Hi Wang, Seems that something happened in your environment. In the build-pkgs.log file see: 08:47:59 build-srpms-parallel --std 08:47:59 Error: MY_REPO changed since last build 08:47:59 old path: /root/starlingx/workspace/localdisk/designer/root/starlingx/cgcs-root 08:47:59 new path: //localdisk/designer/root/starlingx/cgcs-root The MY_REPO env variable is automatically set every time you open a shell (or a docker exec). It should point to: /localdisk/designer/<youruser>/<yourproject>/cgcs-root where <youruser> and <yourproject> are defined in the localrc file you created at the beginning of the setup. You can try to: - Review the content of the localrc file. - Kill the container and start it again and check the value of MY_REPO. The additional steps you mentioned failed because this one wasn't able to complete. If you need more help, please let us know. -Erich From: wang guo <gwanmax@gmail.com> Date: Thursday, January 3, 2019 at 5:02 AM To: "starlingx-discuss@lists.starlingx.io" <starlingx-discuss@lists.starlingx.io> Subject: [Starlingx-discuss] build-pkgs failed when building iso Hi everyone,      I'm trying to build starlingx iso by following the guide step by step and got some error messages. When execute command "build-pkgs",  the message "build-srpm-parallel --std failed with rc=1" was printed. When execute command "generate-cgcs-tis-repo",  the message "find: ‘//localdisk/loadbuild/root/starlingx/rt/rpmbuild/RPMS’: No such file or directory" was printed. When execute command "build-iso", the message " Error -- could not install all explicitly listed packages" was printed.   The logs attached with this email are the output of those command. Anyone knows what these error messages meam or  the building details?  thanks