Just an other argument for the need to detect the Wine environment out of NSIS: Currently there are some additional drivers/setups installed within my NSIS setup that are not necessary. And one of these sub-setups fails to be installed under wine, a subprocess of it crashes in background and causes the setup itself to issue an error message. So I think there are two good reasons for giving a possibility to detect the Wine environment ouf of NSIS: - installing of drivers that are useless under Wine can be avoided - installing of not working and not required data/setups can be avoided Possibly a specific environment variable that tells about Wine is a solution?