Commit 9cfc93be30c516fd6fa32915c61c06e03f23a011 changed the default
value of #:bootstrap-scripts to #f, which is invalid (it must be a list
of strings). That default value was used by build systems that inherit
phases from 'gnu-build-system', such as 'qt-build-system', which would
lead to wrong-type-arg errors in the 'boostrap' phase.
Reported by Raghav Gururajan <rg@raghavgururajan.name>.
* guix/build/gnu-build-system.scm (%bootstrap-scripts): New variable.
(bootstrap): Change #:bootstrap-scripts to default to it.
* guix/build-system/gnu.scm (%bootstrap-scripts): Change value.
(gnu-build): #:bootstrap-scripts defaults to %bootstrap-scripts. Remove
call to 'sexp->gexp'.
(gnu-cross-build): Likewise.
4863c4304e