nix-super/src/libfetchers/tree-info.cc

#include "tree-info.hh"
#include "store-api.hh"

#include <nlohmann/json.hpp>

namespace nix::fetchers {

StorePath TreeInfo::computeStorePath(Store & store) const
{
    assert(narHash);
    return store.makeFixedOutputPath(true, narHash, "source");
}

}
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). 2020-03-30 17:04:18 +03:00			`#include "tree-info.hh"`
			`#include "store-api.hh"`

			`#include <nlohmann/json.hpp>`

			`namespace nix::fetchers {`

			`StorePath TreeInfo::computeStorePath(Store & store) const`
			`{`
			`assert(narHash);`
			`return store.makeFixedOutputPath(true, narHash, "source");`
			`}`

			`}`