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06b00ba713
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2 Commits

Author SHA1 Message Date
Vincent Ambo
06b00ba713 chore: Add missing copyright headers to source files 2019-11-03 01:33:36 +00:00
Vincent Ambo
e836c4eef1 feat(popcount): Add new narinfo-based popcount implementation 
Adds an implementation of popcount that, instead of realising
derivations locally, just queries the cache's narinfo files.

The downside of this is that calculating popularity for arbitrary Nix
package sets is not possible with this implementation. The upside is
that calculating the popularity for an entire Nix channel can now be
done in ~10 seconds[0].

This fixes #65.

[0]: Assuming a /fast/ internet connection.
 2019-11-03 01:33:36 +00:00