error: … while evaluating a branch condition at «string»:25:5: 24| v: 25| if !builtins.isAttrs v || isDrv v then | ^ 26| v … in the left operand of the OR (||) operator at «string»:25:28: 24| v: 25| if !builtins.isAttrs v || isDrv v then | ^ 26| v (stack trace truncated; use '--show-trace' to show the full, detailed trace) error: attribute 'armv6l-linux' missing at «github:NixOS/nixpkgs/37b97ae3dd714de9a17923d004a2c5b5543dfa6d?narHash=sha256-wdYD41UwNwPhTdMaG0AIe7fE1bAdyHe6bB4HLUqUvck%3D»/pkgs/development/compilers/oraclejdk/jdk-linux-base.nix:83:16: 82| url = "http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html"; 83| sha256 = sha256.${stdenv.hostPlatform.system}; | ^ 84| }; Did you mean armv7l-linux?