1error:2 … while evaluating a branch condition3 at «string»:25:5:4 24| v:5 25| if !builtins.isAttrs v || isDrv v then6 | ^7 26| v89 … in the left operand of the OR (||) operator10 at «string»:25:28:11 24| v:12 25| if !builtins.isAttrs v || isDrv v then13 | ^14 26| v1516 … while evaluating definitions from `/nix/store/9iv83r72z5xwgylkwms1qip1ijnr6jqs-source/modules/transposition.nix':1718 … while evaluating definitions from `/nix/store/4pi761wvn6m4nlq882j5s2s2bgmx33vf-source/modules/checks/machines.nix, via option perSystem':1920 … while evaluating the option `system.build.toplevel':2122 … while evaluating definitions from `/nix/store/fv9q2q4cbd2adhnjvlvczjaqzyyw1fdk-source/nixos/modules/system/activation/top-level.nix':2324 … while evaluating the option `warnings':2526 … while evaluating definitions from `/nix/store/fv9q2q4cbd2adhnjvlvczjaqzyyw1fdk-source/nixos/modules/system/boot/systemd.nix':2728 … while evaluating the option `systemd.services.home-manager-cameron.serviceConfig':2930 … while evaluating definitions from `/nix/store/xnygwnm7n6j5rnnwb4dcp0i2hlwq5amj-source/nixos':3132 … while evaluating the option `home-manager.users.cameron.home.file."/home/cameron/.config/fontconfig/conf.d/10-hm-fonts.conf".source':3334 … while evaluating definitions from `/nix/store/xnygwnm7n6j5rnnwb4dcp0i2hlwq5amj-source/modules/misc/xdg':3536 … while evaluating the option `home-manager.users.cameron.xdg.configFile."fontconfig/conf.d/10-hm-fonts.conf".source':3738 … while evaluating definitions from `/nix/store/xnygwnm7n6j5rnnwb4dcp0i2hlwq5amj-source/modules/misc/fontconfig.nix':3940 … while evaluating the option `home-manager.users.cameron.fonts.fontconfig.configFile.fonts.source':4142 … while evaluating definitions from `/nix/store/xnygwnm7n6j5rnnwb4dcp0i2hlwq5amj-source/modules/misc/fontconfig.nix':4344 … while evaluating the option `home-manager.users.cameron.fonts.fontconfig.configFile.fonts.settings':4546 … while evaluating definitions from `/nix/store/xnygwnm7n6j5rnnwb4dcp0i2hlwq5amj-source/modules/misc/fontconfig.nix':4748 (stack trace truncated; use '--show-trace' to show the full, detailed trace)4950 error: Refusing to evaluate package 'tmate-unstable-2022-08-07' in /nix/store/fv9q2q4cbd2adhnjvlvczjaqzyyw1fdk-source/pkgs/by-name/tm/tmate/package.nix:55 because it is marked as insecure5152 Known issues:53 - There are no upstream releases since 2019-11.54 - CVE-2018-193875556 You can install it anyway by allowing this package, using the57 following methods:5859 a) To temporarily allow all insecure packages, you can use an environment60 variable for a single invocation of the nix tools:6162 $ export NIXPKGS_ALLOW_INSECURE=16364 Note: When using `nix shell`, `nix build`, `nix develop`, etc with a flake,65 then pass `--impure` in order to allow use of environment variables.6667 b) for `nixos-rebuild` you can add ‘tmate-unstable-2022-08-07’ to68 `nixpkgs.config.permittedInsecurePackages` in the configuration.nix,69 like so:7071 {72 nixpkgs.config.permittedInsecurePackages = [73 "tmate-unstable-2022-08-07"74 ];75 }7677 c) For `nix-env`, `nix-build`, `nix-shell` or any other Nix command you can add78 ‘tmate-unstable-2022-08-07’ to `permittedInsecurePackages` in79 ~/.config/nixpkgs/config.nix, like so:8081 {82 permittedInsecurePackages = [83 "tmate-unstable-2022-08-07"84 ];85 }