feat: openweathermap tool and i3status block

configs/default.nix

@@ -229,6 +229,7 @@ in {
     ./packages
     ./power-action.nix
     ./printing.nix
+    ./openweathermap.nix
     ./wallpaper.nix
     ./redshift.nix
     ./retiolum.nix

configs/openweathermap.nix

@@ -0,0 +1,19 @@
+{ pkgs, lib, ... }:
+let
+  openweathermap-repo = pkgs.fetchFromGitHub {
+    owner = "ip1981";
+    repo = "openweathermap";
+    rev = "9cfef7b14ac5af7109449b54b1cb352b4c76167a";
+    sha256 = "0sm43wicvw2fy7nq65s8vch6jjb5bszqr4ilnhibayamj4jcpw53";
+  };
+  openweathermap = pkgs.haskellPackages.callCabal2nix "openweathermap" openweathermap-repo {};
+  openweathermap-key = lib.strings.fileContents <secrets/openweathermap.key>;
+in {
+  nixpkgs.config.packageOverrides = pkgs: {
+    weather = pkgs.writers.writeDashBin "weather" ''
+      ${openweathermap}/bin/openweathermap --api-key ${openweathermap-key} "$@"
+    '';
+  };
+
+  environment.systemPackages = [ pkgs.weather ];
+}