Modularize code

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

users/common/configs/git/default.nix

@@ -1,23 +1,35 @@
-{ pkgs, ... }:
+{ config, lib, pkgs, ... }:
 
 {
-  programs.git = {
-    enable = true;
-    lfs.enable = true;
-    signing = {
-      signByDefault = true;
-      key = null;
-    };
-    extraConfig.credential.helper = "store";
-    hooks = {
-      commit-msg = pkgs.writeScript "git-commit-msg" ''
-        #!${pkgs.runtimeShell}
+  home-manager = {
+    sharedModules = [{
+      programs.git = {
+        enable = true;
+        lfs.enable = true;
+        signing = {
+          signByDefault = true;
+          key = null;
+        };
+        extraConfig.credential.helper = "store";
+        hooks = let
+          commit-msg-hook = pkgs.writeShellScriptBin "git-commit-msg" ''
+            git interpret-trailers --if-exists doNothing --trailer \
+              "Signed-off-by: $(git config user.name) <$(git config user.email)>" \
+              --in-place "$1"
+          '';
+        in
+        {
+          commit-msg = "${commit-msg-hook}/bin/git-commit-msg";
+        };
+      };
+    }];
 
-        git interpret-trailers --if-exists doNothing --trailer \
-          "Signed-off-by: $(git config user.name) <$(git config user.email)>" \
-          --in-place "$1"
-      '';
-    };
+    users = lib.attrsets.mapAttrs (user: config: ({
+      programs.git = {
+        userName = config.fullName;
+        userEmail = config.email;
+      };
+    })) (lib.attrsets.filterAttrs (name: config: config.isNormalUser) config.users.users);
   };
 }