diff --git a/pkgs/applications/version-management/mercurial/default.nix b/pkgs/applications/version-management/mercurial/default.nix
index df58b2162fc1..b5609b584866 100644
--- a/pkgs/applications/version-management/mercurial/default.nix
+++ b/pkgs/applications/version-management/mercurial/default.nix
@@ -1,12 +1,13 @@
 { lib, stdenv, fetchurl, fetchpatch, python3Packages, makeWrapper, gettext
 , re2Support ? true
 , rustSupport ? stdenv.hostPlatform.isLinux, rustPlatform
-, guiSupport ? false, tk ? null
+, gitSupport ? false
+, guiSupport ? false, tk
 , ApplicationServices
 }:
 
 let
-  inherit (python3Packages) docutils python fb-re2;
+  inherit (python3Packages) docutils python fb-re2 pygit2;
 
 in python3Packages.buildPythonApplication rec {
   pname = "mercurial";
@@ -42,7 +43,7 @@ in python3Packages.buildPythonApplication rec {
   } else null;
   cargoRoot = if rustSupport then "rust" else null;
 
-  propagatedBuildInputs = lib.optional re2Support fb-re2;
+  propagatedBuildInputs = lib.optional re2Support fb-re2 ++ lib.optional gitSupport pygit2;
   nativeBuildInputs = [ makeWrapper gettext ]
     ++ lib.optionals rustSupport (with rustPlatform; [
          cargoSetupHook
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index bb12c3c8df11..d6ec5a409cb3 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -25423,7 +25423,7 @@ in
     inherit (darwin.apple_sdk.frameworks) ApplicationServices;
   };
 
-  mercurialFull = appendToName "full" (pkgs.mercurial.override { guiSupport = true; });
+  mercurialFull = appendToName "full" (pkgs.mercurial.override { guiSupport = true; gitSupport = true; });
 
   merkaartor = libsForQt5.callPackage ../applications/misc/merkaartor { };