full rewrite, first commit

modules/home/tools/git/default.nix

@@ -0,0 +1,49 @@
+{
+  lib,
+  config,
+  pkgs,
+  namespace,
+  ...
+}:
+let
+  inherit (lib) types mkEnableOption mkIf;
+  inherit (lib.${namespace}) mkOpt enabled;
+
+  cfg = config.${namespace}.tools.git;
+  user = config.${namespace}.user;
+in
+{
+  options.${namespace}.tools.git = {
+    enable = mkEnableOption "Git";
+    userName = mkOpt types.str "Philipp" "The name to configure git with.";
+    userEmail = mkOpt types.str "philipp@boehm.sh" "The email to configure git with.";
+    signingKey = mkOpt types.str "AA5E5A3C" "The key ID to sign commits with.";
+    signByDefault = mkOpt types.bool true "Whether to sign commits by default.";
+  };
+
+  config = mkIf cfg.enable {
+    programs.git = {
+      enable = true;
+      inherit (cfg) userName userEmail;
+      lfs = enabled;
+      signing = {
+        key = cfg.signingKey;
+        inherit (cfg) signByDefault;
+      };
+      extraConfig = {
+        init = {
+          defaultBranch = "main";
+        };
+        pull = {
+          rebase = true;
+        };
+        push = {
+          autoSetupRemote = true;
+        };
+        core = {
+          whitespace = "trailing-space,space-before-tab";
+        };
+      };
+    };
+  };
+}