nix: expose shared home manager configuration via homeModules

nix/homeModules/git/default.nix

@@ -0,0 +1,64 @@
+{ lib, ... }:
+{
+  # git plugins
+  programs.git = {
+    lfs = {
+      enable = true;
+      skipSmudge = true;
+    };
+    delta = {
+      enable = true;
+      options = {
+        syntax-theme = "OneHalfLight";
+        features = "side-by-side";
+      };
+    };
+  };
+
+  # git itself
+  programs.git = {
+    enable = true;
+    extraConfig = {
+      init.defaultBranch = "mistress"; # haha gay haha
+      push.autoSetupRemote = true;
+      pull.ff = "only";
+      rerere.enabled = true;
+      safe.directory = "/etc/docker/compose";
+    };
+    ignores = [
+      "*~"
+      "*.swp"
+      ".DS_Store"
+      ".direnv/"
+      "**/result"
+      ".pre-commit-config.yaml"
+      ".config/nvim/spell/"
+      ".local/bin/"
+    ];
+  };
+
+  # identity
+  programs.git = {
+    userEmail = "leana.jiang+git@icloud.com";
+    userName = "Léana 江";
+    signing = {
+      key = "0x4E887A4CA9714ADA";
+      signByDefault = lib.mkDefault false;
+    };
+  };
+
+  programs.git.includes = [
+    # university identity
+    {
+      condition = "gitdir:~/univ-repos/";
+      contents = {
+        init.defaultBranch = "main";
+        user = {
+          name = "Léana CHIANG";
+          email = "leana.chiang@etudiant.univ-rennes1.fr";
+          signingKey = "0x32035DB97E777EEB";
+        };
+      };
+    }
+  ];
+}