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+# This file has been generated by Niv.
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+
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+let
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+
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+ #
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+ # The fetchers. fetch_<type> fetches specs of type <type>.
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+ #
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+
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+ fetch_file = pkgs: name: spec:
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+ let
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+ name' = sanitizeName name + "-src";
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+ in
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+ if spec.builtin or true then
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+ builtins_fetchurl { inherit (spec) url sha256; name = name'; }
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+ else
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+ pkgs.fetchurl { inherit (spec) url sha256; name = name'; };
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+
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+ fetch_tarball = pkgs: name: spec:
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+ let
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+ name' = sanitizeName name + "-src";
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+ in
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+ if spec.builtin or true then
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+ builtins_fetchTarball { name = name'; inherit (spec) url sha256; }
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+ else
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+ pkgs.fetchzip { name = name'; inherit (spec) url sha256; };
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+
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+ fetch_git = name: spec:
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+ let
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+ ref =
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+ spec.ref or (
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+ if spec ? branch then "refs/heads/${spec.branch}" else
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+ if spec ? tag then "refs/tags/${spec.tag}" else
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+ abort "In git source '${name}': Please specify `ref`, `tag` or `branch`!"
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+ );
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+ submodules = spec.submodules or false;
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+ submoduleArg =
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+ let
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+ nixSupportsSubmodules = builtins.compareVersions builtins.nixVersion "2.4" >= 0;
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+ emptyArgWithWarning =
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+ if submodules
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+ then
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+ builtins.trace
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+ (
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+ "The niv input \"${name}\" uses submodules "
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+ + "but your nix's (${builtins.nixVersion}) builtins.fetchGit "
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+ + "does not support them"
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+ )
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+ { }
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+ else { };
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+ in
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+ if nixSupportsSubmodules
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+ then { inherit submodules; }
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+ else emptyArgWithWarning;
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+ in
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+ builtins.fetchGit
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+ ({ url = spec.repo; inherit (spec) rev; inherit ref; } // submoduleArg);
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+
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+ fetch_local = spec: spec.path;
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+
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+ fetch_builtin-tarball = name: throw
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+ ''[${name}] The niv type "builtin-tarball" is deprecated. You should instead use `builtin = true`.
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+ $ niv modify ${name} -a type=tarball -a builtin=true'';
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+
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+ fetch_builtin-url = name: throw
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+ ''[${name}] The niv type "builtin-url" will soon be deprecated. You should instead use `builtin = true`.
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+ $ niv modify ${name} -a type=file -a builtin=true'';
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+
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+ #
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+ # Various helpers
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+ #
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+
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+ # https://github.com/NixOS/nixpkgs/pull/83241/files#diff-c6f540a4f3bfa4b0e8b6bafd4cd54e8bR695
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+ sanitizeName = name:
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+ (
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+ concatMapStrings (s: if builtins.isList s then "-" else s)
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+ (
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+ builtins.split "[^[:alnum:]+._?=-]+"
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+ ((x: builtins.elemAt (builtins.match "\\.*(.*)" x) 0) name)
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+ )
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+ );
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+
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+ # The set of packages used when specs are fetched using non-builtins.
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+ mkPkgs = sources: system:
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+ let
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+ sourcesNixpkgs =
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+ import (builtins_fetchTarball { inherit (sources.nixpkgs) url sha256; }) { inherit system; };
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+ hasNixpkgsPath = builtins.any (x: x.prefix == "nixpkgs") builtins.nixPath;
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+ hasThisAsNixpkgsPath = <nixpkgs> == ./.;
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+ in
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+ if builtins.hasAttr "nixpkgs" sources
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+ then sourcesNixpkgs
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+ else if hasNixpkgsPath && ! hasThisAsNixpkgsPath then
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+ import <nixpkgs> { }
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+ else
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+ abort
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+ ''
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+ Please specify either <nixpkgs> (through -I or NIX_PATH=nixpkgs=...) or
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+ add a package called "nixpkgs" to your sources.json.
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+ '';
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+
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+ # The actual fetching function.
