* gnu/packages/gprolog.scm (gprolog): Add 'supported-systems' field. * gnu/packages/qemu.scm (qemu-headless): Likewise. * gnu/packages/qt.scm (qt): Likewise. * gnu/packages/scheme.scm (racket): Likewise.
* gnu/packages/gprolog.scm (gprolog): Add 'supported-systems' field. * gnu/packages/qemu.scm (qemu-headless): Likewise. * gnu/packages/qt.scm (qt): Likewise. * gnu/packages/scheme.scm (racket): Likewise.