feat(git): add git module, set user config

nix/homes/rafiq/git.nix

@@ -1,6 +1,5 @@
 {
   flake.homes.rafiq = {
-    # Testing the import in home-manager.nix
     home.shellAliases = {
       gs = "git status";
       gc = "git commit";

nix/manifest.nix

@@ -15,7 +15,7 @@ in
   flake.manifest = {
     users.rafiq = {
       primary = true;
-      username = "rafiq"; # If we don't set this here we have to do some weird shit
+      name = "Mohammad Rafiq";
       email = "rafiq@rrv.sh";
       shell = "fish";
       pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAILdsZyY3gu8IGB8MzMnLdh+ClDxQQ2RYG9rkeetIKq8n rafiq";

nix/modules/git.nix

@@ -0,0 +1,12 @@
+{
+  flake.modules.homeManager.default =
+    { manifest, config, ... }:
+    {
+      home.sessionVariables.GIT_CONFIG_GLOBAL = "$HOME/.config/git/config";
+      programs.git = {
+        userName = manifest.users.${config.home.username}.name;
+        userEmail = manifest.users.${config.home.username}.email;
+        signing.key = "~/.ssh/id_ed25519.pub";
+      };
+    };
+}

nix/modules/home-manager.nix

@@ -6,6 +6,7 @@ let
   globalCfg = {
     useGlobalPkgs = true;
     useUserPackages = true;
+    extraSpecialArgs = { inherit (cfg) manifest; };
     sharedModules = [
       (flattenAttrs (cfg.modules.homeManager or { }))
     ];

nix/modules/hosts.nix

@@ -18,6 +18,7 @@ let
         nixosSystem {
           specialArgs = {
             inherit inputs;
+            inherit (cfg) manifest;
             hostName = name;
           };
           modules = [