treewide: use blas and lapack

This makes packages use lapack and blas, which can wrap different
BLAS/LAPACK implementations.

treewide: cleanup from blas/lapack changes

A few issues in the original treewide:

- can’t assume blas64 is a bool
- unused commented code

pkgs/development/python-modules/prox-tv/default.nix

@@ -1,13 +1,11 @@
 { lib
 , blas
+, lapack
 , buildPythonPackage
 , cffi
 , fetchFromGitHub
-, liblapack
 , nose
 , numpy
-, openblas
-, useOpenblas ? true
 }:
 
 buildPythonPackage {
@@ -21,8 +19,6 @@ buildPythonPackage {
     sha256 = "0mlrjbb5rw78dgijkr3bspmsskk6jqs9y7xpsgs35i46dvb327q5";
   };
 
-  patches = lib.optional useOpenblas ./use-openblas.patch;
-
   checkInputs = [
     nose
   ];
@@ -32,12 +28,7 @@ buildPythonPackage {
     cffi
   ];
 
-  buildInputs = (
-    if useOpenblas then
-      [ openblas ]
-    else
-      [ blas liblapack ]
-  );
+  buildInputs = [ blas lapack ];
 
   enableParallelBuilding = true;
 

pkgs/development/python-modules/prox-tv/use-openblas.patch

@@ -1,11 +0,0 @@
-index f100b35..448bbaf 100644
---- a/prox_tv/prox_tv_build.py
-+++ b/prox_tv/prox_tv_build.py
-@@ -109,6 +109,6 @@ ffi.set_source(
-     define_macros=[('NOMATLAB', 1)],
-     extra_compile_args=extra_compile_args,
-     extra_link_args=extra_link_args,
--    libraries=['blas', 'lapack'],
-+    libraries=['openblas'],
-     include_dirs=['/usr/include']
- )