wmertens

Store Nix store in git

The Nix store is an immutable file tree store, addressed by output hashes ($outhash-$name or $out), but could also be tweaked to be addressed by the content hash of the file tree ($cas).

Git is a content-addressed immutable object store. It is optimized for storing files as blobs and directories as tree objects.

Here we consider using a git repository for deduplicating, compressing and distributing the Nix store. We want to achieve maximum deduplication so we extract small changes from files before storing, so they become more similar.

Method

vivshaw

declare namespace             ⵔ             {
             type             Ѻ
      =never;type             ⵔ
                =            "ⵔ"
             type             〇
                =            "〇"
             type             O
                =             〇
                |             ⵔ
             type             o             <

sjoerdvisscher

{-# LANGUAGE GHC2021, GADTs, DataKinds #-}
{-# LANGUAGE TypeData #-}
module Endofunctors where

import Control.Comonad (Comonad(..))
import Control.Comonad.Cofree (Cofree(..))
import Control.Monad (join, ap, void)
import Control.Monad.Free (Free(..))
import Data.Bifunctor (first, second, bimap)
import Data.Functor.Day