diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 2bfe8b4..5e5be2f 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -7,27 +7,13 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2.4.0
-    - uses: cachix/install-nix-action@v20
-      with:
-        nix_path: nixpkgs=channel:nixos-unstable
-    - run: |
-        mkdir -p $HOME/.config/nix/
-        echo "substituters = https://cache.nixos.org https://hydra.iohk.io" >> $HOME/.config/nix/nix.conf
-        echo "trusted-public-keys = cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY= hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ=" >> $HOME/.config/nix/nix.conf
-    - uses: cachix/cachix-action@v12
-      with:
-        name: simmsb-calamity
-        authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
-    - name: Cache Nix dependencies
-      run: |
-        nix develop -j 4 -c echo
+    - name: Install Nix
+      uses: DeterminateSystems/nix-installer-action@v4
+    - name: Run the Magic Nix Cache
+      uses: DeterminateSystems/magic-nix-cache-action@v2
     - name: Build 🔨
-      id: build
       run: |
-        nix build -j auto -L
+        nix build .#calamity -L
     - name: Flake checks 🧪
       run: |
-        # Because 'nix flake check' is not system-aware
-        # See https://srid.ca/haskell-template/checks
-        nix run nixpkgs#sd 'systems = nixpkgs.lib.systems.flakeExposed' 'systems = [ "x86_64-linux" ]' flake.nix
-        nix flake check -L
+        nix --option sandbox false build .#check -L
diff --git a/bot/bot.cabal b/bot/bot.cabal
index 053d86f..f1d362f 100644
--- a/bot/bot.cabal
+++ b/bot/bot.cabal
@@ -1,17 +1,17 @@
-cabal-version:   2.0
-name:            bot
-version:         0.0.0
-license:         MIT
-copyright:       2019 Ben Simms
-maintainer:      ben@bensimms.moe
-author:          Ben Simms
-tested-with:     GHC ==8.10.7
-homepage:        https://github.com/nitros12/calamity-bot
-bug-reports:     https://github.com/nitros12/calamity-bot/issues
-synopsis:        A discord bot
-description:     A discord bot
-category:        Bots
-build-type:      Simple
+cabal-version: 2.0
+name:          bot
+version:       0.0.0
+license:       MIT
+copyright:     2019 Ben Simms
+maintainer:    ben@bensimms.moe
+author:        Ben Simms
+tested-with:   GHC ==8.10.7
+homepage:      https://github.com/nitros12/calamity-bot
+bug-reports:   https://github.com/nitros12/calamity-bot/issues
+synopsis:      A discord bot
+description:   A discord bot
+category:      Bots
+build-type:    Simple
 
 source-repository head
   type:     git
diff --git a/calamity/calamity.cabal b/calamity/calamity.cabal
index efdb1bc..3321126 100644
--- a/calamity/calamity.cabal
+++ b/calamity/calamity.cabal
@@ -195,9 +195,9 @@ library
     , calamity-commands     >=0.4     && <0.5
     , colour                >=2.3.5   && <2.4
     , concurrent-extra      >=0.7     && <0.8
+    , containers            >=0.6     && <0.7
     , crypton-connection    >=0.2.6   && <0.4
     , crypton-x509-system   >=1.6.6   && <1.7
-    , containers            >=0.6     && <0.7
     , data-default-class    >=0.1     && <0.2
     , data-flags            >=0.0.3   && <0.1
     , deepseq               >=1.4.4.0 && <2
diff --git a/flake.lock b/flake.lock
index f313ab1..255225e 100644
--- a/flake.lock
+++ b/flake.lock
@@ -1,5 +1,20 @@
 {
   "nodes": {
+    "check-flake": {
+      "locked": {
+        "lastModified": 1683070462,
+        "narHash": "sha256-FrfgxQaMGIMGGgT1K0jbGEiXqZoIyyUR8jzuJ03Cf00=",
+        "owner": "srid",
+        "repo": "check-flake",
+        "rev": "24ba082179435ce37085c06ffcfcac6d4c570674",
+        "type": "github"
+      },
+      "original": {
+        "owner": "srid",
+        "repo": "check-flake",
+        "type": "github"
+      }
+    },
     "flake-parts": {
       "inputs": {
         "nixpkgs-lib": "nixpkgs-lib"
@@ -120,6 +135,7 @@
     },
     "root": {
       "inputs": {
+        "check-flake": "check-flake",
         "flake-parts": "flake-parts",
         "flake-root": "flake-root",
         "gitignore": "gitignore",
diff --git a/flake.nix b/flake.nix
index cbdff77..b21faa0 100644
--- a/flake.nix
+++ b/flake.nix
@@ -10,6 +10,7 @@
     flake-parts.url = "github:hercules-ci/flake-parts";
 
     haskell-flake.url = "github:srid/haskell-flake";
+    check-flake.url = "github:srid/check-flake";
 
     treefmt-nix.url = "github:numtide/treefmt-nix";
     treefmt-nix.inputs.nixpkgs.follows = "nixpkgs";
@@ -28,10 +29,11 @@
         inputs.haskell-flake.flakeModule
         inputs.treefmt-nix.flakeModule
         inputs.flake-root.flakeModule
+        inputs.check-flake.flakeModule
       ];
       perSystem = { self', lib, config, pkgs, ... }: {
         haskellProjects.default = {
-          basePackages = pkgs.haskell.packages.ghc944; 
+          basePackages = pkgs.haskell.packages.ghc944;
 
           packages = {
             crypton-connection.source = "0.3.1";