cwiid: fix cross-compilation

* Remove hardcoded use of ar.
* Move flex and bison to nativeBuildInputs.
* Reformat for good measure.

pkgs/development/libraries/cwiid/default.nix

@@ -1,4 +1,13 @@
-{ lib, stdenv, fetchFromGitHub, autoreconfHook, bison, flex, bluez, pkg-config, gtk2 }:
+{ lib
+, stdenv
+, fetchFromGitHub
+, autoreconfHook
+, bison
+, flex
+, bluez
+, pkg-config
+, gtk2
+}:
 
 stdenv.mkDerivation rec {
   pname = "cwiid";
@@ -19,9 +28,21 @@ stdenv.mkDerivation rec {
     sed -i -e '/$(LDCONFIG)/d' common/include/lib.mak.in
   '';
 
-  buildInputs = [ bison flex bluez gtk2 ];
+  patches = [
+    ./fix-ar.diff
+  ];
 
-  nativeBuildInputs = [ autoreconfHook pkg-config ];
+  buildInputs = [
+    bluez
+    gtk2
+  ];
+
+  nativeBuildInputs = [
+    autoreconfHook
+    pkg-config
+    bison
+    flex
+  ];
 
   NIX_LDFLAGS = "-lbluetooth";
 

pkgs/development/libraries/cwiid/fix-ar.diff

@@ -0,0 +1,26 @@
+diff --git a/common/include/lib.mak.in b/common/include/lib.mak.in
+index 3afbb14..b8df9d9 100644
+--- a/common/include/lib.mak.in
++++ b/common/include/lib.mak.in
+@@ -22,7 +22,7 @@ static: $(STATIC_LIB)
+ shared: $(SHARED_LIB)
+ 
+ $(STATIC_LIB): $(OBJECTS)
+-	ar rcs $(STATIC_LIB) $(OBJECTS)
++	$(AR) rcs $(STATIC_LIB) $(OBJECTS)
+ 
+ $(SHARED_LIB): $(OBJECTS)
+ 	$(CC) -shared -Wl,-soname,$(SO_NAME) $(LDFLAGS) -o $(SHARED_LIB) \
+diff --git a/configure.ac b/configure.ac
+index 82ca3e1..0a78283 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -15,6 +15,8 @@ if test "$YACC" != "bison -y"; then
+ 	AC_MSG_ERROR([bison not found])
+ fi
+ 
++AC_CHECK_TOOL([AR], [ar], [:])
++
+ AC_ARG_WITH(
+ 	[python],
+ 	[AS_HELP_STRING([--without-python],[compile without python support])],