Am 01.11.19 um 15:39 schrieb Efraim Flashner: >> Please ensure that “guix build qt@4 -nd” returns the same derivation >> before and after the change. Done already before submitting the patch :-) But I repeated it now and this revealed some error. So many thanks for nagging :-) >> >> Perhaps add a comment above saying that ‘qt’ used to refer to the >> monolithic Qt 5.x package? Done. > I didn't apply it locally, I can do it in about 36 hours, but it looks > good. IIRC we have qt4 inheriting from qt5, and qtbase was its own > definition so nothing should change on that side. Correct. I added some more explanation to the commit message to make this more clear. Pushed as  02511196d99ebc5e385e9dc7f733ffbe848e25ca -- Regards Hartmut Goebel | Hartmut Goebel | h.goebel@crazy-compilers.com | | www.crazy-compilers.com | compilers which you thought are impossible |