From a3830da1aa47ad302f1d89d69aec8eaa0c9e3175 Mon Sep 17 00:00:00 2001
From: Joe Hermaszewski <git@monoid.al>
Date: Sat, 7 Nov 2020 16:29:10 +0800
Subject: [PATCH] haskell: default name to "" when root isn't a path in
 developPackage

See https://github.com/NixOS/nixpkgs/issues/103062
---
 pkgs/development/haskell-modules/make-package-set.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/development/haskell-modules/make-package-set.nix b/pkgs/development/haskell-modules/make-package-set.nix
index 2641892672a..5d178e3b5a1 100644
--- a/pkgs/development/haskell-modules/make-package-set.nix
+++ b/pkgs/development/haskell-modules/make-package-set.nix
@@ -249,7 +249,7 @@ in package-set { inherit pkgs lib callPackage; } self // {
     # a cabal flag with '--flag=myflag'.
     developPackage =
       { root
-      , name ? builtins.baseNameOf root
+      , name ? if builtins.typeOf root == "path" then builtins.baseNameOf root else ""
       , source-overrides ? {}
       , overrides ? self: super: {}
       , modifier ? drv: drv