flake: Use nixpkgs 24.11

nixpkgs 24.11 changes how we access xonsh yet again
and updates clang.

Unfortunately, clang 18 produces significantly more
warnings on existing code that is challenging to fix.
Make sure that doesn't error when we're running
`-Werror` builds.

n.b. I had to change the "SSL certificate problem: self-signed
certificate" to the old error prior to the improved libcurl errors,
since what is presumably a difference in which TLS library is used has
cropped up between releases? Either way the curl error buffer is empty.
Seems like we aggressively cannot do anything about this.

Co-authored-by: eldritch horrors <pennae@lix.systems>

Change-Id: If0141a46a8b445a0e7d6f86f939e8c8e03569bf5

flake.lock

@@ -34,16 +34,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1735651292,
-        "narHash": "sha256-YLbzcBtYo1/FEzFsB3AnM16qFc6fWPMIoOuSoDwvg9g=",
+        "lastModified": 1733348545,
+        "narHash": "sha256-b4JrUmqT0vFNx42aEN9LTWOHomkTKL/ayLopflVf81U=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "0da3c44a9460a26d2025ec3ed2ec60a895eb1114",
+        "rev": "9ecb50d2fae8680be74c08bb0a995c5383747f89",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixos-24.05-small",
+        "ref": "nixos-24.11-small",
         "repo": "nixpkgs",
         "type": "github"
       }
@@ -67,11 +67,11 @@
     "pre-commit-hooks": {
       "flake": false,
       "locked": {
-        "lastModified": 1721042469,
-        "narHash": "sha256-6FPUl7HVtvRHCCBQne7Ylp4p+dpP3P/OYuzjztZ4s70=",
+        "lastModified": 1733318908,
+        "narHash": "sha256-SVQVsbafSM1dJ4fpgyBqLZ+Lft+jcQuMtEL3lQWx2Sk=",
         "owner": "cachix",
         "repo": "git-hooks.nix",
-        "rev": "f451c19376071a90d8c58ab1a953c6e9840527fd",
+        "rev": "6f4e2a2112050951a314d2733a994fbab94864c6",
         "type": "github"
       },
       "original": {

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-24.11-small";
     nixpkgs-regression.url = "github:NixOS/nixpkgs/215d4d0fd80ca5163643b03a33fde804a29cc1e2";
     pre-commit-hooks = {
       url = "github:cachix/git-hooks.nix";
@@ -349,10 +349,10 @@
                 name = "nixpkgs-lib-tests";
                 paths =
                   [ testWithNix ]
-                  # FIXME: This is disabled on darwin due to a nixpkgs bug https://github.com/NixOS/nixpkgs/issues/319147
-                  # After that is fixed, it should be restored to use lib/tests/release.nix as before, rather than this reimplementation.
+                  # NOTE: nixpkgs 24.11 is being ... *creative*, and requires this dance to override
+                  # the evaluator used for the test. it will break again in the future, don't worry.
                   ++ lib.optionals pkgs.stdenv.isLinux [
-                    (import (nixpkgs + "/pkgs/test/release") { inherit pkgs lib nix; })
+                   (pkgs.callPackage "${nixpkgs}/ci/eval" { nixVersions.nix_2_24 = nix; }).attrpathsSuperset
                   ];
               }
             );

meson.build

@@ -480,6 +480,7 @@ add_project_arguments(
   # It would be nice for our headers to be idempotent instead.
   '-include', 'config.h',
   '-Wno-deprecated-declarations',
+  '-Wno-missing-field-initializers',
   '-Wimplicit-fallthrough',
   '-Werror=switch',
   '-Werror=switch-enum',

package.nix

@@ -427,7 +427,6 @@ stdenv.mkDerivation (finalAttrs: {
         just,
         nixfmt-rfc-style,
         skopeo,
-        xonsh,
 
         # Lix specific packages
         pre-commit-checks,
@@ -447,7 +446,7 @@ stdenv.mkDerivation (finalAttrs: {
             p.requests
             p.xdg-base-dirs
             p.packaging
-            (p.toPythonModule xonsh.passthru.unwrapped)
+            p.xonsh
           ]
         );
         pythonEnv = python3.withPackages pythonPackages;

tests/nixos/default.nix

@@ -12,6 +12,8 @@ let
       defaults = {
         nixpkgs.pkgs = nixpkgsFor.${system}.native;
         nix.checkAllErrors = false;
+        # nixos-option fails to build with lix and no tests use any of the tools
+        system.disableInstallerTools = true;
       };
       _module.args.nixpkgs = nixpkgs;
       _module.args.system = system;

tests/nixos/fetchurl.nix

@@ -76,7 +76,7 @@ in
     # Fetching from a server with an untrusted cert should fail.
     err = machine.fail("nix build --no-substitute --expr 'import <nix/fetchurl.nix> { url = \"https://bad/index.html\"; hash = \"sha256-rsBwZF/lPuOzdjBZN2E08FjMM3JHyXit0Xi2zN+wAZ8=\"; }' 2>&1")
     print(err)
-    assert "SSL certificate problem: self-signed certificate" in err or "SSL peer certificate or SSH remote key was not OK" in err
+    assert "SSL peer certificate or SSH remote key was not OK" in err
 
     # Fetching from a server with a trusted cert should work via environment variable override.
     machine.succeed("NIX_SSL_CERT_FILE=/tmp/cafile.pem nix build --no-substitute --expr 'import <nix/fetchurl.nix> { url = \"https://bad/index.html\"; hash = \"sha256-rsBwZF/lPuOzdjBZN2E08FjMM3JHyXit0Xi2zN+wAZ8=\"; }'")