diff --git a/pkgs/os-specific/darwin/apple-source-releases/CarbonHeaders/default.nix b/pkgs/os-specific/darwin/apple-source-releases/CarbonHeaders/default.nix
index 38215fa8f900..648770660d3d 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/CarbonHeaders/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/CarbonHeaders/default.nix
@@ -1,8 +1,6 @@
 { stdenv, appleDerivation }:
 
 appleDerivation {
-  phases = [ "unpackPhase" "installPhase" ];
-
   installPhase = ''
     mkdir -p $out/include
     cp MacTypes.h          $out/include
diff --git a/pkgs/os-specific/darwin/apple-source-releases/CommonCrypto/default.nix b/pkgs/os-specific/darwin/apple-source-releases/CommonCrypto/default.nix
index 5bcf94a18cef..ad51f1df2bcd 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/CommonCrypto/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/CommonCrypto/default.nix
@@ -1,8 +1,6 @@
 { stdenv, appleDerivation }:
 
 appleDerivation {
-  phases = [ "unpackPhase" "installPhase" ];
-
   installPhase = ''
     mkdir -p $out/include/CommonCrypto
     cp include/* $out/include/CommonCrypto
diff --git a/pkgs/os-specific/darwin/apple-source-releases/Libc/825_40_1.nix b/pkgs/os-specific/darwin/apple-source-releases/Libc/825_40_1.nix
index 0fa9294f2290..302a657992aa 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/Libc/825_40_1.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/Libc/825_40_1.nix
@@ -1,8 +1,6 @@
 { stdenv, appleDerivation, ed, unifdef }:
 
 appleDerivation {
-  phases = [ "unpackPhase" "installPhase" ];
-
   nativeBuildInputs = [ ed unifdef ];
 
   installPhase = ''
diff --git a/pkgs/os-specific/darwin/apple-source-releases/Libc/default.nix b/pkgs/os-specific/darwin/apple-source-releases/Libc/default.nix
index 40237b27bd26..d73dc8f3ec24 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/Libc/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/Libc/default.nix
@@ -1,8 +1,6 @@
 { stdenv, appleDerivation, ed, unifdef, Libc_old, Libc_10-9 }:
 
 appleDerivation {
-  phases = [ "unpackPhase" "installPhase" ];
-
   nativeBuildInputs = [ ed unifdef ];
 
   # TODO: asl.h actually comes from syslog project now
diff --git a/pkgs/os-specific/darwin/apple-source-releases/Libinfo/default.nix b/pkgs/os-specific/darwin/apple-source-releases/Libinfo/default.nix
index 2756857ba677..d3ffa1fa2834 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/Libinfo/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/Libinfo/default.nix
@@ -1,8 +1,6 @@
 { stdenv, appleDerivation }:
 
 appleDerivation {
-  phases = [ "unpackPhase" "installPhase" ];
-
   installPhase = ''
     substituteInPlace xcodescripts/install_files.sh \
       --replace "/usr/local/" "/" \
diff --git a/pkgs/os-specific/darwin/apple-source-releases/Libm/default.nix b/pkgs/os-specific/darwin/apple-source-releases/Libm/default.nix
index b409a7347ef2..1a01d0321918 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/Libm/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/Libm/default.nix
@@ -1,8 +1,6 @@
 { stdenv, appleDerivation }:
 
 appleDerivation {
-  phases = [ "unpackPhase" "installPhase" ];
-
   installPhase = ''
     mkdir -p $out/include
 
@@ -10,4 +8,4 @@ appleDerivation {
     cp Source/Intel/fenv.h $out/include
     cp Source/complex.h    $out/include
   '';
-}
\ No newline at end of file
+}
diff --git a/pkgs/os-specific/darwin/apple-source-releases/Libnotify/default.nix b/pkgs/os-specific/darwin/apple-source-releases/Libnotify/default.nix
index 810c8e8315a5..de691a056f3e 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/Libnotify/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/Libnotify/default.nix
@@ -1,8 +1,6 @@
 { stdenv, appleDerivation }:
 
 appleDerivation {
-  phases = [ "unpackPhase" "installPhase" ];
-
   installPhase = ''
     mkdir -p $out/include
     cp notify.h      $out/include
diff --git a/pkgs/os-specific/darwin/apple-source-releases/Librpcsvc/default.nix b/pkgs/os-specific/darwin/apple-source-releases/Librpcsvc/default.nix
index 512ec6253c78..7002f82fe561 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/Librpcsvc/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/Librpcsvc/default.nix
@@ -1,8 +1,6 @@
 { stdenv, appleDerivation, developer_cmds }:
 
