sage: re-add pkg-config aliases

Those were removed because they were added to openblas itself. There was
an error with that however and it will take some time until the fix
makes its way through staging. For the time being, reverting this part
of 26d5d030fe will fix the sage build.
This commit should be reverted once
408eacbc89 is in master.

pkgs/applications/science/math/sage/default.nix

@@ -21,7 +21,7 @@ let
 
       sagelib = self.callPackage ./sagelib.nix {
         inherit flint ecl arb;
-        inherit sage-src pynac singular;
+        inherit sage-src openblas-blas-pc openblas-cblas-pc openblas-lapack-pc pynac singular;
         linbox = nixpkgs.linbox.override { withSage = true; };
       };
 
@@ -41,13 +41,13 @@ let
       };
 
       sage-env = self.callPackage ./sage-env.nix {
-        inherit sage-src python rWrapper ecl singular palp flint pynac pythonEnv;
+        inherit sage-src python rWrapper openblas-cblas-pc ecl singular palp flint pynac pythonEnv;
         pkg-config = nixpkgs.pkgconfig; # not to confuse with pythonPackages.pkgconfig
       };
 
       sage-with-env = self.callPackage ./sage-with-env.nix {
         inherit pythonEnv;
-        inherit sage-src pynac singular;
+        inherit sage-src openblas-blas-pc openblas-cblas-pc openblas-lapack-pc pynac singular;
         pkg-config = nixpkgs.pkgconfig; # not to confuse with pythonPackages.pkgconfig
         three = nodePackages_8_x.three;
       };
@@ -60,6 +60,10 @@ let
     };
   };
 
+  openblas-blas-pc = callPackage ./openblas-pc.nix { name = "blas"; };
+  openblas-cblas-pc = callPackage ./openblas-pc.nix { name = "cblas"; };
+  openblas-lapack-pc = callPackage ./openblas-pc.nix { name = "lapack"; };
+
   sage-src = callPackage ./sage-src.nix {};
 
   pythonRuntimeDeps = with python.pkgs; [

pkgs/applications/science/math/sage/openblas-pc.nix

@@ -0,0 +1,17 @@
+{ openblasCompat
+, writeTextFile
+, name
+}:
+
+writeTextFile {
+  name = "openblas-${name}-pc-${openblasCompat.version}";
+  destination = "/lib/pkgconfig/${name}.pc";
+  text = ''
+    Name: ${name}
+    Version: ${openblasCompat.version}
+
+    Description: ${name} for SageMath, provided by the OpenBLAS package.
+    Cflags: -I${openblasCompat}/include
+    Libs: -L${openblasCompat}/lib -lopenblas
+  '';
+}

pkgs/applications/science/math/sage/sage-env.nix

@@ -37,7 +37,7 @@
 , lcalc
 , rubiks
 , flintqs
-, openblasCompat
+, openblas-cblas-pc
 , flint
 , gmp
 , mpfr
@@ -98,9 +98,9 @@ writeTextFile rec {
     export PKG_CONFIG_PATH='${lib.concatStringsSep ":" (map (pkg: "${pkg}/lib/pkgconfig") [
         # This is only needed in the src/sage/misc/cython.py test and I'm not sure if there's really a use-case
         # for it outside of the tests. However since singular and openblas are runtime dependencies anyways
-        # it doesn't really hurt to include.
+        # and openblas-cblas-pc is tiny, it doesn't really hurt to include.
         singular
-        openblasCompat
+        openblas-cblas-pc
       ])
     }'
     export SAGE_ROOT='${sage-src}'

pkgs/applications/science/math/sage/sage-with-env.nix

@@ -4,6 +4,9 @@
 , sage-env
 , sage-src
 , openblasCompat
+, openblas-blas-pc
+, openblas-cblas-pc
+, openblas-lapack-pc
 , pkg-config
 , three
 , singular
@@ -29,6 +32,9 @@ let
     makeWrapper
     pkg-config
     openblasCompat # lots of segfaults with regular (64 bit) openblas
+    openblas-blas-pc
+    openblas-cblas-pc
+    openblas-lapack-pc
     singular
     three
     pynac

pkgs/applications/science/math/sage/sagelib.nix

@@ -3,6 +3,9 @@
 , buildPythonPackage
 , arb
 , openblasCompat
+, openblas-blas-pc
+, openblas-cblas-pc
+, openblas-lapack-pc
 , brial
 , cliquer
 , cypari2
@@ -56,7 +59,9 @@ buildPythonPackage rec {
   nativeBuildInputs = [
     iml
     perl
-    openblasCompat
+    openblas-blas-pc
+    openblas-cblas-pc
+    openblas-lapack-pc
     jupyter_core
   ];