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# This file has been generated by Niv.
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let
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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 '${name}': Please specify `ref`, `tag` or `branch`!";
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submodules = if spec ? submodules then spec.submodules else false;
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submoduleArg =
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let
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nixSupportsSubmodules = builtins.compareVersions builtins.nixVersion "2.4" >= 0;
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emptyArgWithWarning =
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if submodules == true
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then
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builtins.trace
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(
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"The niv input \"${name}\" uses submodules "
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+ "but your nix's (${builtins.nixVersion}) builtins.fetchGit "
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+ "does not support them"
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)
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{}
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else {};
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in
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if nixSupportsSubmodules
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then { inherit submodules; }
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else emptyArgWithWarning;
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in
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builtins.fetchGit
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({ url = spec.repo; inherit (spec) rev; inherit ref; } // submoduleArg);
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fetch_local = spec: spec.path;
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fetch_builtin-tarball = name: throw
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''[${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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|
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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
|
| + |
else if hasNixpkgsPath && ! hasThisAsNixpkgsPath then
|
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import <nixpkgs> {}
|
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else
|
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abort
|
| + |
''
|
| + |
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.
|
| + |
fetch = pkgs: name: spec:
|
| + |
|
| + |
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
|
| + |
else if spec.type == "tarball" then fetch_tarball pkgs name spec
|
| + |
else if spec.type == "git" then fetch_git name spec
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else if spec.type == "local" then fetch_local spec
|
| + |
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
|
| + |
abort "ERROR: niv spec ${name} has unknown type ${builtins.toJSON spec.type}";
|
| + |
|
| + |
# If the environment variable NIV_OVERRIDE_${name} is set, then use
|
| + |
# the path directly as opposed to the fetched source.
|
| + |
replace = name: drv:
|
| + |
let
|
| + |
saneName = stringAsChars (c: if isNull (builtins.match "[a-zA-Z0-9]" c) then "_" else c) name;
|
| + |
ersatz = builtins.getEnv "NIV_OVERRIDE_${saneName}";
|
| + |
in
|
| + |
if ersatz == "" then drv else
|
| + |
# this turns the string into an actual Nix path (for both absolute and
|
| + |
# relative paths)
|
| + |
if builtins.substring 0 1 ersatz == "/" then /. + ersatz else /. + builtins.getEnv "PWD" + "/${ersatz}";
|
| + |
|
| + |
# Ports of functions for older nix versions
|
| + |
|
| + |
# a Nix version of mapAttrs if the built-in doesn't exist
|
| + |
mapAttrs = builtins.mapAttrs or (
|
| + |
f: set: with builtins;
|
| + |
listToAttrs (map (attr: { name = attr; value = f attr set.${attr}; }) (attrNames set))
|
| + |
);
|
| + |
|
| + |
# 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);
|
| + |
|
| + |
# 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));
|
| + |
|
| + |
# https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L269
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| + |
stringAsChars = f: s: concatStrings (map f (stringToCharacters s));
|
| + |
concatMapStrings = f: list: concatStrings (map f list);
|
| + |
concatStrings = builtins.concatStringsSep "";
|
| + |
|
| + |
# https://github.com/NixOS/nixpkgs/blob/8a9f58a375c401b96da862d969f66429def1d118/lib/attrsets.nix#L331
|
| + |
optionalAttrs = cond: as: if cond then as else {};
|
| + |
|
| + |
# fetchTarball version that is compatible between all the versions of Nix
|
| + |
builtins_fetchTarball = { url, name ? null, sha256 }@attrs:
|
| + |
let
|
| + |
inherit (builtins) lessThan nixVersion fetchTarball;
|
| + |
in
|
| + |
if lessThan nixVersion "1.12" then
|
| + |
fetchTarball ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; }))
|
| + |
else
|
| + |
fetchTarball attrs;
|
| + |
|
| + |
# fetchurl version that is compatible between all the versions of Nix
|
| + |
builtins_fetchurl = { url, name ? null, sha256 }@attrs:
|
| + |
let
|
| + |
inherit (builtins) lessThan nixVersion fetchurl;
|
| + |
in
|
| + |
if lessThan nixVersion "1.12" then
|
| + |
fetchurl ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; }))
|
| + |
else
|
| + |
fetchurl attrs;
|
| + |
|
| + |
# Create the final "sources" from the config
|
| + |
mkSources = config:
|
| + |
mapAttrs (
|
| + |
name: spec:
|
| + |
if builtins.hasAttr "outPath" spec
|
| + |
then abort
|
| + |
"The values in sources.json should not have an 'outPath' attribute"
|
| + |
else
|
| + |
spec // { outPath = replace name (fetch config.pkgs name spec); }
|
| + |
) config.sources;
|
| + |
|
| + |
# The "config" used by the fetchers
|
| + |
mkConfig =
|
| + |
{ sourcesFile ? if builtins.pathExists ./sources.json then ./sources.json else null
|
| + |
, sources ? if isNull sourcesFile then {} else builtins.fromJSON (builtins.readFile sourcesFile)
|
| + |
, system ? builtins.currentSystem
|
| + |
, pkgs ? mkPkgs sources system
|
| + |
}: rec {
|
| + |
# The sources, i.e. the attribute set of spec name to spec
|
| + |
inherit sources;
|
| + |
|
| + |
# The "pkgs" (evaluated nixpkgs) to use for e.g. non-builtin fetchers
|
| + |
inherit pkgs;
|
| + |
};
|
| + |
|
| + |
in
|
| + |
mkSources (mkConfig {}) // { __functor = _: settings: mkSources (mkConfig settings); }
|