Perhaps because Qt 5.15.4 is only for enterprise users AFAIK. The best you can use open-source is 5.15.2. A while ago they made LTS support only for enterprise customers.
5.15.4 has prebuilt builds only for commercial users yeah. they still release the source code of it after one year because of kde free qt but no prebuilt
Perhaps because Qt 5.15.4 is only for enterprise users AFAIK. The best you can use open-source is 5.15.2. A while ago they made LTS support only for enterprise customers.