Use npins instead of Flakes for dependencies

- Simplifies the whole thing due to not having to mess with `system`, see NixOS/nix#3843
- Makes the lockfile _way_ smaller, see NixOS/nix#7730

.reuse/dep5

@@ -5,6 +5,10 @@ Copyright: 2019 Serokell <[email protected]>
  2019 Lars Jellema <[email protected]>
 License: MPL-2.0
 
+Files: npins/*
+Copyright: 2024 Silvan Mosberger <[email protected]>
+License: MPL-2.0
+
 Files: test/diff/*
 Copyright: 2024 piegames <[email protected]>
 License: MPL-2.0

default.nix

@@ -1,17 +1,66 @@
-# SPDX-FileCopyrightText: 2020 Serokell <https://serokell.io/>
+# © 2019 Serokell <[email protected]>
+# © 2019 Lars Jellema <[email protected]>
+# © 2024 Silvan Mosberger <[email protected]>
 #
 # SPDX-License-Identifier: MPL-2.0
 
-(import
- (
- let
- lock = builtins.fromJSON (builtins.readFile ./flake.lock);
- in
- fetchTarball {
- url = "https://github.com/edolstra/flake-compat/archive/${lock.nodes.flake-compat.locked.rev}.tar.gz";
- sha256 = lock.nodes.flake-compat.locked.narHash;
- }
- )
- {
- src = ./.;
- }).defaultNix
+{
+ system ? builtins.currentSystem,
+ sources ? import ./npins,
+}:
+let
+ overlay = self: super: {
+ haskell = super.haskell // {
+ packageOverrides = self: super: {
+ nixfmt = self.callCabal2nix "nixfmt" src { };
+ };
+ };
+ };
+
+ pkgs = import sources.nixpkgs {
+ inherit system;
+ overlays = [ overlay (import (sources.serokell-nix + "/overlay")) ];
+ config = {};
+ };
+
+ inherit (pkgs) haskell lib;
+
+ regexes =
+ [ ".*.cabal$" "^src.*" "^main.*" "^Setup.hs$" "^js.*" "LICENSE" ];
+ src = builtins.path {
+ path = ./.;
+ name = "nixfmt-src";
+ filter = path: type:
+ let relPath = lib.removePrefix (toString ./. + "/") (toString path);
+ in lib.any (re: builtins.match re relPath != null) regexes;
+ };
+
+ build = pkgs.haskellPackages.nixfmt;
+
+in
+build // rec {
+ packages = {
+ nixfmt = build;
+ nixfmt-static = haskell.lib.justStaticExecutables packages.nixfmt;
+ nixfmt-deriver = packages.nixfmt-static.cabal2nixDeriver;
+
+ nixfmt-shell = packages.nixfmt.env.overrideAttrs (oldAttrs: {
+ buildInputs = oldAttrs.buildInputs ++ (with pkgs; [
+ # nixfmt: expand
+ cabal-install
+ stylish-haskell
+ shellcheck
+ npins
+ ]);
+ });
+
+ inherit (pkgs) reuse;
+ };
+
+ shell = packages.nixfmt-shell;
+
+ checks = {
+ hlint = pkgs.build.haskell.hlint ./.;
+ stylish-haskell = pkgs.build.haskell.stylish-haskell ./.;
+ };
+}