1 files changed, 18 insertions, 0 deletions

diff --git a/overlays/libdscp/default.nix b/overlays/libdscp/default.nix
index 47103fd3..9e82f20e 100644
--- a/overlays/libdscp/default.nix
+++ b/overlays/libdscp/default.nix
@@ -8,4 +8,22 @@
 
     makeFlags = [ "PREFIX=$(out)" ];
   };
+
+  dscp = prev.writeShellApplication {
+    name = "dscp";
+
+    text = ''
+      export LD_PRELOAD
+      LD_PRELOAD=''${LD_PRELOAD:+':'$LD_PRELOAD':'}
+      if [[ $LD_PRELOAD != *':'''${final.libdscp}/lib/libdscp.so''':'* ]]; then
+          LD_PRELOAD='${final.libdscp}/lib/libdscp.so'$LD_PRELOAD
+      fi
+      LD_PRELOAD=''${LD_PRELOAD#':'}
+      LD_PRELOAD=''${LD_PRELOAD%':'}
+
+      : "''${DSCP:=0}"
+
+      exec -- "$@"
+    '';
+  };
 }