Hi,
I have just updated context standalone and I get the following errors :

When you want to use context, you need to initialize the tree by typing:

  . /home/viserion/context/tex/setuptex

in your shell or add
  "/home/viserion/context/tex/texmf-linux-64/bin"
to PATH variable if you want to set it permanently.
This can usually be done in .bashrc, .bash_profile
(or whatever file is used to initialize your shell).

[viserion@archlinux context]$ mtxrun --generate
bash: /home/viserion/bin/mtxrun: Aucun fichier ou dossier de ce type
[viserion@archlinux context]$ context --make
/home/viserion/texlive/2018/bin/x86_64-linux/context: ligne 2:
/home/viserion/bin/mtxrun: Aucun fichier ou dossier de ce type
[viserion@archlinux context]$

Thanks
Fabrice