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+ fetch = pkgs: name: spec:
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+
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+ if ! builtins.hasAttr "type" spec then
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+ abort "ERROR: niv spec ${name} does not have a 'type' attribute"
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+ else if spec.type == "file" then fetch_file pkgs name spec
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+ else if spec.type == "tarball" then fetch_tarball pkgs name spec
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+ else if spec.type == "git" then fetch_git name spec
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+ else if spec.type == "local" then fetch_local spec
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+ else if spec.type == "builtin-tarball" then fetch_builtin-tarball name
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+ else if spec.type == "builtin-url" then fetch_builtin-url name
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+ else
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+ abort "ERROR: niv spec ${name} has unknown type ${builtins.toJSON spec.type}";
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+
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+ # If the environment variable NIV_OVERRIDE_${name} is set, then use
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+ # the path directly as opposed to the fetched source.
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+ replace = name: drv:
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+ let
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+ saneName = stringAsChars (c: if (builtins.match "[a-zA-Z0-9]" c) == null then "_" else c) name;
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+ ersatz = builtins.getEnv "NIV_OVERRIDE_${saneName}";
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+ in
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+ if ersatz == "" then drv else
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+ # this turns the string into an actual Nix path (for both absolute and
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+ # relative paths)
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+ if builtins.substring 0 1 ersatz == "/" then /. + ersatz else /. + builtins.getEnv "PWD" + "/${ersatz}";
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+
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+ # Ports of functions for older nix versions
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+
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+ # a Nix version of mapAttrs if the built-in doesn't exist
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+ mapAttrs = builtins.mapAttrs or (
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+ f: set: with builtins;
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+ listToAttrs (map (attr: { name = attr; value = f attr set.${attr}; }) (attrNames set))
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+ );
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+
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+ # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/lists.nix#L295
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+ range = first: last: if first > last then [ ] else builtins.genList (n: first + n) (last - first + 1);
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+
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+ # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L257
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+ stringToCharacters = s: map (p: builtins.substring p 1 s) (range 0 (builtins.stringLength s - 1));
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+
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+ # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L269
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+ stringAsChars = f: s: concatStrings (map f (stringToCharacters s));
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+ concatMapStrings = f: list: concatStrings (map f list);
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+ concatStrings = builtins.concatStringsSep "";
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+
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+ # https://github.com/NixOS/nixpkgs/blob/8a9f58a375c401b96da862d969f66429def1d118/lib/attrsets.nix#L331
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+ optionalAttrs = cond: as: if cond then as else { };
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+
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+ # fetchTarball version that is compatible between all the versions of Nix
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+ builtins_fetchTarball = { url, name ? null, sha256 }@attrs:
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+ let
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+ inherit (builtins) lessThan nixVersion fetchTarball;
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+ in
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+ if lessThan nixVersion "1.12" then
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+ fetchTarball ({ inherit url; } // (optionalAttrs (name != null) { inherit name; }))
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+ else
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+ fetchTarball attrs;
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+
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+ # fetchurl version that is compatible between all the versions of Nix
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+ builtins_fetchurl = { url, name ? null, sha256 }@attrs:
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+ let
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+ inherit (builtins) lessThan nixVersion fetchurl;
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+ in
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+ if lessThan nixVersion "1.12" then
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+ fetchurl ({ inherit url; } // (optionalAttrs (name != null) { inherit name; }))
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+ else
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+ fetchurl attrs;
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+
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+ # Create the final "sources" from the config
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+ mkSources = config:
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+ mapAttrs
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+ (
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+ name: spec:
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+ if builtins.hasAttr "outPath" spec
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+ then
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+ abort
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+ "The values in sources.json should not have an 'outPath' attribute"
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+ else
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+ spec // { outPath = replace name (fetch config.pkgs name spec); }
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+ )
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+ config.sources;
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+
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+ # The "config" used by the fetchers
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+ mkConfig =
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+ { sourcesFile ? if builtins.pathExists ./sources.json then ./sources.json else null
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+ , sources ? if sourcesFile == null then { } else builtins.fromJSON (builtins.readFile sourcesFile)
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+ , system ? builtins.currentSystem
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+ , pkgs ? mkPkgs sources system
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+ }: rec {
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+ # The sources, i.e. the attribute set of spec name to spec
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+ inherit sources;
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+
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+ # The "pkgs" (evaluated nixpkgs) to use for e.g. non-builtin fetchers
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+ inherit pkgs;
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+ };
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+
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+in
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+mkSources (mkConfig { }) // { __functor = _: settings: mkSources (mkConfig settings); }
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