0e996d2ccb
Using the lockfile hash as cache key did not make much sense, since changes to Unstraightened itself change what we fetch. And a static restore key means we never flush our cache: that might be ok if cache size was reasonable, but it is not (over 3 GiB). Switch to using the date as cache key, and only restore caches from the current month. Add tarballs as a second cache. I considered caching all of ~/.cache/nix, but do not want to find out the hard way any (new) caches are not portable if I add CI for other platforms. The tarball-cache seems to be another git tree, so it should be ok. |
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