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462421d345
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 (c169ea5904).
33 lines
625 B
C++
33 lines
625 B
C++
#pragma once
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#include "path.hh"
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#include "hash.hh"
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#include <nlohmann/json_fwd.hpp>
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namespace nix { class Store; }
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namespace nix::fetchers {
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struct TreeInfo
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{
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Hash narHash;
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std::optional<uint64_t> revCount;
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std::optional<time_t> lastModified;
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bool operator ==(const TreeInfo & other) const
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{
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return
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narHash == other.narHash
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&& revCount == other.revCount
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&& lastModified == other.lastModified;
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}
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StorePath computeStorePath(Store & store) const;
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static TreeInfo fromJson(const nlohmann::json & json);
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nlohmann::json toJson() const;
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};
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}
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