Merge pull request #11359 from FRidh/fftw

python FFTW bindings.

pkgs/development/libraries/fftw/default.nix

···
     ]
     ++ optional (precision != "double") "--enable-${precision}"
     # all x86_64 have sse2
-    ++ optional stdenv.isx86_64 "--enable-sse2"
+    # however, not all float sizes fit
+    ++ optional (stdenv.isx86_64 && (precision == "single" || precision == "double") )  "--enable-sse2"
     ++ optional stdenv.cc.isGNU "--enable-openmp";
 
   enableParallelBuilding = true;

pkgs/top-level/all-packages.nix

···
   fftw = callPackage ../development/libraries/fftw { };
   fftwSinglePrec = fftw.override { precision = "single"; };
   fftwFloat = fftwSinglePrec; # the configure option is just an alias
+  fftwLongDouble = fftw.override { precision = "long-double"; };
 
   filter-audio = callPackage ../development/libraries/filter-audio {};
 

pkgs/top-level/python-packages.nix

···
     };
   };
 
+  pyfftw = buildPythonPackage rec {
+    name = "pyfftw-${version}";
+    version = "0.9.2";
+
+    src = pkgs.fetchurl {
+      url = "https://pypi.python.org/packages/source/p/pyFFTW/pyFFTW-${version}.tar.gz";
+      sha256 = "f6bbb6afa93085409ab24885a1a3cdb8909f095a142f4d49e346f2bd1b789074";
+    };
+
+    buildInputs = [ pkgs.fftw pkgs.fftwFloat pkgs.fftwLongDouble];
+
+    propagatedBuildInputs = with self; [ numpy scipy ];
+
+    # Tests cannot import pyfftw. pyfftw works fine though.
+    doCheck = false;
+
+    preConfigure = ''
+      export LDFLAGS="-L${pkgs.fftw}/lib -L${pkgs.fftwFloat}/lib -L${pkgs.fftwLongDouble}/lib"
+      export CFLAGS="-I${pkgs.fftw}/include -I${pkgs.fftwFloat}/include -I${pkgs.fftwLongDouble}/include"
+    '';
+    #+ optionalString isDarwin ''
+    #  export DYLD_LIBRARY_PATH="${pkgs.fftw}/lib"
+    #'';
+
+    meta = {
+      description = "A pythonic wrapper around FFTW, the FFT library, presenting a unified interface for all the supported transforms";
+      homepage = http://hgomersall.github.com/pyFFTW/;
+      license = with licenses; [ bsd2 bsd3 ];
+      maintainer = with maintainers; [ fridh ];
+    };
+  };
+
   pyfiglet = buildPythonPackage rec {
     name = "pyfiglet-${version}";
     version = "0.7.2";