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Diffstat (limited to 'pkgs/os-specific/linux/psmouse-alps/default.nix')
-rw-r--r--pkgs/os-specific/linux/psmouse-alps/default.nix10
1 files changed, 6 insertions, 4 deletions
diff --git a/pkgs/os-specific/linux/psmouse-alps/default.nix b/pkgs/os-specific/linux/psmouse-alps/default.nix
index 834acd72ef20..65f1a5cf6c61 100644
--- a/pkgs/os-specific/linux/psmouse-alps/default.nix
+++ b/pkgs/os-specific/linux/psmouse-alps/default.nix
@@ -1,15 +1,17 @@
-{ stdenv, fetchurl, kernelDev, zlib }:
+{ stdenv, fetchurl, kernel, zlib }:
 
 /* Only useful for kernels 3.2 to 3.5.
    Fails to build in 3.8.
    3.9 upstream already includes a proper alps driver for this */
 
+assert builtins.compareVersions "3.8" kernel.version == 1;
+
 let
   ver = "1.3";
   bname = "psmouse-alps-${ver}";
 in
 stdenv.mkDerivation {
-  name = "psmouse-alps-${kernelDev.version}-${ver}";
+  name = "psmouse-alps-${kernel.version}-${ver}";
 
   src = fetchurl {
     url = http://www.dahetral.com/public-download/alps-psmouse-dlkm-for-3-2-and-3-5/at_download/file;
@@ -19,12 +21,12 @@ stdenv.mkDerivation {
 
   buildPhase = ''
     cd src/${bname}/src
-    make -C ${kernelDev}/lib/modules/${kernelDev.modDirVersion}/build \
+    make -C ${kernel.dev}/lib/modules/${kernel.modDirVersion}/build \
       SUBDIRS=`pwd` INSTALL_PATH=$out
   '';
 
   installPhase = ''
-    make -C ${kernelDev}/lib/modules/${kernelDev.modDirVersion}/build \
+    make -C ${kernel.dev}/lib/modules/${kernel.modDirVersion}/build \
       INSTALL_MOD_PATH=$out SUBDIRS=`pwd` modules_install
   '';