mio-ops/nix/sources.nix

142 lines
4 KiB
Nix

# This file has been generated by Niv.
let
#
# The fetchers. fetch_<type> fetches specs of type <type>.
#
fetch_file = pkgs: spec:
if spec.builtin or true
then builtins_fetchurl {inherit (spec) url sha256;}
else pkgs.fetchurl {inherit (spec) url sha256;};
fetch_tarball = pkgs: spec:
if spec.builtin or true
then builtins_fetchTarball {inherit (spec) url sha256;}
else pkgs.fetchzip {inherit (spec) url sha256;};
fetch_git = spec:
builtins.fetchGit {
url = spec.repo;
inherit (spec) rev ref;
};
fetch_builtin-tarball = spec:
builtins.trace ''
WARNING:
The niv type "builtin-tarball" will soon be deprecated. You should
instead use `builtin = true`.
$ niv modify <package> -a type=tarball -a builtin=true
''
builtins_fetchTarball {inherit (spec) url sha256;};
fetch_builtin-url = spec:
builtins.trace ''
WARNING:
The niv type "builtin-url" will soon be deprecated. You should
instead use `builtin = true`.
$ niv modify <package> -a type=file -a builtin=true
'' (builtins_fetchurl {inherit (spec) url sha256;});
#
# Various helpers
#
# The set of packages used when specs are fetched using non-builtins.
mkPkgs = sources: let
sourcesNixpkgs =
import (builtins_fetchTarball {inherit (sources.nixpkgs) url sha256;})
{};
hasNixpkgsPath = builtins.any (x: x.prefix == "nixpkgs") builtins.nixPath;
hasThisAsNixpkgsPath = <nixpkgs> == ./.;
in
if builtins.hasAttr "nixpkgs" sources
then sourcesNixpkgs
else if hasNixpkgsPath && !hasThisAsNixpkgsPath
then import <nixpkgs> {}
else
abort ''
Please specify either <nixpkgs> (through -I or NIX_PATH=nixpkgs=...) or
add a package called "nixpkgs" to your sources.json.
'';
# The actual fetching function.
fetch = pkgs: name: spec:
if !builtins.hasAttr "type" spec
then abort "ERROR: niv spec ${name} does not have a 'type' attribute"
else if spec.type == "file"
then fetch_file pkgs spec
else if spec.type == "tarball"
then fetch_tarball pkgs spec
else if spec.type == "git"
then fetch_git spec
else if spec.type == "builtin-tarball"
then fetch_builtin-tarball spec
else if spec.type == "builtin-url"
then fetch_builtin-url spec
else
abort
"ERROR: niv spec ${name} has unknown type ${builtins.toJSON spec.type}";
# Ports of functions for older nix versions
# a Nix version of mapAttrs if the built-in doesn't exist
mapAttrs =
builtins.mapAttrs
or (f: set:
with builtins;
listToAttrs (map (attr: {
name = attr;
value = f attr set.${attr};
}) (attrNames set)));
# fetchTarball version that is compatible between all the versions of Nix
builtins_fetchTarball = {
url,
sha256,
} @ attrs: let
inherit (builtins) lessThan nixVersion fetchTarball;
in
if lessThan nixVersion "1.12"
then fetchTarball {inherit url;}
else fetchTarball attrs;
# fetchurl version that is compatible between all the versions of Nix
builtins_fetchurl = {
url,
sha256,
} @ attrs: let
inherit (builtins) lessThan nixVersion fetchurl;
in
if lessThan nixVersion "1.12"
then fetchurl {inherit url;}
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 = fetch config.pkgs name spec;})
config.sources;
# The "config" used by the fetchers
mkConfig = {
sourcesFile ? ./sources.json,
sources ? builtins.fromJSON (builtins.readFile sourcesFile),
pkgs ? mkPkgs sources,
}: 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);
}