I have been fiddling with Dorrie lately. Dorrie is a web interface to create Fedora spins, remixes and installation media. But working with Dorrie requires one to have a Fedora repository at disposal if one has to build Live ISOs. I rule the possibility of downloading packages from the internet for testing. You need to have a local repository for testing it in a nice and efficient way. I tried to create a dummy Fedora repository with 0-byte .rpm files and tried to mock livecd-creator, but I failed. I forgot that livecd-creator installs the packages during the process of creating a Live ISO. Nevertheless, this attempt was not without any result. I fixed and updated Dorrie’s code to handle offline repositories.
Now, we (I and sayan) are working on another feature for Dorrie: building installation media (just like Fedora installation DVD). We are using pungi for the purpose. If my calculations are correct, then building an installation media leaves an option to use 0-byte .rpm files. But, this is not the topic of this post ;). I will talk on how to create a dummy Fedora repository.
Fedora repositories mainly have two important components for a Fedora version: releases and updates. All files in the dummy repository can’t be fake, the metadata files have to be there for real, otherwise the packages names won’t be found. I have devised a shell script for creating such a dummy repository.
# Destination directory
file extensions to be touched
patterns to exclude from rsync
EXCLUDEPATTERN="–exclude=source/ –exclude=debug/ –exclude=repoview/
–exclude=x8664 –exclude=Everything/ –exclude=Live/"
This will create only the directories and 0-byte .iso and .rpm files
#Since the files created will have newer timestamp, when we run
#rsync for real, the .iso and .rpm files won’t be downloaded
rsync -auvr $URL $DESTDIR –dry-run $EXCLUDE_PATTERN |
while read line; do
expr match "$line" ".*/$" -ne 0 ]; then
mkdir -p $DESTDIR/$line
expr match "$line" "$FILE_EXTENSIONS_PATTERN" -ne 0 ]; then
Download metadata files
rsync -auvr $URL $DESTDIR $EXCLUDE_PATTERN –progress
This is just a sample code. The above code can be customized to do more versatile dummy cloning of Fedora repositories.