Eelco Dolstra

Lazy trees v2

9

## Motivation This adds a setting `lazy-trees` that causes flake inputs to be "mounted" as virtual filesystems on top of /nix/store as random "virtual" store paths. Only when the store...

## Motivation Caching NAR hashes instead of store paths makes the cache more general, because we can always compute the store path from the NAR hash, but not the other...

Git fetcher: Don't compute revCount/lastModified if they're already specified

5

## Motivation This avoids a potentially expensive computation of `revCount` (and `lastModified`, but that's cheap) in the common case where it's already known (namely because it's in a lock file)....

TCP support in the Nix daemon

11

This PR makes it possible to connect to a remote Nix daemon via TCP, and for the Nix daemon to listen on multiple sockets (including TCP) via systemd. Lacking encryption/authentication,...

## Motivation This may be more efficient than `fetchTree` since it allows substitution from binary caches if `narHash` is specified in the input attributes. This is what `call-flake.nix` already used...

nix registry pin: Mark the resulting registry entry as exact

3

## Motivation Since the resulting target flakeref contains attributes like `lastModified` or `narHash`, it's not suitable for overriding. This led to errors like ``` $ nix build nixpkgs/24.05#hello error: 'lastModified'...

Make `nix flake metadata|update|lock` lazy

4

## Motivation These don't need to evaluate anything (except for the flake metadata in `flake.nix`) so we can make these commands operate on lazy trees (i.e. without having to copy...

## Motivation This fixes the issue where updating a Git input does a non-shallow fetch, and then a subsequent eval does a shallow refetch because the revCount is already known....

Unlike `fetchTree`, this allow inputs to be substituted (since the fetcher won't return any output attributes like `revCount` that weren't in the input attributes). See https://github.com/NixOS/nix/pull/14634.