks again,


On Sun, Apr 15, 2018 at 6:47 AM, François Boulogne <>

> For some weird reasons, you have packages content installed but the
> package manager didn't mark the package as installed. That's not normal
> (perhaps because you tried with pip?).
> Anyway, force the install by passing the option "--force" to yaourt.
> As a side comment, I usually don't recommend to install libraries with
> pip on the system as the distribution packages might conflict with them
> and also for the ease of maintenance. Instead, I prefer to use
> virtualenvs (for me, with pew).
> Best,
> --
> François Boulogne.
> GPG: 32D5F22F
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