Hmm ... It's impossible ;-) This RPM doesn't exist on any FTP server

Provides :
gjs-devel
gjs-devel(x86-32)
pkgconfig(gjs-1.0)
pkgconfig(gjs-internals-1.0)

Requires :

/usr/bin/pkg-config
gjs = 1.36.1-2.el7
libgjs.so.0
pkgconfig
pkgconfig(gjs-1.0)
pkgconfig(gobject-2.0)
pkgconfig(gobject-introspection-1.0)
pkgconfig(mozjs185)
rpmlib(CompressedFileNames) <= 3.0.4-1
rpmlib(FileDigests) <= 4.6.0-1
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
rpmlib(PayloadIsXz) <= 5.2-1

Content of RPM :
/usr/include/gjs-1.0
/usr/include/gjs-1.0/gi
/usr/include/gjs-1.0/gi/arg.h
/usr/include/gjs-1.0/gi/boxed.h
/usr/include/gjs-1.0/gi/closure.h
/usr/include/gjs-1.0/gi/enumeration.h
/usr/include/gjs-1.0/gi/foreign.h
/usr/include/gjs-1.0/gi/function.h
/usr/include/gjs-1.0/gi/gerror.h
/usr/include/gjs-1.0/gi/gtype.h
/usr/include/gjs-1.0/gi/interface.h
/usr/include/gjs-1.0/gi/keep-alive.h
/usr/include/gjs-1.0/gi/ns.h
/usr/include/gjs-1.0/gi/object.h
/usr/include/gjs-1.0/gi/param.h
/usr/include/gjs-1.0/gi/repo.h
/usr/include/gjs-1.0/gi/union.h
/usr/include/gjs-1.0/gi/value.h
/usr/include/gjs-1.0/gjs
/usr/include/gjs-1.0/gjs/byteArray.h
/usr/include/gjs-1.0/gjs/compat.h
/usr/include/gjs-1.0/gjs/context.h
/usr/include/gjs-1.0/gjs/gjs-module.h
/usr/include/gjs-1.0/gjs/gjs.h
/usr/include/gjs-1.0/gjs/importer.h
/usr/include/gjs-1.0/gjs/jsapi-util.h
/usr/include/gjs-1.0/gjs/mem.h
/usr/include/gjs-1.0/gjs/native.h
/usr/include/gjs-1.0/gjs/type-module.h
/usr/lib/libgjs.so
There is 8 files more in these RPM.