* Get rid of the `(import (__toPath ((toString

./JustNothing/.. )+"/"+args.version+".nix")))' hack, you can also just
  write `import (./path/to/pkg + "/${version}.nix)'.

svn path=/nixpkgs/trunk/; revision=9792

pkgs/applications/graphics/gocr/default.nix

@@ -1,2 +0,0 @@
-args : 
-(import (__toPath ((toString ./JustNothing/.. )+"/"+args.version+".nix"))) args

pkgs/applications/graphics/xscreensaver/default.nix

@@ -1,9 +0,0 @@
-let
-    realPath=y: (__toPath ((toString ./JustNothing/.. )+"/"+y.version+".nix"));
-    dispatch=(x: ((import (realPath x)) x)); 
-in
-args : 
-with args; 
-with builderDefs {src="";} null;  
-let eater=(lib.sumArgs dispatch args); in
-eater

pkgs/applications/window-managers/compiz-fusion/bcop/default.nix

@@ -1,2 +0,0 @@
-args : 
-(import (__toPath ((toString ./JustNothing/.. )+"/"+args.version+".nix"))) args

pkgs/applications/window-managers/compiz-fusion/ccsm/default.nix

@@ -1,2 +0,0 @@
-args : 
-(import (__toPath ((toString ./JustNothing/.. )+"/"+args.version+".nix"))) args

pkgs/applications/window-managers/compiz-fusion/compiz-manager/default.nix

@@ -1,2 +0,0 @@
-args : 
-(import (__toPath ((toString ./JustNothing/.. )+"/"+args.version+".nix"))) args

pkgs/applications/window-managers/compiz-fusion/compizconfig-python/default.nix

@@ -1,2 +0,0 @@
-args : 
-(import (__toPath ((toString ./JustNothing/.. )+"/"+args.version+".nix"))) args

pkgs/applications/window-managers/compiz-fusion/config-backend/default.nix

@@ -1,2 +0,0 @@
-args : 
-(import (__toPath ((toString ./JustNothing/.. )+"/"+args.version+".nix"))) args

pkgs/applications/window-managers/compiz-fusion/default.nix

@@ -1,13 +1,14 @@
 args : with args;
 rec
 {
-	bcop = import ./bcop args;
+        selectVersion = dir: import (dir + "/${args.version}.nix");
-	libcompizconfig = import ./libcompizconfig (args // {inherit bcop;});
+	bcop = selectVersion ./bcop args;
-	configBackendGConf = import ./config-backend (args // {inherit bcop libcompizconfig;});
+	libcompizconfig = selectVersion ./libcompizconfig (args // {inherit bcop;});
-	compizConfigPython = import ./compizconfig-python (args // {inherit libcompizconfig 
+	configBackendGConf = selectVersion ./config-backend (args // {inherit bcop libcompizconfig;});
+	compizConfigPython = selectVersion ./compizconfig-python (args // {inherit libcompizconfig 
 		bcop pyrex configBackendGConf;});
-	ccsm = import ./ccsm (args // {inherit libcompizconfig bcop compizConfigPython configBackendGConf;});
+	ccsm = selectVersion ./ccsm (args // {inherit libcompizconfig bcop compizConfigPython configBackendGConf;});
-	pluginsMain = import ./main (args //{inherit bcop ;});
+	pluginsMain = selectVersion ./main (args //{inherit bcop ;});
-	pluginsExtra = import ./extra (args //{inherit bcop pluginsMain;});
+	pluginsExtra = selectVersion ./extra (args //{inherit bcop pluginsMain;});
-	compizManager = import ./compiz-manager (args // {inherit bcop ccsm;});
+	compizManager = selectVersion ./compiz-manager (args // {inherit bcop ccsm;});
 }

pkgs/applications/window-managers/compiz-fusion/extra/default.nix

@@ -1,2 +0,0 @@
-args : 
-(import (__toPath ((toString ./JustNothing/.. )+"/"+args.version+".nix"))) args

pkgs/applications/window-managers/compiz-fusion/libcompizconfig/default.nix

@@ -1,2 +0,0 @@
-args : 
-(import (__toPath ((toString ./JustNothing/.. )+"/"+args.version+".nix"))) args

pkgs/applications/window-managers/compiz-fusion/main/default.nix

@@ -1,2 +0,0 @@
-args : 
-(import (__toPath ((toString ./JustNothing/.. )+"/"+args.version+".nix"))) args

pkgs/applications/window-managers/compiz/default.nix

@@ -1,2 +0,0 @@
-args : 
-(import (__toPath ((toString ./JustNothing/.. )+"/"+args.version+".nix"))) args

pkgs/applications/window-managers/fbpanel/default.nix

@@ -1,2 +0,0 @@
-args : 
-(import (__toPath ((toString ./JustNothing/.. )+"/"+args.version+".nix"))) args

