flake.nix

# SPDX-FileCopyrightText: 2022-2023 Temple University
#
# SPDX-License-Identifier: GPL-3.0-or-later
{
  description = "logan-center";

  inputs = {
    #: core frameworks
    std.url = "github:divnix/std";
    std.inputs.nixpkgs.follows = "nixpkgs";
    dmerge.follows = "std/dmerge";
    flake-parts.url = "github:hercules-ci/flake-parts";
    nixago.url = "github:nix-community/nixago";

    # NOTE: <divnix/yants>'s licensing is unclear:
    #       <https://github.com/divnix/yants/issues/4>
    #       <https://cs.tvl.fyi/depot/-/blob/nix/yants/README.md?subtree=true>
    #       note, however, that <divnix/yants> does retain the original's
    #       subtree `Apache-2.0` license copyright to Google LLC:
    #       <https://github.com/divnix/yants/blob/d7253ea436060f598c5d0ef3b22594fd28e7eab2/flake.nix#L1-L2>
    #       it's not clear how much <divnix/yants> differs from the original
    #       because *its git history was erased*.
    #       for safety and consistency with <divnix/std>,
    #       we will track its `yants` input for now...
    yants.follows = "std/yants";

    #: dev tools
    statix.url = "github:nerdypepper/statix";

    #: nixos/nixpkgs
    nixos.url = "github:NixOS/nixpkgs/nixos-unstable";
    nixpkgs.follows = "nixos";
  };

  outputs = {
    std,
    self,
    ...
  } @ inputs:
    std.growOn {
      inherit inputs;
      # 1. Each folder inside `cellsFrom` becomes a "Cell"
      #    Run for example: 'mkdir nix/mycell'
      # 2. Each <block>.nix or <block>/default.nix within it becomes a "Cell Block"
      #    Run for example: '$EDITOR nix/mycell/packages.nix' - see example content below
      cellsFrom = ./nix;
      # 3. Only blocks with these names [here: "packages" & "devshells"] are picked up by Standard
      #    It's a bit like the output type system of your flake project (hint: CLI & TUI!!)
      cellBlocks = with std.blockTypes; [
        (devshells "devshells" {ci.build = true;})
        (data "meta")
        (functions "devshellProfiles")
        (functions "lib")
        (installables "packages" {ci.build = true;})
        (nixago "nixago")
      ];
    }
    # 4. Run 'nix run github:divnix/std'
    # 'growOn' ... Soil:
    #  - here, compat for the Nix CLI
    #  - but can use anything that produces flake outputs (e.g. flake-parts or flake-utils)
    # 5. Run: nix run .
    {
      devShells = std.harvest self ["_automation" "devshells"];
    };

  nixConfig = {
    extra-experimental-features = "nix-command flakes";
    extra-substituters = [
      "https://kleintu.cachix.org"
      "https://dotfield.cachix.org"
      "https://nix-community.cachix.org"
    ];
    extra-trusted-public-keys = [
      "kleintu.cachix.org-1:NMaPJijd2bOo4ECoHaAbkUBESvPFj4qj5FgPy+6Hg2s="
      "dotfield.cachix.org-1:b5H/ucY/9PDARWG9uWA87ZKWUBU+hnfF30amwiXiaNk="
      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
    ];
  };
}