77ffaea4fa
One application for this is pinning the 'nixpkgs' flake to the exact
revision used to build the NixOS system, e.g.
{
"flakes": [
{
"from": {
"id": "nixpkgs",
"type": "indirect"
},
"to": {
"owner": "NixOS",
"repo": "nixpkgs",
"type": "github",
"rev": "b0c285807d6a9f1b7562ec417c24fa1a30ecc31a"
}
}
],
"version": 2
}
64 lines
1.3 KiB
C++
64 lines
1.3 KiB
C++
#pragma once
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#include "types.hh"
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#include "fetchers.hh"
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namespace nix { class Store; }
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namespace nix::fetchers {
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struct Registry
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{
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enum RegistryType {
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Flag = 0,
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User = 1,
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System = 2,
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Global = 3,
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};
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RegistryType type;
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std::vector<
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std::tuple<
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std::shared_ptr<const Input>, // from
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std::shared_ptr<const Input>, // to
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Attrs // extra attributes
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>
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> entries;
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Registry(RegistryType type)
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: type(type)
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{ }
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static std::shared_ptr<Registry> read(
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const Path & path, RegistryType type);
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void write(const Path & path);
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void add(
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const std::shared_ptr<const Input> & from,
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const std::shared_ptr<const Input> & to,
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const Attrs & extraAttrs);
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void remove(const std::shared_ptr<const Input> & input);
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};
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typedef std::vector<std::shared_ptr<Registry>> Registries;
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std::shared_ptr<Registry> getUserRegistry();
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Path getUserRegistryPath();
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Registries getRegistries(ref<Store> store);
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void overrideRegistry(
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const std::shared_ptr<const Input> & from,
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const std::shared_ptr<const Input> & to,
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const Attrs & extraAttrs);
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std::pair<std::shared_ptr<const Input>, Attrs> lookupInRegistries(
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ref<Store> store,
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std::shared_ptr<const Input> input);
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}
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