pkgs/development/compilers/qi/default.nix

@@ -1,2 +0,0 @@
-args : 
-(import (__toPath ((toString ./JustNothing/.. )+"/"+args.version+".nix"))) args

pkgs/development/interpreters/pyrex/default.nix

@@ -1,2 +0,0 @@
-args : 
-(import (__toPath ((toString ./JustNothing/.. )+"/"+args.version+".nix"))) args

pkgs/development/tools/misc/indent/default.nix

@@ -1,9 +0,0 @@
-let
-    realPath=y: (__toPath ((toString ./JustNothing/.. )+"/"+y.version+".nix"));
-    dispatch=(x: ((import (realPath x)) x)); 
-in
-args : 
-with args; 
-with builderDefs {src="";} null;  
-let eater=(lib.sumArgs dispatch args); in
-eater

pkgs/development/tools/misc/intltool/default.nix

@@ -1,2 +0,0 @@
-args : 
-(import (__toPath ((toString ./JustNothing/.. )+"/"+args.version+".nix"))) args

pkgs/top-level/all-packages.nix

@@ -228,6 +228,12 @@ rec {
 		inherit stdenv lib;
 	};
 
+  # Call a specific version of a Nix expression, that is,
+  # `selectVersion ./foo {version = "0.1.2"; args...}' evaluates to
+  # `import ./foo/0.1.2.nix args'.
+  selectVersion = dir: args: import (dir + "/${args.version}.nix") args;
+        
+        
   ### STANDARD ENVIRONMENT
 
 
@@ -1222,16 +1228,14 @@ rec {
     inherit fetchurl stdenv zlib bzip2;
   };
 
-  pyrexFun = lib.sumArgs (import ../development/interpreters/pyrex) {
+  pyrexFun = lib.sumArgs (selectVersion ../development/interpreters/pyrex) {
-  	inherit fetchurl stdenv stringsWithDeps lib builderDefs;
+    inherit fetchurl stdenv stringsWithDeps lib builderDefs;
-	python = python_alts.v_2_5;
+    python = python_alts.v_2_5;
   };
 
-  pyrex = pyrexFun {
+  pyrex = pyrexFun {version = "0.9.6";} null;
-  	version = "0.9.6";
-  } null;
 
-  QiFun = lib.sumArgs (import ../development/compilers/qi) {
+  QiFun = lib.sumArgs (selectVersion ../development/compilers/qi) {
     inherit clisp stdenv fetchurl builderDefs unzip;
   };
 
@@ -1414,7 +1418,7 @@ rec {
     inherit fetchurl stdenv perl perlXMLSimple;
   };
 
-  indentFun = import ../development/tools/misc/indent {
+  indentFun = lib.sumArgs (selectVersion ../development/tools/misc/indent) {
     inherit fetchurl stdenv builderDefs;
   };
 
@@ -1904,9 +1908,9 @@ rec {
     inherit fetchurl stdenv x11 libjpeg libtiff libungif libpng bzip2;
   };
 
-  intltoolFun = lib.sumArgs (import ../development/tools/misc/intltool) {
+  intltoolFun = lib.sumArgs (selectVersion ../development/tools/misc/intltool) {
-  	inherit fetchurl stdenv lib builderDefs stringsWithDeps
+    inherit fetchurl stdenv lib builderDefs stringsWithDeps
-		perl perlXMLParser;
+      perl perlXMLParser;
   };
 
   intltool = intltoolFun {version = "0.36.2";} null;
@@ -3581,10 +3585,9 @@ rec {
       libXinerama libICE libSM libXrender xextproto;
     inherit (gnome) startupnotification libwnck GConf;
     inherit (gtkLibs) gtk;
-    inherit (gnome) libgnome libgnomeui metacity
+    inherit (gnome) libgnome libgnomeui metacity glib pango
-	      glib pango libglade libgtkhtml gtkhtml
+      libglade libgtkhtml gtkhtml libgnomecanvas libgnomeprint
-              libgnomecanvas libgnomeprint
+      libgnomeprintui gnomepanel;
-              libgnomeprintui gnomepanel;
     gnomegtk = gnome.gtk;
     inherit librsvg fuse;
   };
@@ -3593,17 +3596,17 @@ rec {
     version = "0.6.2";
   };
 
-  compizFun = lib.sumArgs (assert mesaSupported; import ../applications/window-managers/compiz) {
+  compizFun = lib.sumArgs (assert mesaSupported; selectVersion ../applications/window-managers/compiz) {
- 	inherit lib builderDefs stringsWithDeps;
+    inherit lib builderDefs stringsWithDeps;
     inherit fetchurl stdenv pkgconfig libpng mesa perl perlXMLParser libxslt;
     inherit (xorg) libXcomposite libXfixes libXdamage libXrandr
       libXinerama libICE libSM libXrender xextproto;
     inherit (gnome) startupnotification libwnck GConf;
     inherit (gtkLibs) gtk;
     inherit (gnome) libgnome libgnomeui metacity
-	      glib pango libglade libgtkhtml gtkhtml
+      glib pango libglade libgtkhtml gtkhtml
-              libgnomecanvas libgnomeprint
+      libgnomecanvas libgnomeprint
-              libgnomeprintui gnomepanel;
+      libgnomeprintui gnomepanel;
     gnomegtk = gnome.gtk;
     inherit librsvg fuse;
     inherit dbus dbus_glib;
@@ -3615,27 +3618,23 @@ rec {
   } null;
 
