configure git via home-manager

contact addresses have been defined in non-public submodule

home/home.nix

@@ -321,4 +321,54 @@ in
   services.lorri.enable = true;
 
   fonts.fontconfig.enable = true;
+
+  programs.git =
+    let contacts = import ./secrets/contacts.nix;
+    in
+    {
+      enable = true;
+      includes = [
+        {
+          condition = "gitdir:~/Seafile/Studium/";
+          contents = {
+            user.name = contacts.realName;
+            user.email = contacts.uniMail;
+          };
+        }
+        {
+          condition = "gitdir:~/src/nixpkgs/";
+          contents = {
+            user.name = "Trolli Schmittlauch";
+            user.email = contacts.nixosMail;
+          };
+        }
+      ]
+      # set default name for several other common locations
+      ++ map
+        (dir: {
+          condition = "gitdir:${dir}";
+          contents = {
+            user.name = "Trolli Schmittlauch";
+            user.email = contacts.mainMail;
+          };
+        }) [ "~/src/" "~/bin/" "~/tmp/" "~/nixconfigs/" ];
+      extraConfig = {
+        credential.helper = "cache";
+        push.default = "simple";
+        diff.tool = "vimdiff";
+        merge.tool = "vimdiff";
+        core.excludesfile = toString (pkgs.writeText ".gitignore_global" ''
+          # Direnv stuff
+          .direnv
+          .envrc
+          # Editor files #
+          ################
+          *~
+          *.swp
+          *.swo
+        '');
+      };
+      lfs.enable = true;
+
+    };
 }