Hello, if you have transferred the installation from a MAC X86, you must first reinstall brew by removing the folder from /usr/local/opt and creating one in /opt/homebrew. You can find instructions on the homebrew website. Then, installing therion via brew also works in --head mode. enrico On Thu, Oct 30, 2025 at 9:00 AM Anže Abram <anze.abram@gmail.com> wrote:
Greetings.
I've been trying to reinstall Therion on a new M-series macbook on the newest OS (Tahoe) but have run into several 'dead ends'.
(1) First I tried the homebrew method, but I ran into the same issue as several others. The whole homebrew route seems to be broken currently.
https://github.com/ladislavb/homebrew-therion/issues/15
(2) I tried to compile it from source, but it gets stuck while trying to compile Loch with the following error:
In file included from lxSetup.cxx:39:
*./lxData.h:35:10: **fatal error: **'vtkPolyData.h' file not found*
35 | #include <vtkPolyData.h>
| * ^~~~~~~~~~~~~~~*
1 error generated.
make[1]: *** [lxSetup.o] Error 1 make: *** [loch/loch] Error 2
Does anyone know of a solution, how to tackle any of these problems by chance? Thanks in advance, Anze
*Anže Abram* Ulica bratov Učakar 84, 1000 Ljubljana SI - Slovenia
*M* +386 41 480 906 *@* anze.abram@gmail.com
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-- Enrico Fratnik e. enrico.fratnik@gmail.com PEC enrico@pec.fratnik.it skype: fratnike t. +39.335.6573879 Questo messaggio e riservato; Qualsiasi pubblicazione, utilizzo o diffusione, anche parziale di questo messaggio, deve essere preventivamente autorizzata. Nel caso in cui non foste destinatari del presente messaggio,vogliate cortesemente avvertire immediatamente il mittente. Ce message est confidentiel; Toute publication, utilisation ou diffusion, meme partielle, doit etre autorisee prealablement. Si vous n' etes pas destinataire de ce message, merci d'en avertir immediatement l'expediteur. This message is confidential; Any unauthorised disclosure, use or dissemination, either whole or partial, is prohibited. If you are not the intended recipient of the message, please notify the sender immediately