add update lock action

.forgejo/workflows/update-lock.yml

@@ -0,0 +1,31 @@
+name: Update flake.lock
+
+on:
+  workflow_dispatch:
+
+jobs:
+  update_flake_lock:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Install Nix
+        uses: DeterminateSystems/nix-installer-action@v14
+
+      - name: Set git config
+        run: |
+          git config --global user.name "ukubot"
+          git config --global user.email "bot@uku.moe"
+
+      - name: Update lockfile
+        run: |
+          export BRANCH="update-lock-$(date -I)"
+          git checkout -b "$BRANCH"
+          nix flake update --commit-lock-file
+          git push origin "$BRANCH"
+
+      - name: Create Pull Request
+        run: |
+          echo EXPLODE

flake.lock

@@ -0,0 +1,48 @@
+{
+  "nodes": {
+    "flake-parts": {
+      "inputs": {
+        "nixpkgs-lib": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1730504689,
+        "narHash": "sha256-hgmguH29K2fvs9szpq2r3pz2/8cJd2LPS+b4tfNFCwE=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "506278e768c2a08bec68eb62932193e341f55c90",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1730785428,
+        "narHash": "sha256-Zwl8YgTVJTEum+L+0zVAWvXAGbWAuXHax3KzuejaDyo=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "4aa36568d413aca0ea84a1684d2d46f55dbabad7",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-parts": "flake-parts",
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,34 @@
+{
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+
+    flake-parts = {
+      url = "github:hercules-ci/flake-parts";
+      inputs.nixpkgs-lib.follows = "nixpkgs";
+    };
+  };
+
+  outputs = {
+    self,
+    flake-parts,
+    ...
+  } @ inputs:
+    flake-parts.lib.mkFlake {inherit inputs;} {
+      systems = ["x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin"];
+
+      perSystem = {
+        lib,
+        pkgs,
+        self',
+        ...
+      }: {
+        devShells.default = with pkgs;
+          mkShell {
+            packages = [clippy rustfmt rust-analyzer redis xh];
+            RUST_SRC_PATH = "${pkgs.rustPlatform.rustLibSrc}";
+          };
+
+        formatter = pkgs.alejandra;
+      };
+    };
+}