From 7e49ce6fbd460147add286b409ae6e74de99cfa6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?F=C3=A9lix=20Baylac-Jacqu=C3=A9?= <felix@alternativebit.fr>
Date: Thu, 24 Nov 2022 16:45:28 +0100
Subject: [PATCH] Nix: add patched libglvnd overlay

---
 flake.nix            | 17 ++++++++++++-----
 overlays/nixpkgs.nix | 11 +++++++++++
 2 files changed, 23 insertions(+), 5 deletions(-)
 create mode 100644 overlays/nixpkgs.nix

diff --git a/flake.nix b/flake.nix
index 065de7d..df8ec87 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,5 +1,5 @@
 {
-  description = "Gluing native OpenGL drivers";
+  description = "Gluing host OpenGL drivers to a Nix-built binary";
   inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
   outputs =
     { self
@@ -11,12 +11,18 @@
         "aarch64-linux"
       ];
       forAllSystems = f: nixpkgs.lib.genAttrs systems (system: f system);
+      pkgs = system: import nixpkgs {
+        inherit system;
+        overlays = [ self.overlays.default ];
+      };
     in
     {
-      defaultPackage = forAllSystems (system:
-        import ./default.nix {
-          pkgs = import nixpkgs { inherit system; };
-        });
+      defaultPackage = forAllSystems (system: import ./default.nix { pkgs = pkgs system; });
+
+      overlays.default = import ./overlays/nixpkgs.nix;
+
+      legacyPackages = forAllSystems (system: (pkgs system));
+
       devShell = forAllSystems (system:
         nixpkgs.legacyPackages.${system}.callPackage ./shell.nix { }
       );
@@ -24,5 +30,6 @@
       formatter = forAllSystems (system:
         nixpkgs.legacyPackages.${system}.nixpkgs-fmt
       );
+
     };
 }
diff --git a/overlays/nixpkgs.nix b/overlays/nixpkgs.nix
new file mode 100644
index 0000000..a575913
--- /dev/null
+++ b/overlays/nixpkgs.nix
@@ -0,0 +1,11 @@
+self: super:
+{
+  libglvnd = super.libglvnd.overrideAttrs (old: {
+    src = super.fetchFromGitHub {
+      owner = "NinjaTrappeur";
+      repo = "libglvnd";
+      rev = "f4dff011f78ecd5a69871d4a8ddf3c742de5f621";
+      sha256 = "sha256-57awDiR9DaFTGe8J4ed89Xm3Fc4/OM6qflsuHqx9mxE=";
+    };
+  });
+}