From c0e23159872e2e2135c7eb5cf96cd36cfe6ee1f4 Mon Sep 17 00:00:00 2001
From: Tomo <tomodachi94@protonmail.com>
Date: Fri, 25 Oct 2024 06:56:37 -0700
Subject: [PATCH] git-credential-oauth: add extraFlags option

This facilitates a legitimate use-case for browserless systems. From the
README:
> On systems without a web browser, set the -device flag to authenticate
> on another device using [OAuth device flow]:
> ```ini
  [credential]
	  helper = cache --timeout 7200	# two hours
	  helper = oauth -device
  ```

[OAuth device flow]: https://www.rfc-editor.org/rfc/rfc8628

Please note that, for the documentation about the man-page to be
accurate, https://github.com/NixOS/nixpkgs/pull/302922 must be merged.
---
 modules/programs/git-credential-oauth.nix | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/modules/programs/git-credential-oauth.nix b/modules/programs/git-credential-oauth.nix
index 4833e8068..1f4b99247 100644
--- a/modules/programs/git-credential-oauth.nix
+++ b/modules/programs/git-credential-oauth.nix
@@ -12,13 +12,26 @@ in {
       enable = lib.mkEnableOption "Git authentication handler for OAuth";
 
       package = lib.mkPackageOption pkgs "git-credential-oauth" { };
+
+      extraFlags = lib.mkOption {
+        type = lib.types.listOf lib.types.str;
+        default = [ ];
+        example = lib.literalExpression ''[ "-device" ]'';
+        description = ''
+          Extra command-line arguments passed to git-credential-oauth.
+
+          For valid arguments, see {manpage}`git-credential-oauth(1)`.
+        '';
+      };
     };
   };
 
   config = lib.mkIf cfg.enable {
     home.packages = [ cfg.package ];
 
-    programs.git.extraConfig.credential.helper =
-      [ "${cfg.package}/bin/git-credential-oauth" ];
+    programs.git.extraConfig.credential.helper = [
+      ("${cfg.package}/bin/git-credential-oauth" + lib.mkIf cfg.extraFlags
+        " ${lib.strings.concatStringsSep " " cfg.extraFlags}")
+    ];
   };
 }