Hello,
When building "emacs-org-contrib" on core-updates-frozen, the following message is printed: --8<---------------cut here---------------start------------->8--- tar: Exiting with failure status due to previous errors error: in phase 'unpack': uncaught exception: %exception #<&invoke-error program: "tar" arguments: ("xvf" "/gnu/store/r3v4gkqqbxp2w739a0llvk9nrda9xn89-org-plus-contrib-20210809.tar") exit-status: 2 term-signal: #f stop-signal: #f> phase `unpack' failed after 0.0 seconds command "tar" "xvf" "/gnu/store/r3v4gkqqbxp2w739a0llvk9nrda9xn89-org-plus-contrib-20210809.tar" failed with status 2 note: keeping build directory `/tmp/guix-build-emacs-org-contrib-20210809.drv-6' builder for `/gnu/store/52jcx6rwnf0wrkrpcwkyz766fzg6asjy-emacs-org-contrib-20210809.drv' failed with exit code 1 build of /gnu/store/52jcx6rwnf0wrkrpcwkyz766fzg6asjy-emacs-org-contrib-20210809.drv failed View build log at '/var/log/guix/drvs/52/jcx6rwnf0wrkrpcwkyz766fzg6asjy-emacs-org-contrib-20210809.drv.bz2'. guix build: error: build of `/gnu/store/52jcx6rwnf0wrkrpcwkyz766fzg6asjy-emacs-org-contrib-20210809.drv' failed --8<---------------cut here---------------end--------------->8--- That's because "/gnu/store/r3v4gkqqbxp2w739a0llvk9nrda9xn89-org-plus-contrib-20210809.tar" is empty. I believe this is a consequence of: cfcead2e515c0dae02127e5a76496463898be6b6, and in particular this section: --8<---------------cut here---------------start------------->8--- ;; If SOURCE is a directory (such as a checkout), return a ;; directory. Otherwise create a tarball. (cond ((file-is-directory? #+source) (copy-recursively directory #$output #:log (%make-void-port "w"))) ((not #+comp) (copy-file file #$output)) <---------- We should call repack instead here for raw tarballs? (else (repack directory #$output))))))) --8<---------------cut here---------------end--------------->8--- Maxim, could you please have a look? Thanks, Mathieu