gitstatus: unvendor zlib

vendored zlib causes clang build to fail

pkgs/by-name/gi/gitstatus/package.nix

@@ -5,6 +5,7 @@
   fetchFromGitHub,
   git,
   zsh,
+  zlib,
   runtimeShell,
 }:
 stdenv.mkDerivation rec {
@@ -18,11 +19,18 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-b+9bwJ87VV6rbOPobkwMkDXGH34STjYPlt8wCRR5tEc=";
   };
 
-  env = lib.optionalAttrs stdenv.hostPlatform.isDarwin {
-    NIX_LDFLAGS = "-liconv";
-  };
+  env.NIX_LDFLAGS = toString (
+    [
+      # required by libgit2.a
+      "-lz"
+    ]
+    ++ lib.optional stdenv.hostPlatform.isDarwin "-liconv"
+  );
 
-  buildInputs = [ (callPackage ./romkatv_libgit2.nix { }) ];
+  buildInputs = [
+    zlib
+    (callPackage ./romkatv_libgit2.nix { })
+  ];
 
   postPatch = ''
     sed -i '1i GITSTATUS_AUTO_INSTALL=''${GITSTATUS_AUTO_INSTALL-0}' gitstatus.plugin.sh

pkgs/by-name/gi/gitstatus/romkatv_libgit2.nix

@@ -5,7 +5,6 @@ libgit2.overrideAttrs (oldAttrs: {
     "-DBUILD_CLAR=OFF"
     "-DBUILD_SHARED_LIBS=OFF"
     "-DREGEX_BACKEND=builtin"
-    "-DUSE_BUNDLED_ZLIB=ON"
     "-DUSE_GSSAPI=OFF"
     "-DUSE_HTTPS=OFF"
     "-DUSE_HTTP_PARSER=builtin" # overwritten from libgit2