temp: nixos unstable as flake input

Change-Id: I8009ca21a9a993448da569f2fa1b89155f84aac2

flake.lock

@@ -34,16 +34,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1721931987,
-        "narHash": "sha256-1Zg8LY0T5EfXtv0Kf4M6SFnjH7Eto4VV+EKJ/YSnhiI=",
+        "lastModified": 1728492678,
+        "narHash": "sha256-9UTxR8eukdg+XZeHgxW5hQA9fIKHsKCdOIUycTryeVw=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "e21630230c77140bc6478a21cd71e8bb73706fce",
+        "rev": "5633bcff0c6162b9e4b5f1264264611e950c8ec7",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixos-24.05-small",
+        "ref": "nixos-unstable",
         "repo": "nixpkgs",
         "type": "github"
       }

flake.nix

@@ -2,7 +2,7 @@
   description = "Lix: A modern, delicious implementation of the Nix package manager";
 
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.05-small";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
     nixpkgs-regression.url = "github:NixOS/nixpkgs/215d4d0fd80ca5163643b03a33fde804a29cc1e2";
     pre-commit-hooks = {
       url = "github:cachix/git-hooks.nix";

package.nix

@@ -33,6 +33,8 @@
   llvmPackages,
   lsof,
   # FIXME: remove default after dropping NixOS 24.05
+  # This default exists to cope with both having and not having
+  # https://github.com/NixOS/nixpkgs/pull/346945
   lowdown-unsandboxed ? lowdown,
   lowdown,
   mdbook,
@@ -489,7 +491,7 @@ stdenv.mkDerivation (finalAttrs: {
             p.requests
             p.xdg-base-dirs
             p.packaging
-            (p.toPythonModule xonsh.passthru.unwrapped)
+            p.xonsh
           ]
         );
         pythonEnv = python3.withPackages pythonPackages;