@perik I inherited a project like this, where Quasar was added to a vuejs project. At some point I needed to install a Quasar extension, which wouldn’t install from the vuejs directory.
Eventually muscled up, created a new quasar project and started porting over the files from the vuejs directory. Was easier than I thought and wish I had done so sooner.
Basically after I ran quasar create I copied over all files from src and was careful about not to overwrite any of the Quasar generated files. Think I had to do some work on boot, but that was it for the src directory. Next I scanned package.json in the vuejs project and did a “yarn add” on the Quasar project which saved any modules that were missing.
Don’t recall what I did with the routes, but think I recreated them rather than copy over the vuejs routes.