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https://github.com/NixOS/nix.git
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543c06322c
Previously, for tarball flakes, we recorded the original URL of the tarball flake, rather than the URL to which it ultimately redirects. Thus, a flake URL like http://example.org/patchelf-latest.tar that redirects to http://example.org/patchelf-<revision>.tar was not really usable. We couldn't record the redirected URL, because sites like GitHub redirect to CDN URLs that we can't rely on to be stable. So now we use the redirected URL only if the server returns the `x-nix-is-immutable` or `x-amz-meta-nix-is-immutable` headers in its response. (cherry picked from commit1ad3328c5e) (cherry picked from commitdc718e28c9)
36 lines
921 B
C++
36 lines
921 B
C++
#pragma once
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///@file
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#include "types.hh"
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#include "hash.hh"
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#include <variant>
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#include <nlohmann/json_fwd.hpp>
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#include <optional>
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namespace nix::fetchers {
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typedef std::variant<std::string, uint64_t, Explicit<bool>> Attr;
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typedef std::map<std::string, Attr> Attrs;
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Attrs jsonToAttrs(const nlohmann::json & json);
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nlohmann::json attrsToJSON(const Attrs & attrs);
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std::optional<std::string> maybeGetStrAttr(const Attrs & attrs, const std::string & name);
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std::string getStrAttr(const Attrs & attrs, const std::string & name);
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std::optional<uint64_t> maybeGetIntAttr(const Attrs & attrs, const std::string & name);
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uint64_t getIntAttr(const Attrs & attrs, const std::string & name);
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std::optional<bool> maybeGetBoolAttr(const Attrs & attrs, const std::string & name);
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bool getBoolAttr(const Attrs & attrs, const std::string & name);
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std::map<std::string, std::string> attrsToQuery(const Attrs & attrs);
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}
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