From 8421b100dd93ef4daef5b58a9be1dd0115e1dfeb Mon Sep 17 00:00:00 2001
From: Tony Zorman <soliditsallgood@mailbox.org>
Date: Mon, 20 Nov 2023 19:37:31 +0100
Subject: [PATCH] flake: Allow users to modify the dev shell

Copy of xmonad/xmonad-contrib@f1ea1e533d431135b156a2e30a655427a7988a74
Documentation for this is already inside of contrib's NIX.md.

Co-authored-by: Ivan Malison <IvanMalison@gmail.com>
---
 flake.nix | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/flake.nix b/flake.nix
index bb88faf..6fd94c3 100644
--- a/flake.nix
+++ b/flake.nix
@@ -74,11 +74,15 @@
   in flake-utils.lib.eachDefaultSystem (system:
   let pkgs = import nixpkgs { inherit system overlays; };
       hpkg = pkgs.lib.attrsets.getAttrFromPath (hpath defComp) pkgs;
+      modifyDevShell =
+        if builtins.pathExists ./develop.nix
+        then import ./develop.nix
+        else _: x: x;
   in
   rec {
-    devShell = hpkg.shellFor {
+    devShell = hpkg.shellFor (modifyDevShell pkgs {
       packages = p: [ p.xmonad ];
-    };
+    });
     defaultPackage = hpkg.xmonad;
     # An auxiliary NixOS module that modernises the standard xmonad NixOS module
     # and wrapper script used, replacing them with versions from unstable.