workspace: use direnv instead of corepack

.envrc

@@ -0,0 +1 @@
+use flake

.github/workflows/build.yml

@@ -21,8 +21,6 @@ jobs:
       with:
         submodules: recursive
         fetch-depth: 2
-    - name: Setup Corepack
-      run: corepack enable
     - name: Set up Node
       uses: actions/setup-node@v4
       with:
@@ -49,6 +47,7 @@ jobs:
       run: |
         git config --global user.name undefined
         git config --global user.email i@undefined.moe
+        yarn set version stable
         yarn
         yarn dedupe
       env:

.gitignore

@@ -16,6 +16,7 @@ benchmark.json
 globalConfig.json
 *.out
 .clinic/
+.direnv/
 .yarn/cache
 .yarn/build-state.yml
 .yarn/unplugged

flake.lock

@@ -1,12 +1,30 @@
 {
   "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1739446958,
-        "narHash": "sha256-+/bYK3DbPxMIvSL4zArkMX0LQvS7rzBKXnDXLfKyRVc=",
+        "lastModified": 1766902085,
+        "narHash": "sha256-coBu0ONtFzlwwVBzmjacUQwj3G+lybcZ1oeNSQkgC0M=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "2ff53fe64443980e139eaa286017f53f88336dd0",
+        "rev": "c0b0e0fddf73fd517c3471e546c0df87a42d53f4",
         "type": "github"
       },
       "original": {
@@ -18,8 +36,24 @@
     },
     "root": {
       "inputs": {
+        "flake-utils": "flake-utils",
         "nixpkgs": "nixpkgs"
       }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
     }
   },
   "root": "root",

flake.nix

@@ -1,26 +1,44 @@
 {
   description = "Hydro development environment";
 
-  inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+  inputs.flake-utils.url = "github:numtide/flake-utils";
+
+  outputs = { self, nixpkgs, flake-utils }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = nixpkgs.legacyPackages.${system};
+        composeConfig = {
+          version = "0.5";
+          processes = {
+            hydro = {
+              command = "${pkgs.nodejs}/bin/node node_modules/.bin/hydrooj --debug --port=2333";
+              is_interactive = true;
+            };
+            go-judge = {
+              command = "${pkgs.go-judge}/bin/go-judge";
+            };
+            webpack = {
+              command = "${pkgs.yarn-berry}/bin/yarn build:ui:dev";
+            };
+          };
+        };
+      in
+      {
+        apps.default = {
+          type = "app";
+          program = "${pkgs.writeShellScript "compose.sh" ''
+            ${pkgs.process-compose}/bin/process-compose -f ${pkgs.writeText "process-compose.yml" (builtins.toJSON composeConfig)}
+          ''}";
         };
 
-  outputs = { self, nixpkgs }: 
-    let
-      system = "x86_64-linux";
-      pkgs = nixpkgs.legacyPackages.${system};
-    in {
-      packages.${system}.default = pkgs.hello;
-      devShells.${system}.default = pkgs.mkShell {
-        buildInputs = [
-          pkgs.nodejs
-          pkgs.yarn-berry
-          pkgs.pm2
-          pkgs.git
-          pkgs.gcc
-          pkgs.go-judge
-          pkgs.mongodb-ce
+        devShells.default = pkgs.mkShell {
+          buildInputs = with pkgs; [
+            nodejs
+            yarn-berry
+            gcc
+            go-judge
           ];
         };
-    };
+      });
 }

package.json

@@ -65,6 +65,5 @@
     "resolutions": {
         "mongodb": "^7.0.0",
         "@types/express-serve-static-core": "patch:@types/express-serve-static-core@npm%3A4.19.6#~/.yarn/patches/@types-express-serve-static-core-npm-4.19.6-cc0017aaf4.patch"
-    },
-    "packageManager": "yarn@4.10.3"
+    }
 }