chore(deps): bump actions/checkout from 4 to 6

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v4...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/build.yml

@@ -41,7 +41,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
     - name: Install nix
       uses: cachix/install-nix-action@v31
       with:

flake.nix

@@ -19,22 +19,5 @@
           lib.filterAttrs
             (_: v: lib.isDerivation v)
             self.legacyPackages.${system});
-
-      devShells.x86_64-linux.slippi =
-        let
-          pkgs = import inputs.nixpkgs { system = "x86_64-linux"; };
-        in self.packages.x86_64-linux.slippi-launcher.env.overrideAttrs
-          (final: prev: {
-            shellHook =
-              builtins.replaceStrings
-                ["exec \"\${cmd[@]}\""]
-                [''
-                  echo "''${cmd[-1]}"
-                  unset cmd[-1]
-                  cmd+=("$SHELL")
-                  exec "''${cmd[@]}"
-                '']
-                prev.shellHook;
-          });
     };
 }

pkgs/quiver/default.nix

@@ -0,0 +1,65 @@
+{ stdenv, fetchNpmDeps, fetchFromGitHub, fetchzip, fetchurl, lib, imagemagick, nodejs_20 }:
+
+let
+  vendoredKatex = fetchzip {
+    url = "https://github.com/KaTeX/KaTeX/releases/download/v0.16.9/katex.zip";
+    hash = "sha256-Nca52SW4Q0P5/fllDFQEaOQyak7ojCs0ShlqJ1mWZOM=";
+  };
+  vendoredWorkbox = fetchurl {
+    url = "https://storage.googleapis.com/workbox-cdn/releases/7.0.0/workbox-window.prod.mjs";
+    hash = "sha256-YR3m/DqqF+yahPQAk/2k0yRmdoYtQNBEHsL6fQTDmlc=";
+  };
+  vendoredWorkboxMap = fetchurl {
+    url = "https://storage.googleapis.com/workbox-cdn/releases/7.0.0/workbox-window.prod.mjs.map";
+    hash = "sha256-tUBiVoiKi3OCT+wctUYl0FVnT7StsGBDx7EzculcF5I=";
+  };
+  rev = "9872f3f9265f92643387239e76042c8d3ffeb410";
+in stdenv.mkDerivation (final: {
+  pname = "quiver";
+  version = lib.substring 0 7 rev;
+  inherit vendoredKatex vendoredWorkbox vendoredWorkboxMap;
+  src = fetchFromGitHub {
+    owner = "varkor";
+    repo = "quiver";
+    inherit rev;
+    hash = "sha256-wSyCzUSLUL5nzUe5E4RdWv44WGd4C9WO6udkKY9cyBs=";
+  };
+  npmDeps = fetchNpmDeps {
+    src = "${final.src}/service-worker";
+    hash = "sha256-xlww7Yfle58Qdwn/IcA6E6Fy7ZvH/ltKdlk6hvcC4UM=";
+  };
+  preBuild = ''
+    cp -r $vendoredKatex src/KaTeX
+    mkdir src/Workbox
+    cp $vendoredWorkbox src/Workbox/workbox-window.prod.mjs
+    cp $vendoredWorkboxMap src/Workbox/workbox-window.prod.mjs.map
+  '';
+  buildPhase = ''
+    runHook preBuild
+    pushd service-worker
+    npm install --cache $npmDeps
+    node build.js
+    popd
+    runHook postBuild
+  '';
+  installPhase = ''
+    runHook preInstall
+    mkdir -p $out/opt
+    cp -r src $out/opt/quiver
+    runHook postInstall
+  '';
+  nativeBuildInputs = [
+    imagemagick
+  ];
+  buildInputs = [
+    nodejs_20
+  ];
+  meta = {
+    description = ''
+      A modern commutative diagram editor for the web. 
+    '';
+    homepage = "https://q.uiver.app/";
+    license = lib.licenses.mit;
+    platforms = lib.platforms.unix;
+  };
+})