uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

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

@@ -0,0 +1,76 @@
+{ lib, stdenv, fetchurl, cmake, gfortran, ninja, cudaPackages, libpthreadstubs, lapack, blas }:
+
+let
+  inherit (cudaPackages) cudatoolkit;
+in
+
+assert let majorIs = lib.versions.major cudatoolkit.version;
+       in majorIs == "9" || majorIs == "10" || majorIs == "11";
+
+let
+  version = "2.6.2";
+
+  # We define a specific set of CUDA compute capabilities here,
+  # because CUDA 11 does not support compute capability 3.0. Also,
+  # we use it to enable newer capabilities that are not enabled
+  # by magma by default. The list of supported architectures
+  # can be found in magma's top-level CMakeLists.txt.
+  cudaCapabilities = rec {
+    cuda9 = [
+      "Kepler"  # 3.0, 3.5
+      "Maxwell" # 5.0
+      "Pascal"  # 6.0
+      "Volta"   # 7.0
+    ];
+
+    cuda10 = [
+      "Turing"  # 7.5
+    ] ++ cuda9;
+
+    cuda11 = [
+      "sm_35"   # sm_30 is not supported by CUDA 11
+      "Maxwell" # 5.0
+      "Pascal"  # 6.0
+      "Volta"   # 7.0
+      "Turing"  # 7.5
+      "Ampere"  # 8.0
+    ];
+  };
+
+  capabilityString = lib.strings.concatStringsSep ","
+    cudaCapabilities."cuda${lib.versions.major cudatoolkit.version}";
+
+in stdenv.mkDerivation {
+  pname = "magma";
+  inherit version;
+  src = fetchurl {
+    url = "https://icl.cs.utk.edu/projectsfiles/magma/downloads/magma-${version}.tar.gz";
+    hash = "sha256-dbVU2rAJA+LRC5cskT5Q5/iMvGLzrkMrWghsfk7aCnE=";
+    name = "magma-${version}.tar.gz";
+  };
+
+  nativeBuildInputs = [ gfortran cmake ninja ];
+
+  buildInputs = [ cudatoolkit libpthreadstubs lapack blas ];
+
+  cmakeFlags = [ "-DGPU_TARGET=${capabilityString}" ];
+
+  doCheck = false;
+
+  preConfigure = ''
+    export CC=${cudatoolkit.cc}/bin/gcc CXX=${cudatoolkit.cc}/bin/g++
+  '';
+
+  enableParallelBuilding=true;
+  buildFlags = [ "magma" "magma_sparse" ];
+
+  meta = with lib; {
+    description = "Matrix Algebra on GPU and Multicore Architectures";
+    license = licenses.bsd3;
+    homepage = "http://icl.cs.utk.edu/magma/index.html";
+    platforms = platforms.unix;
+    maintainers = with maintainers; [ tbenst ];
+  };
+
+  passthru.cudatoolkit = cudatoolkit;
+}