Update nixpkgs to 23.05, improve direnv integration and flake devShell (#17217)

.envrc

@@ -1 +1,4 @@
+if ! has nix_direnv_version || ! nix_direnv_version 2.3.0; then
+    source_url "https://raw.githubusercontent.com/nix-community/nix-direnv/2.3.0/direnvrc" "sha256-Dmd+j63L84wuzgyjITIfSxSD57Tx7v51DMxVZOsiUD8="
+fi
 use flake

flake.lock

@@ -5,11 +5,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1681202837,
-        "narHash": "sha256-H+Rh19JDwRtpVPAWp64F+rlEtxUWBAQW28eAi3SRSzg=",
+        "lastModified": 1685518550,
+        "narHash": "sha256-o2d0KcvaXzTrPRIo0kOLV0/QXHhDQ5DTi+OxcjO8xqY=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "cfacdce06f30d2b68473a46042957675eebb3401",
+        "rev": "a1720a10a6cfe8234c0e93907ffe81be440f4cef",
         "type": "github"
       },
       "original": {
@@ -20,16 +20,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1683293859,
-        "narHash": "sha256-4BTV7T76XwAfnHJ0z6hR0tk2LFxoXf40JfKzmMb2xfY=",
+        "lastModified": 1686226347,
+        "narHash": "sha256-XSe3DXyslXbEMkkPEAZRqNuab5dZbFndpt30BFk5/Hw=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "ef47d4daa93372ae33c0b249d392e90408e06b96",
+        "rev": "5c4b536bc7e94fec9ea542ffde996646a77f33e5",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "release-22.11",
+        "ref": "release-23.05",
         "repo": "nixpkgs",
         "type": "github"
       }

flake.nix

@@ -1,13 +1,13 @@
 {
+  description = "Development environment for Space Station 14";
 
-  inputs.nixpkgs.url = "github:NixOS/nixpkgs/release-22.11";
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/release-23.05";
   inputs.flake-utils.url = "github:numtide/flake-utils";
 
-  outputs = { self, nixpkgs, flake-utils, ... }:
-    flake-utils.lib.simpleFlake {
-      inherit self nixpkgs;
-      name = "space-station-14-devshell";
-      shell = ./shell.nix;
-    };
-
+  outputs = { self, nixpkgs, flake-utils }:
+    flake-utils.lib.eachDefaultSystem (system: let
+      pkgs = nixpkgs.legacyPackages.${system};
+    in {
+      devShells.default = import ./shell.nix { inherit pkgs; };
+    });
 }

shell.nix

@@ -7,6 +7,7 @@ let
     SDL2
     libGL
     openal
+    glibc
     freetype
     fluidsynth
     soundfont-fluid