Remove hlint from nix CI

.github/workflows/check-hlint.yml

@@ -0,0 +1,31 @@
+name: Check HLint
+
+on:
+  push:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    defaults:
+      run:
+        shell: bash
+
+    steps:
+
+    - name: Install Nix
+      uses: cachix/install-nix-action@v18
+      with:
+        github_access_token: ${{ secrets.GITHUB_TOKEN }}
+        extra_nix_config: |
+          access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
+          experimental-features = nix-command flakes
+          allow-import-from-derivation = true
+          substituters = https://cache.nixos.org https://hydra.iohk.io
+          trusted-public-keys = iohk.cachix.org-1:DpRUyj7h7V830dp/i6Nti+NEO2/nhblbov/8MW7Rqoo= hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ= cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=
+
+    - uses: actions/checkout@v2
+
+    - name: Run hlint
+      run: |
+        nix build '.#checks/hlint')

nix/pkgs.nix

@@ -11,11 +11,6 @@ final: prev: with final; {
 
   cabal = haskell-nix.cabal-install.${compiler-nix-name};
 
-  hlint = haskell-nix.tool compiler-nix-name "hlint" {
-    version = "3.2.7";
-    index-state = "2022-12-11T00:00:00Z";
-  };
-
   ghcid = haskell-nix.tool compiler-nix-name "ghcid" {
     version = "0.8.7";
     index-state = "2022-12-11T00:00:00Z";

nix/workbench/shell.nix

@@ -101,7 +101,6 @@ in project.shellFor {
     sqlite-interactive
     tmux
     pkgs.git
-    pkgs.hlint
     pkgs.moreutils
     pkgs.pstree
     pkgs.time