From 462421d34588c227eb736b07f7b40a38aa0972a6 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Mon, 30 Mar 2020 16:04:18 +0200
Subject: Backport libfetchers from the flakes branch

This provides a pluggable mechanism for defining new fetchers. It adds
a builtin function 'fetchTree' that generalizes existing fetchers like
'fetchGit', 'fetchMercurial' and 'fetchTarball'. 'fetchTree' takes a
set of attributes, e.g.

  fetchTree {
    type = "git";
    url = "https://example.org/repo.git";
    ref = "some-branch";
    rev = "abcdef...";
  }

The existing fetchers are just wrappers around this. Note that the
input attributes to fetchTree are the same as flake input
specifications and flake lock file entries.

All fetchers share a common cache stored in
~/.cache/nix/fetcher-cache-v1.sqlite. This replaces the ad hoc caching
mechanisms in fetchGit and download.cc (e.g. ~/.cache/nix/{tarballs,git-revs*}).

This also adds support for Git worktrees (c169ea59049f861aaba429f48b828d0820b74d1d).
---
 src/libstore/store-api.hh | 1 +
 1 file changed, 1 insertion(+)

(limited to 'src/libstore/store-api.hh')

diff --git a/src/libstore/store-api.hh b/src/libstore/store-api.hh
index 0fa59be6a..81014763d 100644
--- a/src/libstore/store-api.hh
+++ b/src/libstore/store-api.hh
@@ -28,6 +28,7 @@ MakeError(InvalidPath, Error);
 MakeError(Unsupported, Error);
 MakeError(SubstituteGone, Error);
 MakeError(SubstituterDisabled, Error);
+MakeError(NotInStore, Error);
 
 
 struct BasicDerivation;
-- 
cgit v1.2.3