switch from CM to Lineage non-destructively

README.md

Switch from CyanogenMod to LineageOS without redownloading everything

1. Init the Lineage manifest: repo init -u ssh://[email protected]/LineageOS/android.git -b cm-14.1 (or cm-13.0 if you prefer that)
2. Update your local manifest (.repo/local_manifests/roomservice.xml), if it exists - find and replace "CyanogenMod" with "LineageOS" globally.
3. Move the git objects: mv .repo/project-objects/CyanogenMod .repo/project-objects/LineageOS
4. curl https://gist.github.com/fourkbomb/0d94e286dc6f173eb9053c0d75e84783/raw/cc1bb94337eab5e30efa689fe1d050db25a1124a/fixlinks.sh > ~/fixlinks.sh
5. chmod +x ~/fixlinks.sh
6. cd .repo/projects
7. find . -name '*.git' -exec ~/fixlinks.sh {} \;
8. And finally, fix the actual tree:
9. cd ../..
10. find * -name '.git' -exec ~/fixlinks.sh {} \;
11. repo sync
12. profit
13. You might wish to manually check for any remaining broken links (as suggested by @mdmower): cd .repo/projects && find . -xtype l

fixlinks.sh

#!/bin/sh

DIR=$1
echo $DIR
cd $DIR

for i in config description info logs objects packed-refs refs rr-cache shallow svn hooks; do
    orig=$(readlink $i)
    dest=$(echo $orig | sed 's/CyanogenMod/LineageOS/')
    if [ "$dest" '!=' "$orig" ]; then
        echo "Updated $i"
        rm $i
        ln -s $dest $i
    else
        echo "Skipping $i (not CM)"
    fi
done

Your script didn't catch all the symlinks for me. Updated:

#!/bin/sh

DIR=$1
echo $DIR
cd $DIR

for i in config description info logs objects packed-refs refs rr-cache shallow svn hooks; do
    orig=$(readlink $i)
    dest=$(echo $orig | sed 's/CyanogenMod/LineageOS/')
    if [ "$dest" '!=' "$orig" ]; then
        echo "Updated $i"
        rm $i
        ln -s $dest $i
    else
        echo "Skipping $i (not CM)"
    fi
done

You might also suggest users manually look for broken symlinks in .repo/projects with find . -xtype l.

Thanks, updated.

This resulted in a bunch of corrupted .git repos for me, had to manually rm -rf each one then repo sync again to get the next list to remove. Depending on your download speed it may be faster to sync from scratch as repeating the sync and delete process took a number of hours.