 appleDerivation rec {
-  phases = [ "unpackPhase" "installPhase" ];
-
   buildInputs = [ developer_cmds ];
 
   installPhase = ''
diff --git a/pkgs/os-specific/darwin/apple-source-releases/Libsystem/default.nix b/pkgs/os-specific/darwin/apple-source-releases/Libsystem/default.nix
index 8575e0676253..9759810ef686 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/Libsystem/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/Libsystem/default.nix
@@ -3,9 +3,6 @@
   removefile, libresolv, Libnotify, libplatform, libpthread, mDNSResponder, launchd, libutil, version }:
 
 appleDerivation rec {
-  dontBuild = true;
-  dontConfigure = true;
-
   nativeBuildInputs = [ cpio ];
 
   outputs = [ "out" "dev" ];
diff --git a/pkgs/os-specific/darwin/apple-source-releases/architecture/default.nix b/pkgs/os-specific/darwin/apple-source-releases/architecture/default.nix
index edb7869269ac..2638a0afb76d 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/architecture/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/architecture/default.nix
@@ -1,9 +1,7 @@
 { stdenv, appleDerivation }:
 
 appleDerivation {
-  phases = [ "unpackPhase" "installPhase" ];
-
-  postUnpack = ''
+  postPatch = ''
     substituteInPlace $sourceRoot/Makefile \
       --replace "/usr/include" "/include" \
       --replace "/usr/bin/" "" \
diff --git a/pkgs/os-specific/darwin/apple-source-releases/copyfile/default.nix b/pkgs/os-specific/darwin/apple-source-releases/copyfile/default.nix
index c1a2acccaa97..bbc8c5e5e81d 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/copyfile/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/copyfile/default.nix
@@ -1,10 +1,8 @@
 { stdenv, appleDerivation }:
 
 appleDerivation {
-  phases = [ "unpackPhase" "installPhase" ];
-
   installPhase = ''
     mkdir -p $out/include/
     cp copyfile.h $out/include/
   '';
-}
\ No newline at end of file
+}
diff --git a/pkgs/os-specific/darwin/apple-source-releases/dyld/default.nix b/pkgs/os-specific/darwin/apple-source-releases/dyld/default.nix
index 56b0d93f99be..ddadf1f3940b 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/dyld/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/dyld/default.nix
@@ -1,8 +1,6 @@
 { stdenv, appleDerivation }:
 
 appleDerivation {
-  phases = [ "unpackPhase" "installPhase" ];
-
   installPhase = ''
     mkdir -p $out/lib $out/include
     ln -s /usr/lib/dyld $out/lib/dyld
diff --git a/pkgs/os-specific/darwin/apple-source-releases/eap8021x/default.nix b/pkgs/os-specific/darwin/apple-source-releases/eap8021x/default.nix
index af9493fe32e8..c8a40a20c9d3 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/eap8021x/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/eap8021x/default.nix
@@ -1,11 +1,9 @@
 { stdenv, appleDerivation }:
 
 appleDerivation {
-  phases = [ "unpackPhase" "installPhase" "fixupPhase" ];
-
   installPhase = ''
     mkdir -p $out/Library/Frameworks/EAP8021X.framework/Headers
 
     cp EAP8021X.fproj/EAPClientProperties.h $out/Library/Frameworks/EAP8021X.framework/Headers
   '';
-}
\ No newline at end of file
+}
diff --git a/pkgs/os-specific/darwin/apple-source-releases/launchd/default.nix b/pkgs/os-specific/darwin/apple-source-releases/launchd/default.nix
index c0e00ca1636e..86bc6e598f7d 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/launchd/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/launchd/default.nix
@@ -1,8 +1,6 @@
 { stdenv, appleDerivation }:
 
 appleDerivation {
-  phases = [ "unpackPhase" "installPhase" ];
-
   # No clue why the same file has two different names. Ask Apple!
   installPhase = ''
     mkdir -p $out/include/ $out/include/servers
@@ -11,4 +9,4 @@ appleDerivation {
     cp liblaunch/bootstrap.h $out/include/servers
     cp liblaunch/bootstrap.h $out/include/servers/bootstrap_defs.h
   '';
-}
\ No newline at end of file
+}
diff --git a/pkgs/os-specific/darwin/apple-source-releases/libclosure/default.nix b/pkgs/os-specific/darwin/apple-source-releases/libclosure/default.nix
index a0201f9db2c1..826dbed1dfe0 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/libclosure/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/libclosure/default.nix
@@ -1,10 +1,8 @@
 { stdenv, appleDerivation }:
 
