flake: update nixpkgs pin 23.11->24.05 (+ boehmgc compat changes)

The boehmgc changes are bundled into this commit because doing otherwise
would require an annoying dance of "adding compatibility for < 8.2.6 and
>= 8.2.6" then updating the pin then removing the (now unneeded)
compatibility. It doesn't seem worth the trouble to me given the low
complexity of said changes.

Rebased coroutine-sp-fallback.diff patch taken from https://github.com/NixOS/nixpkgs/pull/317227

Change-Id: I8c590e9fe25c0f566d0cfeacb96d8cf50abf12e8

1 files changed, 1 insertions, 1 deletions

diff --git a/flake.nix b/flake.nix
index fd8b7995e..ebb3e38ef 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,7 +2,7 @@
   description = "The purely functional package manager";
 
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-23.11-small";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.05-small";
     nixpkgs-regression.url = "github:NixOS/nixpkgs/215d4d0fd80ca5163643b03a33fde804a29cc1e2";
     pre-commit-hooks = {
       url = "github:cachix/git-hooks.nix";