modules(home-manager): add git module

hosts/antoine-nixos/home-manager/home.nix

@@ -7,7 +7,6 @@
     # Reusable modules
     "${modules_hm_path}/alacritty.nix"
     "${modules_hm_path}/zsh.nix"
-    "${modules_hm_path}/git.nix"
     "${modules_hm_path}/ssh.nix"
     "${modules_hm_path}/go.nix"
     "${modules_hm_path}/utils.nix"
@@ -26,7 +25,7 @@
 
     # Host specific
     ./services.nix
-  ];
+  ] ++ (import ../../../modules/home-manager { });
 
   # Almost static information
   home = {
@@ -75,10 +74,16 @@
     ];
   };
 
+  # Custom modules (./modules/home-manager)
+  hm = {
+    git = {
+      enable = true;
+      signingKey = "A12925470298BFEE7EE092B3946E2D0C410C7B3D";
+    };
+  };
   programs = {
     home-manager.enable = true;
     cava.enable = true;
-    git.signing.key = "A12925470298BFEE7EE092B3946E2D0C410C7B3D";
 
     gpg = {
       enable = true;

modules/home-manager/default.nix

@@ -0,0 +1,4 @@
+{ ... }:
+[
+  ./git.nix
+]

modules/home-manager/git.nix

@@ -1,27 +1,61 @@
-{ ... }:
+{ config, lib, options, ... }:
+with lib;
+let
+  cfg = config.hm.git;
+
+  enable = mkEnableOption "git";
+  signingKey = mkOption {
+    type = types.nonEmptyStr;
+    description = "The GPG key to use for signing commits";
+    example = "A12925470298BFEE7EE092B3946E2D0C410C7B3D";
+  };
+  user = mkOption {
+    type = types.attrs;
+    description = "user information for git";
+    default = {
+      name = "DataHearth";
+      email = "dev@antoine-langlois.net";
+    };
+  };
+  extraConfig = mkOption {
+    type = types.attrs;
+    description = "Extra git configuration";
+    default = {};
+  };
+  extraAliases = mkOption {
+    type = types.attrs;
+    description = "Extra git aliases";
+    default = {};
+  };
+in
 {
-  programs.git = {
-    enable = true;
-    aliases = {
-      co = "checkout";
-      p = "push";
-      a = "add";
-      c = "commit";
-      s = "status";
-      pu = "pull";
-      logs = "log --graph --oneline";
-      remote-update = "remote update origin --prune";
-    };
-    difftastic.enable = true;
-    lfs.enable = true;
-    signing = {
-      signByDefault = true;
-    };
-    userEmail = "dev@antoine-langlois.net";
-    userName = "DataHearth";
-    extraConfig = {
-      init.defaultBranch = "main";
-      safe.directory = [ "/etc/nixos" ];
+  options.hm.git = {
+    inherit enable signingKey user extraConfig extraAliases;
+  };
+
+  config = mkIf cfg.enable {
+    programs.git = {
+      enable = true;
+      aliases = {
+        co = "checkout";
+        p = "push";
+        c = "commit";
+        s = "status";
+        pu = "pull";
+        logs = "log --graph --oneline";
+        remote-update = "remote update origin --prune";
+      } // cfg.extraAliases;
+      difftastic.enable = true;
+      lfs.enable = true;
+      signing = mkIf (builtins.hasAttr "signingKey" cfg) {
+        signByDefault = true;
+        key = cfg.signingKey;
+      };
+      userName = cfg.user.name;
+      userEmail = cfg.user.email;
+      extraConfig = {
+        init.defaultBranch = "main";
+      } // cfg.extraConfig;
     };
   };
 }