 appleDerivation {
-  phases = [ "unpackPhase" "installPhase" ];
-
   installPhase = ''
     mkdir -p $out/include
     cp *.h $out/include/
   '';
-}
\ No newline at end of file
+}
diff --git a/pkgs/os-specific/darwin/apple-source-releases/libdispatch/default.nix b/pkgs/os-specific/darwin/apple-source-releases/libdispatch/default.nix
index c80e37575697..44c50e468384 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/libdispatch/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/libdispatch/default.nix
@@ -1,8 +1,6 @@
 { stdenv, appleDerivation }:
 
 appleDerivation {
-  phases = [ "unpackPhase" "installPhase" ];
-
   installPhase = ''
     mkdir -p $out/include/dispatch $out/include/os
 
diff --git a/pkgs/os-specific/darwin/apple-source-releases/libplatform/default.nix b/pkgs/os-specific/darwin/apple-source-releases/libplatform/default.nix
index 65accc870d71..41b1bf74af9e 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/libplatform/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/libplatform/default.nix
@@ -1,8 +1,6 @@
 { stdenv, appleDerivation }:
 
 appleDerivation {
-  phases = [ "unpackPhase" "installPhase" ];
-
   installPhase = ''
     mkdir $out
     cp -r include $out/include
diff --git a/pkgs/os-specific/darwin/apple-source-releases/libpthread/default.nix b/pkgs/os-specific/darwin/apple-source-releases/libpthread/default.nix
index b4d8004d3e66..650c6415defc 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/libpthread/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/libpthread/default.nix
@@ -1,8 +1,6 @@
 { stdenv, appleDerivation, libdispatch, xnu }:
 
 appleDerivation {
-  phases = [ "unpackPhase" "installPhase" "fixupPhase" ];
-
   propagatedBuildInputs = [ libdispatch xnu ];
 
   installPhase = ''
diff --git a/pkgs/os-specific/darwin/apple-source-releases/libresolv/default.nix b/pkgs/os-specific/darwin/apple-source-releases/libresolv/default.nix
index a565971a6fa4..5a2cd33d8a03 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/libresolv/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/libresolv/default.nix
@@ -1,8 +1,6 @@
 { stdenv, appleDerivation, Libinfo, configd, mDNSResponder }:
 
 appleDerivation {
-  phases = [ "unpackPhase" "buildPhase" "installPhase" ];
-
   buildInputs = [ Libinfo configd mDNSResponder ];
 
   buildPhase = ''
diff --git a/pkgs/os-specific/darwin/apple-source-releases/libutil/default.nix b/pkgs/os-specific/darwin/apple-source-releases/libutil/default.nix
index c943c2068e6d..a6f484ba4e8d 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/libutil/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/libutil/default.nix
@@ -2,8 +2,6 @@
 
 # all symbols are located in libSystem
 appleDerivation {
-  phases = [ "unpackPhase" "installPhase" ];
-
   installPhase = ''
     mkdir -p $out/include
     cp *.h $out/include
diff --git a/pkgs/os-specific/darwin/apple-source-releases/ppp/default.nix b/pkgs/os-specific/darwin/apple-source-releases/ppp/default.nix
index ffc19801c5dc..9ee8f2255b44 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/ppp/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/ppp/default.nix
@@ -1,8 +1,6 @@
 { stdenv, appleDerivation }:
 
 appleDerivation {
-  phases = [ "unpackPhase" "installPhase" "fixupPhase" ];
-
   installPhase = ''
     mkdir -p $out/include/ppp
 
diff --git a/pkgs/os-specific/darwin/apple-source-releases/removefile/default.nix b/pkgs/os-specific/darwin/apple-source-releases/removefile/default.nix
index 315f93bef084..8baf62dba01b 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/removefile/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/removefile/default.nix
@@ -1,10 +1,8 @@
 { stdenv, appleDerivation }:
 
 appleDerivation {
-  phases = [ "unpackPhase" "installPhase" ];
-
   installPhase = ''
     mkdir -p $out/include/
     cp removefile.h checkint.h $out/include/
   '';
-}
\ No newline at end of file
+}
diff --git a/pkgs/os-specific/darwin/xcode/default.nix b/pkgs/os-specific/darwin/xcode/default.nix
index d3a9ec012ebf..bea8bc5d3c21 100644
--- a/pkgs/os-specific/darwin/xcode/default.nix
+++ b/pkgs/os-specific/darwin/xcode/default.nix
@@ -14,7 +14,6 @@ in stdenv.mkDerivation rec {
     sha256 = "70bb550cc14eca80b9825f4ae9bfbf7f076bb75777311be428bc30a7eb7a6f7e";
   };
 
-  phases = [ "unpackPhase" "patchPhase" "installPhase" "fixupPhase" ];
   outputs = [ "out" "toolchain" ];