From 4d64ef3eea9af3823b42d58125eb621b0f60d34a Mon Sep 17 00:00:00 2001
From: Benson Chu <bensonchu457@gmail.com>
Date: Sun, 14 Jul 2024 18:12:36 -0500
Subject: [PATCH] Comments

---
 common/overlays.nix | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/common/overlays.nix b/common/overlays.nix
index 707ed75..853198f 100644
--- a/common/overlays.nix
+++ b/common/overlays.nix
@@ -3,7 +3,11 @@ inputs:
   (final: prev: {
     mps-debug = prev.mps.overrideAttrs (old: {
       pname = old.pname + "-debug";
-      env.NIX_CFLAGS_COMPILE = old.env.NIX_CFLAGS_COMPILE + " -g -DCONFIG_VAR_COOL";
+      # Need to do this to patch dwarf information. For some reason,
+      # stdenv copies the source into /build/source, and then builds
+      # from there, leaving all the dwarf information hanging.
+      env.NIX_CFLAGS_COMPILE =
+        old.env.NIX_CFLAGS_COMPILE + " " + "-fdebug-prefix-map=/build/source=${old.src}";
       dontStrip = true;
     });
   })