Mark H Weaver <m...@netris.org> skribis: > Ricardo Wurmus <rek...@elephly.net> writes: > >>> +(define-public swh-plugins-lv2 >>> + (let ((commit "5098e09e255eaed14e0d40ca5e7e6dfcb782d7ea")) >> >> We usually don’t use full commit hashes. You could probably trim it to >> the first six characters or so. > > I would recommend using at least 10 characters, maybe more. We should > use enough characters to ensure that the commit id remains unique for as > long as this package version remains in use -- keeping in mind that for > purposes of reproducing old experiments, someone might try to build this > package+version several years from now.
I sympathize with this. I would think 10 digits is more than needed, though: With 6 hex digits, it takes on average 16^6 = 16M commits before the 6-digit ID is ambiguous, and with 8 hex digits that goes to 4 billion commits (Emacs has around 123,000 commits as an example.) But anyway, to be super-safe, we could use the full SHA1 in the URL, but strip it in the ‘version’ field so that it remains readable. Thoughts? Thanks, Ludo’.
