create packages flake

docker-compose.dev.yaml

@@ -13,6 +13,7 @@ services:
       - ./data/piston:/piston
     environment:
       - PISTON_REPO_URL=http://repo:8000/index
+      - PISTON_LOG_LEVEL=DEBUG
     tmpfs:
       - /piston/jobs:exec
 

packages/flake.lock

@@ -0,0 +1,41 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "locked": {
+        "lastModified": 1631561581,
+        "narHash": "sha256-3VQMV5zvxaVLvqqUrNz3iJelLw30mIVSfZmAaauM3dA=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "7e5bf3925f6fbdfaf50a2a7ca0be2879c4261d19",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1633356775,
+        "narHash": "sha256-UBhRo1qy8xpOGTrjf7r2SFcULkFM+Wn4kchxN1ToDxs=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "38501bec61c1e9447aa4ffc01ba07c40f4515327",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "type": "indirect"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

packages/flake.nix

@@ -0,0 +1,47 @@
+{
+  description = "Piston packages repo";
+  inputs.flake-utils.url = "github:numtide/flake-utils";
+
+  outputs = { self, nixpkgs, flake-utils }: 
+  let
+    system = "x86_64-linux";
+    pkgs = nixpkgs.legacyPackages.${system};
+    args = {
+      inherit pkgs;
+      piston = {
+      mkRuntime = {
+          language,
+          version,
+          runtime,
+          run,
+          compile? null,
+          aliases? []
+        }: let
+          packageName = "${runtime}-${language}";
+          compileFile = if compile != null then
+            pkgs.writeShellScript "compile" compile
+            else null;
+          runFile = pkgs.writeShellScript "run" run;
+          metadataFile = pkgs.writeText "metadata.json" (builtins.toJSON {
+            inherit language version runtime aliases;
+          });
+        in pkgs.runCommandNoCC packageName {}
+        (
+          ''
+            mkdir -p $out/piston
+            ln -s ${runFile} $out/piston/run
+            ln -s ${metadataFile} $out/piston/metadata.json
+          '' + (
+            if compileFile != null then
+            ''
+              ln -s ${compileFile} $out/piston/compile
+            '' else "")
+        );
+      };
+    };
+  in {
+    piston = {
+      "node-javascript" = import ./node-javascript.nix args;
+    };
+  };
+}

packages/node-javascript.nix

@@ -0,0 +1,17 @@
+{pkgs, piston}:
+piston.mkRuntime {
+    language = "javascript";
+    version = pkgs.nodejs.version;
+    runtime = "node";
+
+    aliases = [
+        "node-js"
+        "node-javascript"
+        "js"
+    ];
+
+    run = ''
+    ${pkgs.nodejs}/bin/node "$@"
+    '';
+
+}