From 21f9e5aac26d1255f06469740ab96423c26614b6 Mon Sep 17 00:00:00 2001
From: midchildan <git@midchildan.org>
Date: Fri, 26 Mar 2021 01:40:28 +0900
Subject: [PATCH] tup: explain blocker for darwin build

---
 .../tools/build-managers/tup/default.nix        | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/pkgs/development/tools/build-managers/tup/default.nix b/pkgs/development/tools/build-managers/tup/default.nix
index f0e6efdca3e9..85bf919f778f 100644
--- a/pkgs/development/tools/build-managers/tup/default.nix
+++ b/pkgs/development/tools/build-managers/tup/default.nix
@@ -1,6 +1,8 @@
-{ lib, stdenv, fetchFromGitHub, fuse3, pkg-config, pcre }:
+{ lib, stdenv, fetchFromGitHub, fuse3, macfuse-stubs, pkg-config, pcre }:
 
-stdenv.mkDerivation rec {
+let
+  fuse = if stdenv.isDarwin then macfuse-stubs else fuse3;
+in stdenv.mkDerivation rec {
   pname = "tup";
   version = "0.7.10";
   outputs = [ "bin" "man" "out" ];
@@ -13,7 +15,7 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ pkg-config ];
-  buildInputs = [ fuse3 pcre ];
+  buildInputs = [ fuse pcre ];
 
   configurePhase = ''
     sed -i 's/`git describe`/v${version}/g' src/tup/link.sh
@@ -50,6 +52,13 @@ stdenv.mkDerivation rec {
     homepage = "http://gittup.org/tup/";
     license = licenses.gpl2;
     maintainers = with maintainers; [ ehmry ];
-    platforms = platforms.linux ++ platforms.darwin;
+    platforms = platforms.unix;
+
+    # TODO: Remove once nixpkgs uses newer SDKs that supports '*at' functions.
+    # Probably MacOS SDK 10.13 or later. Check the current version in
+    # ../../../../os-specific/darwin/apple-sdk/default.nix
+    #
+    # https://github.com/gittup/tup/commit/3697c74
+    broken = stdenv.isDarwin;
   };
 }