flake.nix: temporarily pin nixpkgs version

This is the last bump of the nixpkgs-unstable channel before the
DocBookalypse.

1 files changed, 4 insertions, 3 deletions

diff --git a/flake.lock b/flake.lock
index 2ce4242..61540b7 100644
--- a/flake.lock
+++ b/flake.lock
@@ -2,15 +2,16 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1668650906,
-        "narHash": "sha256-JuiYfDO23O8oxUUOmhQflmOoJovyC5G4RjcYQMQjrRE=",
+        "lastModified": 1687130670,
+        "narHash": "sha256-VKTdfsJe7sVTTqxTd3eRGPoUgEeJKD+kwS86B6TY874=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "3a86856a13c88c8c64ea32082a851fefc79aa700",
+        "rev": "c1bca7fe84c646cfd4ebf3482c0e6317a0b13f22",
         "type": "github"
       },
       "original": {
         "id": "nixpkgs",
+        "rev": "c1bca7fe84c646cfd4ebf3482c0e6317a0b13f22",
         "type": "indirect"
       }
     },