error: … while calling the 'derivationStrict' builtin at «nix-internal»/derivation-internal.nix:37:12: 36| 37| strict = derivationStrict drvAttrs; | ^ 38| … while evaluating derivation 'aperant-2.7.6' whose name attribute is located at «github:NixOS/nixpkgs/35d3407a3816f3b341d8cf1d60abaf2b7b8166ac?narHash=sha256-BoYPdqk6jlKXy%2BDyUzyGV/CtRGfAhk2MmIgBhsemTGI%3D»/pkgs/stdenv/generic/make-derivation.nix:651:11 … while evaluating attribute 'installPhase' of derivation 'aperant-2.7.6' at /var/lib/nixbot/worktrees/71-ca6b10637407-4c3ca66d/packages/aperant/package.nix:55:3: 54| 55| installPhase = '' | ^ 56| runHook preInstall (stack trace truncated; use '--show-trace' to show the full, detailed trace) error: Refusing to evaluate package 'electron-40.10.5' in /nix/store/2gi66ywhbj66ssbz5bhgibzafa15m7zy-source/pkgs/development/tools/electron/binary/generic.nix:50 because it is marked as insecure Known issues: - Electron version 40.10.5 is EOL You can install it anyway by allowing this package, using the following methods: a) To temporarily allow all insecure packages, you can use an environment variable for a single invocation of the nix tools: $ export NIXPKGS_ALLOW_INSECURE=1 Note: When using `nix shell`, `nix build`, `nix develop`, etc with a flake, then pass `--impure` in order to allow use of environment variables. b) for `nixos-rebuild` you can add ‘electron-40.10.5’ to `nixpkgs.config.permittedInsecurePackages` in the configuration.nix, like so: { nixpkgs.config.permittedInsecurePackages = [ "electron-40.10.5" ]; } c) For `nix-env`, `nix-build`, `nix-shell` or any other Nix command you can add ‘electron-40.10.5’ to `permittedInsecurePackages` in ~/.config/nixpkgs/config.nix, like so: { permittedInsecurePackages = [ "electron-40.10.5" ]; }