LC_ALL=c; sudo apt install vulkan*
bash: προειδοποίηση: setlocale: LC_ALL: αδυναμία μεταβολής locale (c): Δεν υπάρχει τέτοιο αρχείο ή κατάλογος
Note, selecting 'vulkan-validationlayers' for glob 'vulkan*'
Note, selecting 'vulkan-tools' for glob 'vulkan*'
Note, selecting 'vulkan-validationlayers-dev' for glob 'vulkan*'
Note, selecting 'vulkan-sdk-headers' for glob 'vulkan*'
Note, selecting 'vulkan-icd' for glob 'vulkan*'
Note, selecting 'vulkan-loader' for glob 'vulkan*'
Note, selecting 'vulkan-memory-allocator-doc' for glob 'vulkan*'
Note, selecting 'vulkan-headers' for glob 'vulkan*'
Note, selecting 'vulkan-sdk-runtime' for glob 'vulkan*'
Note, selecting 'vulkan-utility-libraries-dev' for glob 'vulkan*'
Note, selecting 'mesa-vulkan-drivers' instead of 'vulkan-icd'
vulkan-tools is already the newest version (1.4.304.0+dfsg1-1).
mesa-vulkan-drivers is already the newest version (25.0.1-2).
vulkan-memory-allocator-doc is already the newest version (3.2.1+dfsg-1).
vulkan-utility-libraries-dev is already the newest version (1.4.304.0-1).
vulkan-validationlayers is already the newest version (1.4.304.0-1).
Summary:
Upgrading: 0, Installing: 0, Removing: 0, Not Upgrading: 0

You have to clone the repo along with the submodules https://github.com/doitsujin/dxvk#build-instructions

You can run git submodule update --init --recursive to fix it.

solved! you must add it to your guide this!