magnet:?xt=urn:btih:438daf388132c2810ef7d38ba36e56534f20a098&xt=urn:md5:d4a83d12e6e07e97b02a07fb62615c1e&xl=2858187853&dn=qt-opensource-mac-x64-5.12.8.dmg&as=https://download.qt.io/archive/qt/5.12/5.12.8/qt-opensource-mac-x64-5.12.8.dmg&tr=http://bt.qt-project.org:6969/announce