.devcontainer/devcontainer.json


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{
  "name": "nixpkgs",
  "image": "mcr.microsoft.com/devcontainers/universal:2-linux",
  "features": {
    "ghcr.io/devcontainers/features/nix:1": {
      // fails in the devcontainer sandbox, enable sandbox via config instead
      "multiUser": false,
      "packages": "nixpkgs.nixd,nixpkgs.nixfmt-rfc-style",
      "useAttributePath": true,
      "extraNixConfig": "experimental-features = nix-command flakes,sandbox = true"
    }
  },
  "customizations": {
    "vscode": {
      "extensions": [
        "jnoortheen.nix-ide"
      ],
      "settings": {
        "[nix]": {
            "editor.formatOnSave": true
        },
        "nix.enableLanguageServer": true,
        "nix.serverPath": "nixd"
      }
    }
  },
  "remoteEnv": {
    "NIXPKGS": "/workspaces/nixpkgs"
  }
}