Looking at [1], it seems that the only thing that block acorn/rollup/buble migration is this renaming: Britney does not try the big migration (it looks like it does not see the double link between rollup and acorn, named as "node-acorn (>= 6)" in deps), then since all is linked, every test are rejected. The first Britney's test shows that it tries to migrate acorn, node-espree, node-falafel and remove 2 old acorn-* only:
trying: node-falafel acorn node-webpack -node-acorn-dynamic-import node-espree -node-acorn-jsx skipped: node-falafel acorn node-webpack -node-acorn-dynamic-import node-espree -node-acorn-jsx (31, 0, 31) got: 25+0: a-1:a-0:a-0:a-0:i-23:m-0:m-0:p-0:s-1 * i386: node-acorn-object-spread, node-buble, node-rollup-plugin-buble Since the previous discussion showed that I was completely stupid for daring to think that this was going to be a problem, I do not reopen this BTS. [1] https://release.debian.org/britney/update_output.txt