Update various Nix things (#333)

 - Update HLS to 2.2.0.0 and cabal-fmt to 0.1.7
 - Bump flake inputs and update some references
- Includes fix for
input-output-hk/haskell.nix#2042 which
@jorisdral recently ran into

Author: amesgen

flake.lock

@@ -10,7 +10,7 @@
   };
   inputs = {
     nixpkgs.follows = "haskellNix/nixpkgs-unstable";
-    flake-utils.follows = "haskellNix/flake-utils";
+    flake-utils.url = "github:numtide/flake-utils";
     haskellNix = {
       url = "github:input-output-hk/haskell.nix";
       inputs.hackage.follows = "hackageNix";
@@ -28,7 +28,7 @@
       inputs.nixpkgs.follows = "nixpkgs";
     };
     flake-compat = {
-      url = "github:edolstra/flake-compat";
+      url = "github:nix-community/flake-compat";
       flake = false;
     };
   };

flake.nix

@@ -21,7 +21,7 @@ hsPkgs.shellFor {
   # This is the place for tools that are required to be built with the same GHC
   # version as used in hsPkgs.
   tools = lib.mapAttrs (_: t: t // { index-state = pkgs.tool-index-state; }) {
-    haskell-language-server = { version = "2.0.0.1"; };
+    haskell-language-server = { version = "2.2.0.0"; };
   };
 
   shellHook = ''

nix/shell.nix

@@ -1,7 +1,7 @@
 inputs: final: prev:
 
 let
-  tool-index-state = "2023-07-05T00:00:00Z";
+  tool-index-state = "2023-09-04T00:00:00Z";
   tool = name: version: other:
     final.haskell-nix.tool final.hsPkgs.args.compiler-nix-name name ({
       version = version;
@@ -37,7 +37,7 @@ in
 
   stylish-haskell = tool "stylish-haskell" "0.14.4.0" { };
 
-  cabal-fmt = tool "cabal-fmt" "0.1.6" { };
+  cabal-fmt = tool "cabal-fmt" "0.1.7" { };
 
   scriv = prev.scriv.overrideAttrs (_: {
     version = "1.2.0-custom-iog";