chore: workflow to print diffs vs libevm-base tag
#18
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Why this should be merged
Provides an objective measure of the diff against geth.
How this works
--diff-filter=aexcludes additions (i.e. libevm-specific files), leaving only modifications, deletions, etc.--word-difffine-grained diff instead of per-line--unified=0removes context, which is noisy when viewing the diff as a wholeThe
libevm-basetag MUST now always track the geth version from which the current version of libevm diverges. This workflow performs a difflibevm-base..HEAD(i.e. diff if the PR is merged) andlibevm-base..libevm(i.e. the current status quo).In the future we can look at performing a "diff of diffs" and warn if a PR increases destructive changes. Basic [+x -y] stats could also be extracted.
How this was tested
Pain and suffering (look at the commit history).