feat(nix/prog): add hledger to manage finance

nix/home.nix

@@ -13,6 +13,7 @@ in
     ./progs/nvim.nix
     ./progs/exa.nix
     ./progs/zoxide.nix
+    ./progs/hledger.nix
   ];
 
   targets.genericLinux.enable = true;
@@ -67,6 +68,9 @@ in
     # email manager
     himalaya.enable = true;
 
+    # finance manager
+    hledger.enable = true;
+
     # editor
     nvim = {
       enable = true;

nix/progs/hledger.nix

@@ -0,0 +1,46 @@
+{ lib, config, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.progs.hledger;
+  hledgerAliases = {
+    # TODO: add aliases for business and family accounts
+  };
+in
+{
+  options.progs.hledger = {
+    enable = mkOption {
+      type = types.bool;
+      default = false;
+      description = "Add and configure hledger tool to manage finance";
+    };
+  };
+  
+  config = mkIf cfg.enable {
+    home.packages = with pkgs; [
+      hledger
+      hledger-ui
+    ];
+
+    home.file = {
+      "finance/commodities.journal".text = ''
+        ; Fiat currencies
+        commodity RUB 1000.00
+        commodity $1000.00
+
+        ; Investment commodities
+
+        ; Cryptocurrencies
+
+        ; Other
+
+        ; Default commodity
+        D RUB 1000.00
+      '';
+    };
+
+    programs.zsh.shellAliases = mkIf config.shell.zsh.enable hledgerAliases;
+  };
+}
+