{-# START_FILE package.yaml #-}
# Adapted from new-template.hsfiles

name:                {{name}}
version:             0.1.0.0
git:                 "https://git.pbrinkmeier.de/paul/{{name}}"
license:             MIT
author:              "{{author-name}}{{^author-name}}Author name here{{/author-name}}"
maintainer:          "{{author-email}}{{^author-email}}example@example.com{{/author-email}}"
copyright:           "{{year}}{{^year}}2022{{/year}} {{author-name}}{{^author-name}}Author name here{{/author-name}}"

extra-source-files:
- README.md

dependencies:
- base >= 4.7 && < 5

ghc-options:
- -Wall
- -Wcompat
- -Widentities
- -Wincomplete-record-updates
- -Wincomplete-uni-patterns
- -Wmissing-export-lists
- -Wmissing-home-modules
- -Wpartial-fields
- -Wredundant-constraints

library:
  source-dirs: src

executables:
  {{name}}-exe:
    main:                Main.hs
    source-dirs:         app
    ghc-options:
    - -threaded
    - -rtsopts
    - -with-rtsopts=-N
    dependencies:
    - {{name}}
    # Fix "Multiple files use the same module name", see
    # https://stackoverflow.com/questions/67519851/multiple-files-use-the-same-module-name
    when:
    - condition: false
      other-modules: Paths_{{name}}

tests:
  {{name}}-test:
    main:                Spec.hs
    source-dirs:         test
    ghc-options:
    - -threaded
    - -rtsopts
    - -with-rtsopts=-N
    dependencies:
    - {{name}}

{-# START_FILE stack.yaml #-}
resolver: ghc-9.0.2
packages:
- .
nix:
  enable: true
  shell-file: stack-shell.nix
  path: ["nixpkgs=./nix/pkgs.nix"]

{-# START_FILE Setup.hs #-}
import Distribution.Simple
main = defaultMain

{-# START_FILE test/Spec.hs #-}
main :: IO ()
main = putStrLn "Test suite not yet implemented"

{-# START_FILE app/Main.hs #-}
module Main (main) where

main :: IO ()
main = putStrLn "Hello, World!"

{-# START_FILE src/deleteme #-}
I am only here to make Stack create src/ :) Pls delete me.

{-# START_FILE README.md #-}
# {{name}}

{-# START_FILE LICENSE #-}
Copyright {{year}}{{^year}}2022{{/year}} {{author-name}}{{^author-name}}Author name here{{/author-name}}

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

{-# START_FILE .gitignore #-}
.stack-work/
.vscode/

{-# START_FILE default.nix #-}
{ pkgs ? import ./nix/pkgs.nix {} }:
let
  tools = with pkgs; [
    # nix tools
    niv
    nix-tree

    # haskell tools
    stack
  ];
in
  pkgs.mkShellNoCC {
    nativeBuildInputs = tools;
  }

{-# START_FILE nix/pkgs.nix #-}
{ overlays ? [] }:
let
  sources = import ./sources.nix;
in
  import sources.nixpkgs { inherit overlays; }

{-# START_FILE nix/sources.nix #-}
# This file has been generated by Niv.

let

  #
  # The fetchers. fetch_<type> fetches specs of type <type>.
  #

  fetch_file = pkgs: name: spec:
    let
      name' = sanitizeName name + "-src";
    in
      if spec.builtin or true then
        builtins_fetchurl { inherit (spec) url sha256; name = name'; }
      else
        pkgs.fetchurl { inherit (spec) url sha256; name = name'; };

  fetch_tarball = pkgs: name: spec:
    let
      name' = sanitizeName name + "-src";
    in
      if spec.builtin or true then
        builtins_fetchTarball { name = name'; inherit (spec) url sha256; }
      else
        pkgs.fetchzip { name = name'; inherit (spec) url sha256; };

  fetch_git = name: spec:
    let
      ref =
        if spec ? ref then spec.ref else
          if spec ? branch then "refs/heads/${spec.branch}" else
            if spec ? tag then "refs/tags/${spec.tag}" else
              abort "In git source '${name}': Please specify `ref`, `tag` or `branch`!";
    in
      builtins.fetchGit { url = spec.repo; inherit (spec) rev; inherit ref; };

  fetch_local = spec: spec.path;

  fetch_builtin-tarball = name: throw
    ''[${name}] The niv type "builtin-tarball" is deprecated. You should instead use `builtin = true`.
        $ niv modify ${name} -a type=tarball -a builtin=true'';

  fetch_builtin-url = name: throw
    ''[${name}] The niv type "builtin-url" will soon be deprecated. You should instead use `builtin = true`.
        $ niv modify ${name} -a type=file -a builtin=true'';

  #
  # Various helpers
  #

  # https://github.com/NixOS/nixpkgs/pull/83241/files#diff-c6f540a4f3bfa4b0e8b6bafd4cd54e8bR695
  sanitizeName = name:
    (
      concatMapStrings (s: if builtins.isList s then "-" else s)
        (
          builtins.split "[^[:alnum:]+._?=-]+"
            ((x: builtins.elemAt (builtins.match "\\.*(.*)" x) 0) name)
        )
    );

  # The set of packages used when specs are fetched using non-builtins.
  mkPkgs = sources: system:
    let
      sourcesNixpkgs =
        import (builtins_fetchTarball { inherit (sources.nixpkgs) url sha256; }) { inherit system; };
      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 name spec
    else if spec.type == "tarball" then fetch_tarball pkgs name spec
    else if spec.type == "git" then fetch_git name spec
    else if spec.type == "local" then fetch_local spec
    else if spec.type == "builtin-tarball" then fetch_builtin-tarball name
    else if spec.type == "builtin-url" then fetch_builtin-url name
    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
  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
  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
  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); }

{-# START_FILE nix/sources.json #-}
{
    "niv": {
        "branch": "master",
        "description": "Easy dependency management for Nix projects",
        "homepage": "https://github.com/nmattia/niv",
        "owner": "nmattia",
        "repo": "niv",
        "rev": "351d8bc316bf901a81885bab5f52687ec8ccab6e",
        "sha256": "1yzhz7ihkh6p2sxhp3amqfbmm2yqzaadqqii1xijymvl8alw5rrr",
        "type": "tarball",
        "url": "https://github.com/nmattia/niv/archive/351d8bc316bf901a81885bab5f52687ec8ccab6e.tar.gz",
        "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
    },
    "nixpkgs": {
        "branch": "nixpkgs-unstable",
        "description": "Nix Packages collection",
        "homepage": "",
        "owner": "NixOS",
        "repo": "nixpkgs",
        "rev": "d4f8e53720b554b6dac71c7ec62b3b51158905f9",
        "sha256": "0b76rrh6xl491kqmcrdasj2frbw2632k8knyavwk4rdn4vps7g21",
        "type": "tarball",
        "url": "https://github.com/NixOS/nixpkgs/archive/d4f8e53720b554b6dac71c7ec62b3b51158905f9.tar.gz",
        "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
    }
}

{-# START_FILE stack-shell.nix #-}
{}:
let
  pkgs = import ./nix/pkgs.nix {};
  haskellDeps = import ./nix/haskell-deps.nix;
in
  pkgs.haskell.lib.buildStackProject {
    name = "alfred-margaret";
    ghc = pkgs.haskellPackages.ghcWithPackages haskellDeps;
  }

{-# START_FILE nix/haskell-deps.nix #-}
haskellPackages: with haskellPackages; [
]