   compizFusion = assert mesaSupported; import ../applications/window-managers/compiz-fusion {
-
+    version = getConfig ["compizFusion" "version"] "0.6.0";
-  	version = getConfig ["compizFusion" "version"] "0.6.0" ;
+    inherit compiz;
-	inherit compiz;
+    inherit stringsWithDeps lib builderDefs;
-
-	inherit stringsWithDeps lib builderDefs;
-
     inherit fetchurl stdenv pkgconfig libpng mesa perl perlXMLParser libxslt;
     inherit (xorg) libXcomposite libXfixes libXdamage libXrandr
       libXinerama libICE libSM libXrender xextproto;
     inherit (gnome) startupnotification libwnck GConf;
     inherit (gtkLibs) gtk;
     inherit (gnome) libgnome libgnomeui metacity
-	      glib pango libglade libgtkhtml gtkhtml
+      glib pango libglade libgtkhtml gtkhtml
-              libgnomecanvas libgnomeprint
+      libgnomecanvas libgnomeprint
-              libgnomeprintui gnomepanel gnomedesktop;
+      libgnomeprintui gnomepanel gnomedesktop;
     gnomegtk = gnome.gtk;
     inherit librsvg fuse dbus dbus_glib git;
- 
+    inherit automake autoconf libtool intltool python pyrex gettext;
- 	inherit automake autoconf libtool intltool python pyrex gettext;
+    inherit pygtk pycairo getopt libjpeg glxinfo;
-	inherit pygtk pycairo getopt libjpeg glxinfo;
+    inherit (xorg) xvinfo xdpyinfo;
-	inherit (xorg) xvinfo xdpyinfo;
   };
   
   compizExtra = import ../applications/window-managers/compiz/extra.nix {
@@ -3727,7 +3726,7 @@ rec {
     xftSupport = true;
   };
 
-  fbpanelFun = lib.sumArgs (import ../applications/window-managers/fbpanel) {
+  fbpanelFun = lib.sumArgs (selectVersion ../applications/window-managers/fbpanel) {
     inherit fetchurl stdenv builderDefs pkgconfig libpng libjpeg libtiff librsvg;
     inherit (gtkLibs) gtk;
     inherit (xlibs) libX11 libXmu libXpm;
@@ -3829,13 +3828,11 @@ rec {
     inherit (xlibs) libX11 libXext libXi libXmu;
   };
 
-  gocrFun = lib.sumArgs (import ../applications/graphics/gocr) {
+  gocrFun = lib.sumArgs (selectVersion ../applications/graphics/gocr) {
-  	inherit builderDefs fetchurl stdenv;
+    inherit builderDefs fetchurl stdenv;
   };
 
-  gocr = gocrFun {
+  gocr = gocrFun {version = "0.44";} null;
-  	version	= "0.44";
-  } null;
 
   gphoto2 = import ../applications/misc/gphoto2 {
     inherit fetchurl stdenv pkgconfig libgphoto2 libexif popt readline gettext;
@@ -4340,17 +4337,17 @@ rec {
     base14Fonts = "${ghostscript}/share/ghostscript/fonts";
   };
 
-  xscreensaverFun = import ../applications/graphics/xscreensaver {
+  xscreensaverFun = lib.sumArgs (selectVersion ../applications/graphics/xscreensaver) {
     inherit stdenv fetchurl builderDefs lib pkgconfig bc perl intltool;
     inherit (xlibs) libX11 libXmu;
   };
 
   xscreensaver = xscreensaverFun {
-  	version = "5.04";
+    version = "5.04";
-	flags = ["GL" "gdkpixbuf" "DPMS" "gui" "jpeg"];
+    flags = ["GL" "gdkpixbuf" "DPMS" "gui" "jpeg"];
-	inherit mesa libxml2 libjpeg;
+    inherit mesa libxml2 libjpeg;
-	inherit (gtkLibs) gtk;
+    inherit (gtkLibs) gtk;
-	inherit (gnome) libglade;
+    inherit (gnome) libglade;
   } null;
 
   xterm = import ../applications/misc/xterm {

pkgs/top-level/version-stub.nix

@@ -1,9 +0,0 @@
-let
-    realPath=y: (__toPath ((toString ./JustNothing/.. )+"/"+y.version+".nix"));
-    dispatch=(x: ((import (realPath x)) x)); 
-in
-args : 
-with args; 
-with builderDefs {src="";} null;  
-let eater=(lib.sumArgs dispatch args); in
-eater