From 05d1c992ef4df545095421590ea1eefbfabeee8f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Thalheim?= <joerg@thalheim.io>
Date: Tue, 3 Dec 2024 12:12:36 +0100
Subject: [PATCH] fix minifakeroot on macos

---
 nixosModules/clanCore/zerotier/default.nix    | 32 ++++---------------
 pkgs/flake-module.nix                         |  1 +
 pkgs/minifakeroot/default.nix                 | 18 +++++++++++
 .../fake_root.c => pkgs/minifakeroot/main.c   |  4 +++
 4 files changed, 30 insertions(+), 25 deletions(-)
 create mode 100644 pkgs/minifakeroot/default.nix
 rename nixosModules/clanCore/zerotier/fake_root.c => pkgs/minifakeroot/main.c (94%)

diff --git a/nixosModules/clanCore/zerotier/default.nix b/nixosModules/clanCore/zerotier/default.nix
index 5fd8fcb08..f7e6cb29f 100644
--- a/nixosModules/clanCore/zerotier/default.nix
+++ b/nixosModules/clanCore/zerotier/default.nix
@@ -191,31 +191,13 @@ in
           config.services.zerotierone.package
           pkgs.python3
         ];
-        generator.script =
-          let
-            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 "$secrets/zerotier-identity-secret" \
-              --network-id "$facts/zerotier-network-id"
-          '';
+        generator.script = ''
+          source ${(pkgs.callPackage ../../../pkgs/minifakeroot { })}/share/minifakeroot/rc
+          python3 ${./generate.py} --mode network \
+            --ip "$facts/zerotier-ip" \
+            --identity-secret "$secrets/zerotier-identity-secret" \
+            --network-id "$facts/zerotier-network-id"
+        '';
       };
       clan.core.state.zerotier.folders = [ "/var/lib/zerotier-one" ];
 
diff --git a/pkgs/flake-module.nix b/pkgs/flake-module.nix
index 940cbbc19..93548a7e4 100644
--- a/pkgs/flake-module.nix
+++ b/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 { };
diff --git a/pkgs/minifakeroot/default.nix b/pkgs/minifakeroot/default.nix
new file mode 100644
index 000000000..1e63515cc
--- /dev/null
+++ b/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
+  '';
+}
diff --git a/nixosModules/clanCore/zerotier/fake_root.c b/pkgs/minifakeroot/main.c
similarity index 94%
rename from nixosModules/clanCore/zerotier/fake_root.c
rename to pkgs/minifakeroot/main.c
index d62bb9b05..e2b34defc 100644
--- a/nixosModules/clanCore/zerotier/fake_root.c
+++ b/pkgs/minifakeroot/main.c
@@ -1,4 +1,8 @@
 #include <stdint.h>
+#ifdef __APPLE__
+#include <unistd.h>
+#endif
+
 typedef uint32_t uid_t;
 
 #ifdef __APPLE__