* gnu/packages/chez.scm (chez-configure, chez-make-flags): Use G-expressions. (chez-srfi)[arguments]: Use G-expressions, 'chez-configure', and 'chez-make-flags'. (chez-web, chez-sockets)[native-inputs]: Remove labels. [arguments]: Use G-expressions. (chez-matchable, chez-irregex, chez-fmt, chez-mit) (chez-scmutils)[arguments]: Use G-expressions. Signed-off-by: Liliana Marie Prikler <liliana.prikler@gmail.com>