fix minifakeroot on macos

nixosModules/clanCore/zerotier/default.nix

@@ -191,26 +191,8 @@ in
           config.services.zerotierone.package
           pkgs.python3
         ];
-        generator.script =
+        generator.script = ''
-          let
+          source ${(pkgs.callPackage ../../../pkgs/minifakeroot { })}/share/minifakeroot/rc
-            library = "libfakeroot${pkgs.stdenv.hostPlatform.extensions.sharedLibrary}";
-            minifakeroot = pkgs.stdenv.mkDerivation {
-              name = "minifakeroot";
-              dontUnpack = true;
-              installPhase = ''
-                mkdir -p $out/lib
-                ${
-                  if pkgs.stdenv.isDarwin then
-                    "$CC -dynamiclib -o $out/lib/libfakeroot.dylib ${./fake_root.c}"
-                  else
-                    "$CC -shared -o $out/lib/libfakeroot.so ${./fake_root.c}"
-                }
-              '';
-            };
-            varName = if pkgs.stdenv.isDarwin then "DYLD_INSERT_LIBRARIES" else "LD_PRELOAD";
-          in
-          ''
-            export ${varName}=${minifakeroot}/lib/${library}
           python3 ${./generate.py} --mode network \
             --ip "$facts/zerotier-ip" \
             --identity-secret "$secrets/zerotier-identity-secret" \

pkgs/flake-module.nix

@@ -28,6 +28,7 @@
         zt-tcp-relay = pkgs.callPackage ./zt-tcp-relay { };
         moonlight-sunshine-accept = pkgs.callPackage ./moonlight-sunshine-accept { };
         merge-after-ci = pkgs.callPackage ./merge-after-ci { inherit (config.packages) tea-create-pr; };
+        minifakeroot = pkgs.callPackage ./minifakeroot { };
         pending-reviews = pkgs.callPackage ./pending-reviews { };
         editor = pkgs.callPackage ./editor/clan-edit-codium.nix { };
         classgen = pkgs.callPackage ./classgen { };

pkgs/minifakeroot/default.nix

@@ -0,0 +1,18 @@
+{ stdenv }:
+let
+  varName = if stdenv.isDarwin then "DYLD_INSERT_LIBRARIES" else "LD_PRELOAD";
+  linkerFlags = if stdenv.isDarwin then "-dynamiclib" else "-shared";
+  sharedLibrary = stdenv.hostPlatform.extensions.sharedLibrary;
+in
+stdenv.mkDerivation {
+  name = "minifakeroot";
+  dontUnpack = true;
+  installPhase = ''
+    mkdir -p $out/lib
+    $CC ${linkerFlags} -o $out/lib/libfakeroot${sharedLibrary} ${./main.c}
+    mkdir -p $out/share/minifakeroot
+    cat > $out/share/minifakeroot/rc <<EOF
+    export ${varName}=$out/lib/libfakeroot${sharedLibrary}
+    EOF
+  '';
+}

pkgs/minifakeroot/main.c

@@ -1,4 +1,8 @@
 #include <stdint.h>
+#ifdef __APPLE__
+#include <unistd.h>
+#endif
+
 typedef uint32_t uid_t;
 
 #ifdef __APPLE__