returned to two-file structure for liblapack

pkgs/development/libraries/science/math/liblapack/default.nix

@@ -5,8 +5,7 @@
   cmake,
   python,
   atlas ? null,
-  shared ? false,
-  version ? "3.4.1"
+  shared ? false
 }:
 let
   atlasMaybeShared = if atlas != null then atlas.override { inherit shared; }
@@ -14,25 +13,14 @@ let
   usedLibExtension = if shared then ".so" else ".a";
   inherit (stdenv.lib) optional optionals concatStringsSep;
   inherit (builtins) hasAttr attrNames;
-  # Hashes of the versions of liblapack we know about.
-  versions2sha = {
-    "3.4.1" = "93b910f94f6091a2e71b59809c4db4a14655db527cfc5821ade2e8c8ab75380f";
-    "3.5.0" = "0lk3f97i9imqascnlf6wr5mjpyxqcdj73pgj97dj2mgvyg9z1n4s";
-  };
+  version = "3.4.1";
 in
 
-if !(builtins.hasAttr version versions2sha)
-then throw ''
-  Unknown liblapack version ${version}.
-  Available versions: ${concatStringsSep ", " (attrNames versions2sha)}
-''
-else
-
 stdenv.mkDerivation rec {
   name = "liblapack-${version}";
   src = fetchurl {
     url = "http://www.netlib.org/lapack/lapack-${version}.tgz";
-    sha256 = versions2sha."${version}";
+    sha256 = "93b910f94f6091a2e71b59809c4db4a14655db527cfc5821ade2e8c8ab75380f";
   };
 
   propagatedBuildInputs = [ atlasMaybeShared ];