/*
SPDX-FileCopyrightText: 2025–2026 toastal
SPDX-FileCopyrightText: 2026 Nixtamal contributors
SPDX-License-Identifier: ISC
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice & this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED “AS IS” & ISC DISCLAIMS ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY &
FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT,
OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
OF THIS SOFTWARE.
──────────────────────────────────────────────────────────────────────────────
┏┓╻+╻ ╱┏┳┓┏┓┏┳┓┏┓╻
┃┃┃┃┗━┓╹┃╹┣┫┃┃┃┣┫┃ This file was generated by Nixtamal.
╹┗┛╹╱ ╹ ╹ ╹╹╹ ╹╹╹┗┛ Do not edit as it will be overwritten.
──────────────────────────────────────────────────────────────────────────────
*/
{
system ? builtins.currentSystem,
bootstrap-nixpkgs ? null,
bootstrap-nixpkgs-lock-name ? null,
}:
let lock = builtins.fromJSON (builtins.readFile ./lock.json); in
assert (lock.v == "1.0.0");
let
hash-token = {
"0" = "sha256";
"1" = "sha512";
"2" = "blake3";
};
try-fetch = name: fetcher:
let
try-fetch' = failed-urls: url: urls:
let result = builtins.tryEval (fetcher url); in
if result.success then
result.value
else
let failed-urls' = [ url ] ++ failed-urls; in
if builtins.length urls <= 0 then
let fus = builtins.concatStringsSep " " failed-urls'; in
throw "Input 「${name}」fetchable @ [ ${fus} ]"
else
try-fetch' failed-urls' (builtins.head urls) (builtins.tail urls);
in
try-fetch' [ ];
builtin-fetch-tarball = {name, kind, hash}:
try-fetch name (url:
builtins.fetchTarball {
inherit url;
${hash-token.${builtins.toString hash.al}} = hash.vl;
}
) kind.ur kind.ms;
builtin-to-input = name: input:
let k = builtins.head input.kd; in
if k == 1 then
builtin-fetch-tarball {
inherit name;
kind = builtins.elemAt input.kd 1;
hash = input.ha;
}
else
throw "Unsupported input kind “${builtins.toString k}”.";
nixpkgs' =
if builtins.isNull bootstrap-nixpkgs then
builtin-to-input "nixpkgs-for-nixtamal" (
if builtins.isString bootstrap-nixpkgs-lock-name then
lock.i.${bootstrap-nixpkgs-lock-name}
else
lock.i.nixpkgs-nixtamal or lock.i.nixpkgs
)
else
bootstrap-nixpkgs;
pkgs = import nixpkgs' {inherit system;};
inherit (pkgs) lib;
fetch-zip = {name, kind, hash}: pkgs.fetchzip {
inherit name;
url = kind.ur;
hash = hash.vl;
} // lib.optionalAttrs (builtins.length kind.ms > 0) { urls = kind.ms; };
to-input = name: input:
let
k = builtins.head input.kd;
raw-input =
if k == 1 then
let
kind = builtins.elemAt input.kd 1;
fetch_time = kind.ft;
hash = input.ha;
in
if fetch_time == 0 then
fetch-zip {inherit name kind hash;}
else if fetch_time == 1 then
builtin-fetch-tarball {inherit name kind hash;}
else
throw "Unsupported fetch time ${fetch_time}."
else
throw "Unsupported input kind “${builtins.toString}”.";
in
raw-input;
in
builtins.mapAttrs to-input lock.i