From eabd640e2d01ef0828f55f1db7f04ce4c852d83b Mon Sep 17 00:00:00 2001
From: Emile Clark-Boman <eclarkboman@gmail.com>
Date: Wed, 3 Sep 2025 14:52:35 +1000
Subject: [PATCH] flake.nix provides pipewire paths through env

---
 flake.nix | 24 ++++++++++++++++++++----
 1 file changed, 20 insertions(+), 4 deletions(-)

diff --git a/flake.nix b/flake.nix
index dec9bb2..6c3618c 100644
--- a/flake.nix
+++ b/flake.nix
@@ -22,7 +22,7 @@
     # list directory contents as absolute paths
     lsAbsolute = with builtins;
       path:
-        map (name: toPath path + toPath name) (attrNames (readDir path));
+        map (name: (toPath path) + "/" + name) (attrNames (readDir path));
   in {
     overlays.default = final: prev: {
       dorne = final.haskellPackages.developPackage {
@@ -47,6 +47,7 @@
 
             # C Dependencies
             pipewire
+            pipewire.dev
 
             # Language/Development Tooling
             clang-tools
@@ -58,9 +59,24 @@
           shell = "${pkgs.bash}/bin/bash";
 
           # SPA API is provided by pipewire's "dev" derivation output
-          C_INCLUDE_PATH =
-            builtins.concatStringSep ":"
-            (lsAbsolute "${pkgs.pipewire.dev}/include");
+          NIX_CFLAGS_COMPILE = let
+            # libpipewire (and libspa)
+            Ipipewire =
+              lsAbsolute "${pkgs.pipewire.dev}/include";
+
+            Ivendor =
+              builtins.map
+              (x: "-isystem ${x}")
+              Ipipewire;
+          in
+            builtins.concatStringsSep " " ([
+                (builtins.getEnv
+                  "NIX_CFLAGS_COMPILE")
+              ]
+              ++ Ivendor);
+
+          DORNE_LDFLAGS = let
+          in "-L${pkgs.pipewire}/lib";
         };
       }
     );