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update niv sources.nix
This commit is contained in:
Milan Pässler
Nicolas Mattia
parent
8d562105f9
commit
28c2de3255
1 changed files with 160 additions and 78 deletions
238
nix/sources.nix
238
nix/sources.nix
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@ -1,89 +1,171 @@
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# This file has been generated by Niv.
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# A record, from name to path, of the third-party packages
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with rec
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{
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pkgs =
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if hasNixpkgsPath
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then
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if hasThisAsNixpkgsPath
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then import (builtins_fetchTarball { inherit (sources_nixpkgs) url sha256; }) {}
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else import <nixpkgs> {}
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else
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import (builtins_fetchTarball { inherit (sources_nixpkgs) url sha256; }) {};
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let
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sources_nixpkgs =
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if builtins.hasAttr "nixpkgs" sources
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then sources.nixpkgs
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else 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 fetchers. fetch_<type> fetches specs of type <type>.
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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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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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fetch_git = name: spec:
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let
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ref =
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if spec ? ref then spec.ref else
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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 '${name}': Please specify `ref`, `tag` or `branch`!";
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in
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builtins.fetchGit { url = spec.repo; inherit (spec) rev; inherit ref; };
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fetch_local = spec: spec.path;
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fetch_builtin-tarball = name: throw
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''[${name}] The niv type "builtin-tarball" is deprecated. You should instead use `builtin = true`.
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$ niv modify ${name} -a type=tarball -a builtin=true'';
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fetch_builtin-url = name: throw
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''[${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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# Various helpers
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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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# 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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# The actual fetching function.
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fetch = pkgs: name: spec:
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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 ${builtins.toJSON spec.type}";
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# If the environment variable NIV_OVERRIDE_${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 isNull (builtins.match "[a-zA-Z0-9]" c) then "_" else c) name;
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ersatz = builtins.getEnv "NIV_OVERRIDE_${saneName}";
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in
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if ersatz == "" then drv else ersatz;
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# Ports of functions for older nix versions
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# a Nix version of mapAttrs if the built-in doesn't exist
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mapAttrs = builtins.mapAttrs or (
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f: set: with builtins;
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listToAttrs (map (attr: { name = attr; value = f attr set.${attr}; }) (attrNames set))
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);
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# 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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# 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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# 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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# 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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# fetchTarball version that is compatible between all the versions of Nix
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builtins_fetchTarball =
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{ url, 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; }
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else
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fetchTarball attrs;
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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 (!isNull name) { inherit name; }))
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else
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fetchTarball attrs;
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# fetchurl version that is compatible between all the versions of Nix
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builtins_fetchurl =
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{ url, 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; }
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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 (!isNull name) { inherit name; }))
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else
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fetchurl attrs;
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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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name: spec:
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if builtins.hasAttr "outPath" spec
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then 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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fetchurl attrs;
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spec // { outPath = replace name (fetch config.pkgs name spec); }
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) config.sources;
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# A wrapper around pkgs.fetchzip that has inspectable arguments,
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# annoyingly this means we have to specify them
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fetchzip = { url, sha256 }@attrs: pkgs.fetchzip attrs;
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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 isNull sourcesFile 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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hasNixpkgsPath = (builtins.tryEval <nixpkgs>).success;
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hasThisAsNixpkgsPath =
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(builtins.tryEval <nixpkgs>).success && <nixpkgs> == ./.;
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sources = builtins.fromJSON (builtins.readFile ./sources.json);
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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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# borrowed from nixpkgs
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functionArgs = f: f.__functionArgs or (builtins.functionArgs f);
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callFunctionWith = autoArgs: f: args:
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let auto = builtins.intersectAttrs (functionArgs f) autoArgs;
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in f (auto // args);
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getFetcher = spec:
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let fetcherName =
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if builtins.hasAttr "type" spec
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then builtins.getAttr "type" spec
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else "builtin-tarball";
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in builtins.getAttr fetcherName {
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"tarball" = fetchzip;
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"builtin-tarball" = builtins_fetchTarball;
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"file" = pkgs.fetchurl;
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"builtin-url" = builtins_fetchurl;
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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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# NOTE: spec must _not_ have an "outPath" attribute
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mapAttrs (_: spec:
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if builtins.hasAttr "outPath" spec
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then 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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if builtins.hasAttr "url" spec && builtins.hasAttr "sha256" spec
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then
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spec //
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{ outPath = callFunctionWith spec (getFetcher spec) { }; }
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else spec
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) sources
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in
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mkSources (mkConfig {}) // { __functor = _: settings: mkSources (mkConfig settings); }
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