$ guix environment guix
$ git clean -xdf
$ git checkout -- po
$ ./bootstrap 
$ ./configure --localstatedir=/var --prefix=''
$ make

$ git status
modified:   po/guix/cs.po
modified:   po/guix/da.po
modified:   po/guix/de.po
modified:   po/guix/eo.po
modified:   po/guix/fr.po
modified:   po/guix/hu.po
modified:   po/guix/pl.po
modified:   po/guix/pt_BR.po
modified:   po/guix/sr.po
modified:   po/guix/vi.po
modified:   po/guix/zh_CN.po
modified:   po/packages/da.po
modified:   po/packages/de.po
modified:   po/packages/eo.po
modified:   po/packages/fr.po
modified:   po/packages/hu.po
modified:   po/packages/pl.po
modified:   po/packages/pt_BR.po
modified:   po/packages/sr.po
modified:   po/packages/vi.po