Add basic theme config

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

users/configs/git/commit-msg.sh

@@ -0,0 +1,3 @@
+git interpret-trailers --if-exists doNothing --trailer \
+  "Signed-off-by: $(git config user.name) <$(git config user.email)>" \
+  --in-place "$1"

users/configs/git/default.nix

@@ -2,7 +2,8 @@
 
 let
   hmConfig = config.home-manager.users."${user.name}";
-in {
+in
+{
   home-manager.users."${user.name}" = {
     programs.git = {
       enable = true;
@@ -14,14 +15,13 @@ in {
         key = null;
       };
       extraConfig.credential.helper = "store";
-      hooks = let
-        commit-msg-hook = pkgs.writeShellScriptBin "git-commit-msg" ''
-          ${pkgs.git}/bin/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";
+      hooks = {
+        commit-msg = let name = "git-commit-msg-hook"; in
+          "${pkgs.writeShellApplication {
+          inherit name;
+          runtimeInputs = with pkgs; [ git ];
+          text = builtins.readFile ./commit-msg.sh;
+        }}/bin/${name}";
       };
     };